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Home My WebLink AboutTrans 2016-05-16 Item 2B - Update - Residential Street Improvements / Walk and Roll Program Prioritization StudyCity of Tukwila Allan Ekberg, Mayor Public Works Department - Bob Giberson, Director INFORMATIONAL MEMORANDUM TO: Transportation Committee FROM: Bob Giberson, Public Works Director BY: Robin Tischmak, City Engineer CC: Allan Ekberg, Mayor DATE: May 13, 2016 SUBJECT: Residential Street Improvements /Walk & Roll Program Project Nos. 91510301 & 90710404 Residential Street Prioritization Study & Walk & Roll Plan Update ISSUE Update on the preliminary results of the Residential Street Prioritization Project. BACKGROUND In the 2015 -2016 budget, the Transportation Committee and City Council approved an updated method of prioritization for sidewalk and street improvements. Further, Council approved the sidewalk policy where the City invests at least $750,000 per year of general fund dollars into residential street improvements. In recent budget cycles, 42nd Avenue Phase III and 53rd Ave S were identified as top priorities and are under design this year with construction scheduled for 2017. The updated prioritization tool brings together past plans, such as the Walk and Roll Plan and the Safe Routes to School projects, as well as updates the formula based methods previously used by the City. The priority list is based on a formula that utilizes eight physical characteristics of each street segment and calculates a priority value. The algorithm prioritizes pedestrian safety over vehicular issues when calculating each priority value. Examples of pedestrian safety considerations include: pedestrian volumes, pavement width, shoulder width, and vehicle speeds. This residential street priority list is one tool that can help Council determine investments in additional sidewalk and street improvements in the upcoming budget cycle. Council may also want to review other factors beyond the Priority Value to ensure that broader issues, such as geographical equity, are addressed. Ultimately, while this list provides an initial guide for prioritization, Council will make the final decision on the order of investments and should approach this list as a tool to make future policy decisions, but not a sequential list. DISCUSSION A preliminary updated Residential Street Priority List has been prepared and is attached. This updated list includes the following information that staff has included for consideration: 1 Updated the criteria point data for all of our street segments 2. Included projects from the 2010 Walk and Roll Plan 3. Included our current CIP street list 4. Included current projects such as 42nd Ave S Phase III and 53rd Ave 5. Included current Safe Routes to School projects 6. Updated the original eight point criteria originally developed in the 1980s (see below) 7. Created an interactive map to show the updated priority values 9 Residential Street Prioritization Page 2 As mentioned above in #6, the eight point criteria in the updated priority array formula are: 1. Use type (UT) — value and importance increases if use includes schoolchildren, disabled, elderly or transit users 2. Use volume (UV) — equal to 1 for slight use up to 10 per day, 1.1 for occasional use up to 50 per day, or 1.2 for substantial use up to 100 per day 3. Use factor (UF) — sum of UT and UV 4. Vehicle volume (VOL) — equal to the average weekday daily traffic volume 5. Vehicle speed (SPD) — equal to 85th percentile vehicular speed if available (standard for reviewing posted speed limits), if not use posted speed 6. Shoulder width (SW) — average shoulder width for subject roadway segment (narrow shoulders are dangerous for pedestrians) 7. Roadway width (RW) - average roadway width for subject roadway segment 8. Segment length (L) — length of roadway segment The new Residential Street Priority List includes a column that indicates those street segments that are also included in the Walk & Roll Plan. The new tools are helpful to explain the cost and priority; the interactive map helps show the street segments and priority, and the individual project information sheets include cost estimates and a synopsis of the costs, constraints, and improvement options. The newly developed documentation and mapping will assist staff and Councilmembers in understanding the residential street prioritization process and to better respond to the public. The interactive mapping tool may be effectively included on the City's website. This is the first draft of the new priority list and tools, and we look forward to the Transportation Committee's review and input into this process, as well as thoughts as to how the City should roll out this plan to the broader community. RECOMMENDATION Committee consideration and direction on next steps. ATTACHMENTS Residential Street Prioritization List Top 10 Project Information Sheets W: \PW Eng \PROJECTS\A- RW & RS Projects \Residential streets prioritization study (91510301)\ Info Memo Res Streets 05 -13 -16 RRT gl.docx 10 Prioritization Array Line Street Name Start End Priority Value City Program Project Cost Comments 1 42nd Ave 5 5 154th St 5 160th St 49.03 Walk and Roll $1,590,000 Group cost shown 2 Macadam Rd 5 Interurban Ave 5 5 135 St 48.36 Walk and Roll $4,870,000 Group cost shown for 133rd to 144th only 3 5 142nd St 37th Ave S Tukwila Int'I Blvd 47.71 Walk and Roll $2,190,000 4 S 115th St E Marginal Way 5 42nd Ave 5 45.96 Walk and Roll $7,160,000 5 42nd Ave 5 40th Ave 5 S 139th St 42.22 Walk and Roll $5,130,000 Group cost shown 6 53rd Ave 5 S 144th St 5 137th St 42.11 Walk and Roll $10,370,000 Group cost shown 7 5 141st St 37th Ave 5 Tukwila Int'I Blvd 40.05 Residential Streets $1,480,000 8 34th Ave 5 5 135th St 5 130th St 39.96 Residential Streets $3,160,000 9 S 140th St Military Rd 5 Tukwila Int'I Blvd 38.47 Residential Streets $4,710,000 10 32nd Ave 5 S 135th St 5 130th St 37.72 Residential Streets $2,840,000 11 52nd Ave 5 5 137th St 53rd Ave 5 37.30 Walk and Roll $1,280,000 12 S 129th St Bridge 5 130th PI East City Limits 37.23 Walk and Roll - 13 46th Ave 5 5 148th St 5 150th St 35.96 Residential Streets $1,300,000 14 S 158th St 47th Ave 5 42nd Ave S 35.62 Residential Streets $3,580,000 15 5 135th St Military Rd S 32nd Ave 5 35.03 Walk and Roll $1,630,000 16 53rd Ave 5 52nd Ave 5 5 137th St 35.01 Walk and Roll $10,370,000 Group cost shown 17 5 133rd St Military Rd 5 33rd Ave 5 34.85 Residential Streets $3,070,000 18 5 148th St 42nd Ave 5 End of Road 34.03 Residential Streets $3,720,000 19 S 146th St Tukwila Int'I Blvd 46th Ave 5 33.81 Walk and Roll $7,480,000 Cost covers T.I.B. to 47th Ave S 20 S 152nd St Tukwila Int'I Blvd 42nd Ave 5 32.54 Walk and Roll $3,550,000 21 S 150th St Tukwila Int'I Blvd 42nd Ave 5 31.14 Walk and Roll $4,500,000 22 5 124th St 42nd Ave 5 51st PI5 29.86 Residential Streets $4,800,000 23 5 130th St 32nd Ave 5 Tukwila Int'I Blvd 28.98 Residential Streets $1,030,000 24 5 122nd St 42nd Ave 5 51st PI 5 27.39 Residential Streets $5,330,000 25 37th Ave S 5 126th St Tukwila Int'I Blvd 26.87 Residential Streets $3,450,000 26 35th Ave 5 S 125th St Tukwila Int'I Blvd 25.71 Residential Streets $2,950,000 27 5 148th St Tukwila Int'I Blvd 42nd Ave 5 25.57 Walk and Roll $6,140,000 Cost covers T.I.B. to 46th Ave S only 28 5 164th St 51st Ave 5 42nd Ave S 24.45 Residential Streets $6,350,000 29 46th Ave S 5 144th St S 148th St 24.30 Residential Streets $3,020,000 30 S 146th St 46th Ave 5 End of Road 24.05 Residential Streets $2,400,000 31 56th Ave 5 S 130th PI Interurban 23.84 Residential Streets $3,140,000 32 5 151st St 52nd Ave 5 51st Ave S 23.80 Residential Streets $700,000 33 5 160th St 53 Ave 5 51 Ave 5 23.58 Walk and Roll $3,590,000 Group cost shown, south side complete 34 37th Ave S 5 135th St Tukwila Int'I Blvd 23.41 Residential Streets $1,580,000 35 S 132nd St 33rd Ave 5 Tukwila Int'I Blvd 23.33 Residential Streets $2,100,000 36 35th Ave 5 5 135th St S 132nd St 23.22 Residential Streets $1,400,000 37 44th Ave 5 5 116th St 5 122nd St 22.58 Residential Streets $5,110,000 38 5 143rd St 35th Ave S 37th Ave 5 22.34 Residential Streets $210,000 39 47th Ave S N City Limits Ryan Way 5 21.74 Residential Streets $1,590,000 40 S 140th St 42nd Ave 5 End 21.16 Walk and Roll - 41 5 131st St 41st Ave 5 42nd Ave 5 20.86 Residential Streets $920,000 42 33rd Ave 5 5 132nd St 5 130th St 20.81 Residential Streets $2,290,000 43 5 139th St Tukwila Int'I Blvd 42nd Ave S 20.34 Residential Streets $1,190,000 44 Macadam Rd 5 5 147th St 5 150th St 20.18 Walk and Roll $15,610,000 Group cost shown 45 S 146th St Military Rd Tukwila Int'I Blvd 20.13 Residential Streets 52,510,000 46 5 128th St E Marginal Wy Macadam Rd 5 19.64 Residential Streets $1,780,000 47 5 126th St 34th Ave 5 35th Ave 5 19.02 Residential Streets 5580,000 48 34th Ave S 5 144th St 34th PI S 18.42 Residential Streets $1,060,000 49 5 139th St 42nd Ave 5 44th Ave 5 18.12 Residential Streets $1,150,000 50 54th Ave 5 Slade Wy 5 166th St 17.98 Residential Streets $2,260,000 Page 1 of 4 5/12/2016 Prioritization Array Line Street Name Start End Priority Value City Program Project Cost Comments 51 5 166th St W End Of Road 54 Ave 5 17.69 Residential Streets - 52 44th Ave 5 S 158th St 5 156th St 17.48 Residential Streets $1,010,000 53 44th Ave 5 S 137th St S 139th St 17.31 Residential Streets $1,160,000 54 Macadam Rd 5 S 138th St 48th Ave 5 16.93 Walk and Roll $4,870,000 Group cost shown for 133rd to 144th only 55 S 128th St 34th Ave 5 E Marginal Way 16.89 Residential Streets $1,950,000 56 5 140th St Tukwila Intl Blvd 42nd Ave 5 16.81 Walk and Roll $5,440,000 Cost covers T.I.B. to 46th Ave S only 57 40th Ave S N End of Road Interurban 16.56 Residential Streets - 58 45th Ave 5 5 137th St 5 140th St 16.29 Residential Streets $2,390,000 59 S 141st St Tukwila Intl Blvd 42nd Ave 5 15.86 Walk and Roll $1,800,000 60 51st Ave S S 138th St N End of Road 15.50 Residential Streets $1,220,000 61 48th Ave S 5 136th St End of Road 15.27 Residential Streets $1,400,000 62 46th Ave S 44th PI S 5 125th St 14.73 Residential Streets $4,260,000 63 51st Ave S 5 138th St S 140th St 14.17 Residential Streets - 64 40th Ave 5 S 126th St E Marginal Way 14.08 Residential Streets - 65 40th Ave 5 5 152nd St S 154th St 13.88 Residential Streets $980,000 66 56th Ave 5 S 139th St S 141st St 13.23 Residential Streets $1,780,000 67 35th Ave 5 5 142nd St 5 140th St 12.93 Residential Streets 51,980,000 68 33rd Ave S 34th Ave 5 S 140th St 12.87 Residential Streets $2,140,000 69 S 164th St E End of Road 51st Ave 5 12.67 Residential Streets $1,040,000 70 S 141st St 56th Ave 5 56th PI 5 12.41 Residential Streets $180,000 71 51st Ave 5 5 112th St S 114th St 12.22 Residential Streets - 72 44th Ave 5 S 122nd St 5 124th St 11.90 Residential Streets 51,610,000 73 5 141st St 33rd PIS 34th PIS 11.83 Residential Streets $350,000 74 5 139th St 51st Ave S E End of Road 11.57 Residential Streets 51,120,000 75 34th PI 5 34th Ave S 5 141st St 11.06 Residential Streets - 76 40th Ave S S 114th St S 115th St 10.72 Residential Streets - 77 48th PI S 48th Ave 5 5 136th St 10.72 Residential Streets - 78 57th Ave S 5 130th PI 5 133rd St 10.49 Residential Streets - 79 S 136th St End of Road 45th PI S 10.02 Residential Streets - 80 45th PIS S 136th St 5 137th St 9.84 Residential Streets - 81 44th PI 5 44th Ave 5 5 122nd St 9.78 Residential Streets - 82 S 158th St 40th PIS 42nd Ave S 9.62 Residential Streets - 83 47th Ave S S 156 St 5 End of Road 9.57 Residential Streets - 84 41st Ave 5 S 130th St S 131st St 9.56 Residential Streets - 85 5 137th St 53rd Ave 5 56th Ave S 9.49 Residential Streets - 86 S 138th St 51st ave 5 52nd Ave S 9.09 Residential Streets - 87 33rd PIS S 141st St 5 140th St 8.79 Residential Streets - 88 S 119th St 40th Ave 5 E End of Road 8.74 Residential Streets - 89 47th Ave S Ryan Way 5 5 109th St 8.50 Residential Streets - 90 53rd Ave S 5 170th St S End of Road 8.45 Residential Streets - 91 S 156th St 47th Ave 5 44th Ave S 7.69 Residential Streets - 92 52nd PIS End of Road 52nd Ave S 7.53 Walk and Roll - 93 5 109th St 47th Ave 5 48th Ave S 7.39 Residential Streets - 94 40th PIS N End of Road S 119th St 7.25 Residential Streets - 95 5 117th St 39th Ave S 40th Ave S 7.18 Residential Streets - North side of road complete 96 52nd PI 5 52nd Ave S S 137th St 7.02 Residential Streets - 97 S 112th St 51st Ave S W End of Road 6.87 Residential Streets - 98 45th Ave 5 5 163rd PI N End of Road 6.77 Residential Streets - 99 S 162nd St 48th Ave 5 End of Road 6.46 Residential Streets - 100 _ S 125th St 46 Ave S 50 PIS 6.40 Walk and Roll $2,960,000 Group cost shown Page 2 of 4 5/12/2016 Prioritization Array Line Street Name Start End Priority Value City Program Project Cost Comments 101 43rd Ave S 5 140th St 5 142nd St 6.15 Residential Streets - 102 S 163rd PI 45th Ave 5 46th Ave 5 5.88 Residential Streets - 103 50th Ave S End of Road 5 112th St 5.83 Residential Streets - 104 S 142nd St 42nd Ave 5 43rd Ave 5 5.55 Residential Streets - 105 S 134th PI 133rd St S 48th Ave 5 5.35 Residential Streets - 106 45th PIS S 163rd PI 5 End of Road 5.06 Residential Streets - 107 S 151st St Cul -de -Sac 42nd Ave 5 4.95 Residential Streets - 108 34th Ave S Military Road 5 144 St 4.80 Residential Streets - 109 S 142nd St 53rd Ave S W End of Road 4.68 Residential Streets 110 S 137th St Macadam Rd 44th Ave 5 4.52 Residential Streets - 111 5 128th St Military Road 30th Ave S 4.40 Residential Streets - 112 38th Ave S 5 130th St S End of Road 4,36 Residential Streets - 113 49th Ave 5 5 164th St N End of Road 4.19 Residential Streets - 114 S 139th St 56th PI 5 56th Ave S 3.90 Residential Streets - 115 34th Ave S 5 126th St 5 End of Road 3.71 Residential Streets - 116 41st Ave 5 Cul -de -Sac S 139th St 3.65 Residential Streets - 117 43rd Ave 5 S 160th St N End of Road 3.58 Residential Streets - 118 52nd Ave 5 5 142nd St 5 End of Road 3.52 Residential Streets - 119 S 133rd St 56th Ave 5 57th Ave S 3.49 Residential Streets - 120 5 133rd St 34th Ave S Tukwila Intl Blvd 3.46 Residential Streets - 121 S 111th St 49 Ave S E End Of Rd 3.27 Residential Streets - 122 38th Ave 5 Cul -de -Sac 5 150th St 3.23 Residential Streets - 123 5 113rd St 40th Ave 5 42nd Ave 5 3.14 Residential Streets - 124 S 114th St 40th Ave 5 41st Ave 5 3.04 Residential Streets - 125 46th Ave S S 160th St S 163rd PI 5 3.02 Residential Streets - 126 S 136th St Macadam Rd E End of Road 2.88 Residential Streets - 127 S 139th St 45th Ave 5 End 2.76 Residential Streets - 128 41st Ave S 5 113rd St 5 114th St 2.62 Residential Streets - 129 5 150th St 5 150th PI Macadam Rd 2.60 Residential Streets - 130 5 132nd St 37th Ave 5 W End of Road 2.47 Residential Streets - 131 52nd Ave S N End of Road 5 164th St 2.45 Residential Streets - 132 S 161 St Slst Ave 5 End of Road 2.44 Residential Streets - 133 Interurban PIS 40th Ave S E Marginal Way 5 2.37 Residential Streets - 134 S 168th St W City Limits End of Road 2.31 Residential Streets - 135 33rd PIS 5 130th 5t North End 2.17 Residential Streets - 136 5 126th St 40th Ave 5 41st Ave 5 2.01 Residential Streets - South side complete 137 48th Ave 5 5 122nd St S 124th St 1.95 Residential Streets - 138 S 113th St W End of Road 41st Ave 5 1.89 Residential Streets - 139 5 144th St End of Road 59th Ave 5 1.82 Residential Streets - 140 S 170th St 53rd Ave 5 City Limits 1.72 Residential Streets - 141 44th Ave 5 5 140th St End 1.40 Residential Streets - 142 42nd Ave S N End Of Rd S 115 St 1.36 Walk and Roll - 143 51st PIS 5 122nd St 5 End of Road 0.95 Residential Streets - 144 48th Ave S N End Of Rd S 109 St 0.74 Residential Streets - 145 S 113rd St W End of Road 51st Ave S 0.74 Residential Streets - 146 S 138th St Macadam Rd End 0.69 Residential Streets - 147 41st Ave 5 S 144th St North End 0.57 Residential Streets - 148 S 109th St W End Of Rd 51 Ave S 0.57 Residential Streets - 149 5 115th St 42 Ave S End Of Rd 0.44 Walk and Roll - 150 5 107th St W of Ryan Way E of Ryan Way 0.34 Residential Streets - Page 3 of 4 5/12/2016 Prioritization Array Line Street Name Start End Priority Value City Program Project Cost Comments 151 35th Ave 5 5 146th St End 0.00 Residential Streets - 152 40th Ave S E Marginal Wy 42nd Ave S 0.00 Walk and Roll $5,130,000 Group cost shown 153 43rd Ave 5 5 122nd St S 124th St 0.00 Residential Streets - 154 45th Ave 5 S 122nd St 5 124th St 0.00 Residential Streets - 155 47th Ave 5 5 122nd St 5 124th St 0.00 Residential Streets - 156 47th Ave 5 5 160th St 5 162nd St 0.00 Residential Streets - 157 49th Ave 5 5 122nd St 5 124th St 0.00 Residential Streets - 158 50th PIS S 124th St S 130th PI 0.00 Walk and Roll $2,960,000 Group cost shown 159 51st Ave S 5 144th St 5 151st St 0.00 Walk and Roll $5,010,000 Group cost shown 160 51st Ave S 5 151st St 5 154th St 0.00 Walk and Roll $5,010,000 Group cost shown 161 51st Ave 5 5 158th St N End of Road 0.00 Residential Streets - 162 51st Ave 5 5 160th St 5 166th St 0.00 Residential Streets - 163 53rd Ave S S 166 St 5 170 St 0.00 Residential Streets - 164 E Marginal Way 5 126 St 40 Ave 5 0.00 Walk and Roll - West side constructed 165 Macadam Rd 5 S 144th St 5 147th St 0.00 Walk and Roll $15,610,000 Group cost shown 166 Macadam Rd 5 42nd Ave S 48th Ave 5 0.00 Residential Streets - 167 Macadam Rd 5 5 144th St 5 138th St 0.00 Walk and Roll $4,870,000 Group cost shown for 133rd to 144th only 168 5 112th St Tukwila Intl Blvd E Marginal Way 0.00 Walk and Roll $1,800,000 169 5 116th St 42nd Ave 5 44th Ave 5 0.00 Residential Streets - 170 S 130th St Tukwila Intl Blvd Macadam Rd 5 0.00 Walk and Roll $9,280,000 171 5 148th St Military Road Tukwila Int'I Blvd 0.00 Residential Streets - Partial completion 172 5 150th St Military Road Tukwila Intl Blvd 0.00 Residential Streets - 173 5 153rd St 62nd Ave 5 65th Ave 5 0.00 Residential Streets - North side of road complete 174 5 159th St 53rd Ave 5 51st Ave S 0.00 Residential Streets - 175 5 163rd PI E End of Road 51st Ave S 0.00 Residential Streets - 176 Slade Way 5 160 St 54 Ave 5 0.00 Residential Streets - Page 4 of 4 5/12/2016 S 141St St from 37th Ave S to Tukwila International Blvd EXISTING CONDITIONS • Posted speed of 25 mph. • 2 Lanes (11' each); striping only present near intersection with Tukwila International Blvd. • Corridor length of 660'. • No designated bicycle facilities or sidewalks. • Street parking permitted along half of the south side of S 141St St. CONTEXT • Surrounding area land use a mix of single family, multi - family and commercial. • Transit routes serve Tukwila International Blvd. Sidewalks at Tukwila International Blvd & S 141" St, looking west CONSTRAINTS • Average ROW width* of 40'. • Overhead utilities on south side of S 141st St. • Existing Seattle City Light vault on south side of S 141St St near Tukwila International Blvd. • Retaining wall at edge of property on south side of S 14151 St. • Truck load /unload zone on north side of S 14151 St near Tukwila International Blvd. *ROW widths based on King County GIS data. OPPORTUNITIES • Improved pedestrian corridor to Tukwila International Blvd and associated transit routes. Retaining wall and large trees adjacent to S 141' St; looking east. IMPROVEMENT OPTIONS • Option 1: Reduce travelled lane widths to 10', add 5' sidewalks to both sides of the road, and maintain 7' wide street parking lanes where street parking currently exists. Underground overhead utilities and move street lights to the north side of S 141st St. • Option 2: Maintain existing roadway and add a 5 -6' sidewalk on the north side of the road. Underground overhead utilities. Source: Google Maps Typical existing section with parking on south side of S 141" St ;; looking east S 141' St from 37th Ave S to Tukwila International Blvd PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST Improvements to S 141st St between 37th Ave S and Tukwila International Blvd ENGINEERING $92,000 will improve access to public transportation. Multiple apartment buildings and businesses are located on S 141St St; adding a sidewalk would improve safety for RIGHT -OF -WAY $165,000 the residents along this corridor. CONSTRUCTION $611,000 This project involves adding sidewalks, restriping the existing roadway, undergrounding overhead utilities, relocating streetlights and modifying existing UTILITY UNDERGROUNDING $610,000 storm drainage facilities. Street parking is currently permitted for approximately 220' on south side of S 141st St; this configuration will be modified to accommodate a new sidewalk. TOTAL COST $1,478,000 These improvements can be made in the existing ROW; construction easements will be needed along both sides of this corridor. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. Typical improved cross section for Option 1, looking east (Preferred Option) 6) 34th Ave S from S 130th St to S 135th St EXISTING CONDITIONS • Posted speed of 25 mph. • No striping; roadway width varies from 20' to 32'. • Corridor length of 1,625'. • South of S 135th St, 34th Ave S has sidewalks, planter strips and street parking. • Barrier at corner of S 130th St & 34th Ave S; staircase down to Tukwila International Blvd behind barrier. CONTEXT • Surrounding area land use primarily single family. • 34th Ave S ends at a sharp turn onto S 130th St. • Staircase in public ROW, at corner of 34th Ave S & S 130th St, provides a shortcut to Tukwila International Blvd (TIB). Improvements to this staircase will not be part of this project. Existing improvements south of S 135E St; looking south. CONSTRAINTS • Average ROW width* of 60'. • Potential elevation conflicts at driveways. • Utility poles on both sides of 34th Ave S. • Between S 130th St and S 135th St the usable ROW width becomes restricted by existing fences and large trees. • Sharp, narrow corner at S 130th St. *ROW widths based on King County GIS data OPPORTUNITIES • Improved access to local schools and transit routes, • Opportunity to match already improved section south of S 135th St, which consists of 6' sidewalks, 7' parking lanes and 6' planters on both sides of 34th Ave S. Public staircase from 34" St Ave & S 130*T St to TIB; looking SE. IMPROVEMENT OPTIONS • Option 1: Improve pedestrian connectivity by extending existing improvements, south of S 135th St, to the remaining corridor length from S 130th St to S 135th St. Between S 132nd St and S 135th St, where the corridor is wider, improvements will be made to match those south of S 135th St. North of S 132nd St, where the corridor narrows, improvements will include striping and sidewalks. Overhead utilities will be undergrounded and street lights replaced. Vii. lairr� ► 135fSt t9� -A r P t. Cascade View` `1 - '"1 Elementarys.+& Sct ool f r t 3_ Source: Google Maps Typical existing cross section, representative of conditions between S 132' St and S 135Th St: looking north. 34th Ave S from S 130th St to S 135th St PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project description is broken into smaller segments based on usable ROW ENGINEERING $208,000 width as observed during analysis. South of S 135th St on 34th Ave S planters, parking and sidewalks. Between S 130th St and S 135th St there are no sidewalks RIGHT -OF -WAY $125,000 or planters; parking appears to be permitted on soft shoulders. Improvements will be made based on space availability to minimize community impact. CONSTRUCTION $1,384,000 Between S 132nd St and S 135th St, approximately 900', usable ROW is limited to UTILITY UNDERGROUNDING $1,440,000 50' wide due to large trees and existing fences. This corridor will be developed with two 10' wide drive lanes and 6' sidewalks on both sides. Due to space restrictions created by large trees and nearby structures, two 7' parking lanes TOTAL COST $3,157,000 and two 5 -6' planters will be added along 500' of this corridor. Between S 130th St and S 132nd St, approximately 660', usable ROW is limited to 35' wide due to existing fences, large trees, and significant landscaping. This corridor will be developed with two 10' wide travelled lanes and 5' sidewalks on both sides. Street parking will not be permitted on this segment of the corridor. These improvements can be made in the existing ROW; construction easements will be needed along approximately 500' on both sides of this corridor. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. Typical improved cross section for Option 1, representative of widest possible layout; looking north (Preferred Option) S 140th St from Military Road to Tukwila International Blvd EXISTING CONDITIONS • Posted speed of 25 mph. • 2 Lanes (11.5' each). • Corridor length of 2,360'. • No dedicated bike facilities or sidewalks. CONTEXT • Surrounding area land use primarily single family with multiple properties developed as apartments, a mortuary/cemetery and church. • Transit routes serve Military Rd S and Tukwila International Blvd • Local food bank located at corner of Military Rd S and S 140th St. Riverton Crest Cemetery plots near edge of S 140t" St; looking NW CONSTRAINTS • Average ROW* width of 20 -50'. • Overhead utilities on north side of S 140th St. • Utility cabinets near edge of roadway at corner of S 140th St and Tukwila International Blvd. • Decorative brick wall at corner of S 140th St and Tukwila International Blvd. • Existing roadway proximity to Riverton Crest Cemetery, where plots are located near the apparent property line, may restrict construction in that area. *ROW widths based on King County GIS data OPPORTUNITIES • Improved pedestrian corridor between Military Rd and Tukwila International Blvd and associated transit routes. • Improved access to a local food bank. • Create improved frontage area for cemetery; currently no curb or definitive separation between soft shoulder and occupied cemetery plots. Brick wall and utility cabinets at comer of S 140t" St and Tukwila International Blvd; looking SE. IMPROVEMENT OPTIONS • Option 1: Reduce overall pavement width to utilize space for two 5' sidewalks. Underground overhead utilities and update storm drainage facilities. Add approximately 400' of street parking on the north side and planters on both sides of S 140th St between 33rd PlaceSand37thAveS. Source. Google Maps itY 5' Sot Snott$de r Batik 12' Der.C*ta -r_ 12' 11' Safi S+rntriee eAriv Typical existing cross section, representative of section with 50' ROW width; looking west. (Preferred Option) S 140th St from Military Road to Tukwila International Blvd PROJECT DESCRIPTION This project involves modifying the existing roadway to accommodate 10, adding two 5' sidewalks, upgrading storm drainage facilities, undergrounding overhead utilities and replacing streetlights. Crosswalks and stop bars will be added at intersections where stops are currently required. The proposed improvements are broken into sections based on ROW width. King County GIS data indicates that the ROW varies between 20' and 50', with parcel lines overlapping the existing roadway. The proposed section and existing sections are illustrative of improvements at the widest part of the corridor. A parking lane will be added along approximately 400' of this corridor, where the ROW is 50' wide. The narrowest section of this corridor is approximately 720' long with an apparent ROW width of 20'; due to the location of the existing roadway and observed utilization it is assumed the GIS data is not accurate and a minimum section width of 30' will be proposed. These improvements can be made in the existing ROW; construction easements will be needed along both sides of this corridor. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. PLANNING LEVEL OPINION OF COST ENGINEERING $289,000 RIGHT -OF -WAY $320,000 CONSTRUCTION $1,922,000 UTILITY UNDERGROUNDING $2,170,000 TOTAL COST $4,701,000 Typical improved cross section for Option 1; looking west (Preferred Option) 32nd Ave S from S 135th St to S 130th St EXISTING CONDITIONS • Posted speed of 25 mph. • Corridor length of 1,400'. • No striping; roadway width varies from 18' to 25'. • No designated bike facilities. Segments of sidewalks along east side of corridor. CONTEXT • Surrounding area land use primarily single family • Cascade View Elementary School located south of S 135th St on 32nd Ave S. No sidewalks between S 130"' St and S 135th St; looking north. CONSTRAINTS • Between S 130th St and S 133rd St, average ROW width of 30'. • Between S 133rd St and S 135'h St, average ROW width of 60'. • Utility poles on east side of 32nd Ave S. • Large trees and Tukwila Department of Parks & Recreation property on narrow portion of 32nd Ave S. *ROW widths based on King County GIS data OPPORTUNITIES • Improved pedestrian corridor to Military Road and associated transit route. • Improved pedestrian route to Cascade View Elementary School. IMPROVEMENT OPTIONS • Option 1: Improve pedestrian corridor by extending existing improvements, south of S 135th St, to remaining section of 32nd Ave S between S 130th St and S 135th St. Where ROW is 60' wide, add 5 -6' sidewalks and 7' parking lanes to both sides of 32nd Ave S. Where ROW is 30' wide, add 5' sidewalks only. Underground overhead utilities and add storm drainage facilities. ROW Narrow to 30' Wide Source: Google Maps Improvements south of S 135th St; looking south. Typical existing section, representative of the section south of S 135"' St; looking north 32 "d Ave S from S 135th St to S 130th St PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST The existing section south of S 135th St includes planters, parking and sidewalks. ENGINEERING $156,000 The intent of this option is to match these existing improvements as space permits. According to King County GIS data, the ROW narrows from 60' wide to RIGHT -OF -WAY $350,000 30' wide between S 130th St and S 133rd St. Maintaining the existing centerline, improvements will be made as space allows to minimize community impact. CONSTRUCTION $1,037,000 Between S 130th St and S 133rd St the ROW is 30' wide for 400'. The remaining UTILITY UNDERGROUNDING $1,290,000 1,000' of this corridor usable width varies from 40 -60' due to existing fences, large trees and established structures near property lines. This segment will consist of two 10' drive lanes and two 5 -6' sidewalks. Street parking will be TOTAL COST $2,833,000 added along approximately 400' of this corridor. These improvements can be made in the existing ROW; construction easements will be required along both sides of 32nd Ave S. There may be impacts to existing landscaping and mailboxes; streetlights will need to be replaced during utility undergrounding. Typical improved cross section, representative of widest possible section for Option 1, looking north (Preferred Option) 46th Ave S from S 148th St to S 150t" St EXISTING CONDITIONS • Posted speed of 20 mph • No striping; roadway width varies from 12 -20'. • Corridor length of 650'. • 46th Ave S does not allow vehicle access between S 148th St and S 150th St; bollards located halfway between streets. • No sidewalks or designated bike facilities. • No street parking permitted. CONTEXT • Surrounding area land use predominantly single family residential. • Motorized vehicle access is restricted halfway between S 148th St and S 150th St; an 80' segment of 46th Ave S is blocked by bollards. Bollards located on 40' Ave S halfway between S 148'^ St 8 15rt St; looking south. CONSTRAINTS • Average ROW width* of 30'. • Utility poles on east side of 46th Ave S. • Steep slopes, retaining wall and large trees near edge of roadway. • Potential elevation issues where steep driveways meet roadway. • 46th Ave S is a dead -end, with bollards blocking vehicle access halfway between S 148th St and S 150th St. *ROW widths based on King County GIS data OPPORTUNITIES • Improved pedestrian, bicycle and vehicle access and safety along 46th Ave S. • Improved pedestrian and bicycle corridor to Thorndyke Elementary School. • In conjunction with improvements on 46th Ave S between S 144th St and S 148th St, this would create an improved corridor to multiple local amenities including the local public pool, King County Library, high school and middle school. 46'd Ave S is a narrow, one -lane corridor with no striping; looking north. IMPROVEMENT OPTIONS • Option 1: Maintain roadway width of 18' and add a sidewalk on the west side of 46th Ave S. Add short wall where steep slopes are near edge of roadway. • Option 2: Acquire ROW to accommodate two 10' drive lanes and two 5' sidewalks in addition to adding walls where steep slopes are near edge of roadway. Driveways will require extensive modifications to match a widened corridor. No Vehicle ? - Access Source: Google Maps • • 14 - Typical existing cross section, representative of north half of this corridor; looking south (Preferred Option) 46th Ave S from S 148th St to S 150th St PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves narrowing the existing roadway, adding storm drainage ENGINEERING $80,000 facilities, undergrounding overhead utilities, and adding a sidewalk on the west side of 46111 Ave S. A retaining wall will be added on the east side of 46th Ave S RIGHT -OF -WAY $82,000 near S 150th St to prevent destabilization of the steep slope at the edge of the roadway. CONSTRUCTION $531,000 Halfway between S 148th St and S 150th St, vehicle access is restricted with UTILITY UNDERGROUNDING $600,000 bollards blocking approximately 100' of the corridor. This area is narrow, paved corridor with dense vegetation encroaching on the walkway. Improvements to this area have not been assessed for this project. TOTAL COST $1,293,000 These improvements can be made in the existing ROW; construction easements will be needed along both sides of this corridor. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. Typical improved cross section for Option 1, looking south (Preferred Option) S 158th St from 47th Ave S to 42nd Ave S EXISTING CONDITIONS • Posted speed of 25 mph • No striping; average roadway width of 20 -22'. • Parallel and perpendicular parking utilized on gravel shoulders as space allows. • Corridor length of 1650'. • No designated bicycle facilities or sidewalks. CONTEXT • Surrounding area land use predominantly single family. • S 158th St is a dead -end street attached to a dead - end loop created by 44th Ave S, S 156th St and 47th Ave S. Angled intersection of S 158'" St & 44" Ave S with driveways on NW comer of intersection; looking NE. CONSTRAINTS • Average ROW width* of 60'. • Overhead utilities on south side of S 158th St. • Significant landscaping within ROW. • Diagonal intersection at S 158th St and 44th Ave S with driveway at NW corner of intersection. • s The St is a dead -end; construction on this corridor would impact not only this street, but the attached loop consisting of 44th Ave S, S 156th St, and 47th Ave S. *ROW widths based on King County GIS data OPPORTUNITIES • Improved safety for residents of S 158th St. • In conjunction with improvements on 42nd Ave S between Southcenter Blvd and S 158th St this would improve access to a major transit hub. S 1580^ St ends at 47"' Ave S; looking east. IMPROVEMENT OPTIONS • Option 1: Maintain two 11' drive lanes, add two 5° sidewalks, add 7' parking lane, underground overhead utilities and add storm drainage facilities. • Option 2: Maintain two 11' drive lanes, leave south side of S 158th St as existing while adding a 6' sidewalk and streetlights to the north side. Remove utility poles from south side during utility undergrounding. Source: Google Maps Typical existing cross section, looking west. S 158th St from 47th Ave S to 42nd Ave S PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves adding a parking lane on the south side of S 158th St, ENGINEERING $268,000 adding two 5' sidewalks, maintaining two 11' drive lanes, undergrounding overhead utilities and adding storm drainage facilities. RIGHT -OF -WAY $0 The existing roadway has an average pavement width of 22', with wide gravel CONSTRUCTION $1,786,000 shoulders along a majority of the corridor. Parallel and perpendicular parking were observed to be common practice in this neighborhood, indicating that street UTILITY UNDERGROUNDING $1,520,000 parking may be beneficial to the community. These improvements can be made in the existing ROW. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. TOTAL COST Typical improved cross section for Option 1, looking west (Preferred Option) $3,574,000 S 133rd St from Military Road S to 33rd Ave S EXISTING CONDITIONS • Posted speed of 25 mph • 2 Lanes (10.5' each) • Corridor length of 1350' • No designated bike facilities or sidewalks. 5' wide paved shoulder between Military Rd S & 32nd Ave S. • Narrow, asphalt walkway between 33rd Ave S & 32nd Ave S. • Drainage ditches along both sides of road, with culverts under driveways. CONTEXT • Surrounding area land use predominantly single family. • Transit routes serve Military Rd S. • Though parking is permitted on soft shoulder, it does not appear to be heavily utilized. • S 133rd St turns into S 132nd St before intersecting Tukwila International Blvd. S 133`h St and Military Rd S: looking SE. CONSTRAINTS • Average ROW width* of 45'. • Overhead utilities on south side of S 133rd St. • Drainage ditch on south side of S 133rd St. *ROW widths based on King County G1S data OPPORTUNITIES • Improved pedestrian and bicycle corridor to Military Rd S and associated transit routes. • In conjunction with improvements on S 133rd St between 33rd Ave S & Tukwila International Blvd, this would provide a pedestrian and bike corridor between Military Rd S & Tukwila International Blvd. Asphalt walkway and drainage ditch on south side of S 133"' St: looking NE. IMPROVEMENT OPTIONS • Option 1: Restripe lanes to 12' each and add 5 -6' sidewalk on both sides. Underground overhead utilities and replace streetlights. • Option 2: Widen existing roadway to accommodate 10' lanes, 5' bike lanes, and 6' sidewalks on both sides of S 133rd St. Underground overhead utilities and replace streetlights. Source: Google Maps Typical existing cross section, looking east S 133rd St from Military Road S to 33rd Ave S PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves widening S 133rd St in order to accommodate 12' shared ENGINEERING $230,000 lanes in both directions, undergrounding overhead utilities, modifying storm drainage facilities. The existing drainage facilities consist of ditches on both sides RIGHT -OF -WAY $68,000 of the road with culverts under driveways and side streets. With the addition of curbs and sidewalks, drainage conveyance will be required. Overhead utilities, CONSTRUCTION $1,530,000 primarily along the south side of S 133rd St, will be undergrounded and new streetlights installed. UTILITY UNDERGROUNDING $1,240,000 These improvements can be made in the existing ROW; construction easements will be needed along the south side of S 133rd St. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. TOTAL COST Typical improved cross section for Option 1, looking east (Preferred Option) $3,068,000 S 148th St from 42nd Ave S to East End of Road EXISTING CONDITIONS • Posted speed of 25 mph • No channelization; paved roadway width approx. 20' with gravel shoulder in some areas. • Corridor length of 1,860'. • No sidewalk or designated bike facilities. • Street parking permitted on gravel shoulder; does not appear heavily utilitized. CONTEXT • Surrounding area land use predominantly single family residential. • Transit routes serve 42nd Ave S. • S 148th St ends with no turn around area; gated driveway at east end of road. • ROW* continues through to 51st Ave S; land currently forested and undeveloped. • Recently developed properties on the south side of S 148th St, near the east end of the road, have been developed with planters and sidewalks. East end of S 1486 St, with gated driveway in public ROW. looking east. CONSTRAINTS • Average ROW width* of 40'. • Overhead utilities on south side of S 148th St. • Approximately 200' of corridor is crowded by dense vegetation and adjacent to overgrown ditches. • Large trees in location of proposed sidewalk near 42nd Ave S and S 148th St intersection. *ROW widths & info based on King County GIS data OPPORTUNITIES • Improved safety for residents along S 148th St. • Improved corridor to 42nd Ave S and associated transit routes. • In conjunction with improvements on S 148th St between 42nd Ave S and Tukwila International Blvd, this would provide an improved corridor to additional transit routes and local amenities. S 14 t St & 42"" Ave S, large tree at end of existing sidewalk; looking east. IMPROVEMENT OPTIONS • Option 1: Provide two 10' drive lanes, add two 5' sidewalks, underground overhead utilities and add storm drainage facilities. • Option 2: Add to existing improvements by adding a 5' sidewalk and 5' planter along the entire south side of S 148th St. Maintain existing roadway width. Underground overhead utilities and add storm drainage facilities. Existing grading of the road may require surface drainage facilities to be added to the north side of the road, while catch basins would be required along the south side. Source: Google Maps Typical existing section; looking west S 14811 St from 42nd Ave S to East End of Road PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves expanding on existing improvements by adding two 5' ENGINEERING $262,000 sidewalks, two 5' planters, undergrounding overhead utilities, upgrading storm drainage facilities and maintaining two 10' drive lanes. RIGHT -OF -WAY $0 Improvements to this corridor have been made adjacent to newly developed CONSTRUCTION $1,742,000 properties. The proposed improvements are intended to match these existing improvements where space is available. Space is restricted by dense vegetation UTILITY UNDERGROUNDING $1,710,000 and possible overgrown ditches near properties for approximately 200' of this corridor; this segment will not include planters. TOTAL COST $3,714,000 These improvements can be made in the existing ROW. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. Typical improved cross section for Option 1, looking west (Preferred Option) S 130th St from 32nd Ave S to Tukwila International Blvd EXISTING CONDITIONS • Posted speed of 25 mph. • No striping; average roadway width of 20'. • Corridor length of 580'; road length approximately 480', pedestrian path to Tukwila International Blvd approximately 100'. • No designated bicycle facilities or sidewalks. CONTEXT • Surrounding area land use predominantly single family. • Tukwila International Blvd does not intersect with S 130th St. There is a public staircase located at the east end of S 130th St. 32"' Ave S tums on to S 130th St; looking north. CONSTRAINTS • Average ROW width* of 60'; proposed section limited to 30' as a majority of driveways appear to be in ROW. • Overhead utilities on south side of S 130th St. • Drainage ditch on south side of S 130th St. *ROW widths based on King County GIS data OPPORTUNITIES • Improved pedestrian corridor to Tukwila International Blvd and associated transit routes. • Improved safety and accessibility for residents along S 130th St. Public staircase behind barrier at comer of S 130th St & 34th Ave S; looking east IMPROVEMENT OPTIONS • Option 1: Add sidewalk to both sides of S 130th St, underground overhead utilities, and improve existing stairway to Tukwila International Blvd. Source Google Maps 1 `1 ifl t> Ns l:rr. Typical existing section; looking east. S 130th St from 32nd Ave S to Tukwila International Blvd PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves adding sidewalks to the existing roadway, modifying storm ENGINEERING $77,000 drainage facilities, undergrounding overhead utilities, relocating streetlights and modifying the pedestrian stairway connecting S 130th St to Tukwila International RIGHT -OF -WAY $0 Blvd. Currently, the storm drainage facilities on this road include drainage ditches and catch basins; these will be modified as sidewalks and curbs are added. CONSTRUCTION $513,000 The existing staircase between S 130th St and Tukwila International Blvd ends in UTILITY UNDERGROUNDING $440,000 a parking lot adjacent to a vacant building. The parking lot is public ROW, but is currently striped with parking spots at the base of the staircase; creating a designated path through this parking lot should be considered in design. TOTAL COST $1,030,000 These improvements can be made in the existing ROW; construction easements will be needed along both sides of this corridor. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility undergrounding. Typical Cross section for Option 1, looking west (Preferred Option) S 124th St from 42nd Ave S to 51st Place S EXISTING CONDITIONS • Posted speed of 25 mph • 2 Lanes (12' each). • Corridor length of 2,410'. • Existing sidewalk length of 850' on south side of road. • Paved shoulder approx.8' wide along majority of corridor. CONTEXT • Surrounding area land use predominantly single family residential. • S 124th St is a truck route, heavily used by trucks entering and existing the BNSF Facility. • Access to the Green River Trail and Interurban Ave S south of S 124th St via the Allentown Bridge. • Extruded curb separates paved shoulder and drive lane on north side of S 124th St. BNSF Facility at S 124'b St & 51" Place S; looking east CONSTRAINTS • Average ROW width* of 55 -60'. • Overhead utilities on north side of S 124th St. • S 124th St is a major truck route with no alternative routes due to the location of the BNSF Railway facility. • Significant number of large trees along south side of S 124th St. *ROW widths based on King County GIS data OPPORTUNITIES • Improved bicycle and pedestrian corridor to the Tukwila Community Center. • Improved safety at angled intersection of S 124th St & 50th Place S. • In conjunction with improvements on 42nd Ave S across the Allentown Bridge this would provide an improved corridor to the Green River Trail, Interurban Ave S and local transit routes. Angled intersection of S 124'^ St & 50th Place S. IMPROVEMENT OPTIONS • Option 1: Restripe roadway to accommodate two 12' shared lanes and an 8' street parking lane on the south side of S 124th St. Add 6' sidewalks to both sides of the road. Match improvements with existing sidewalk currently bordering the Tukwila Community Center property. Bair ' t �r ,1 1- I- 1yAT.4 8 ve U Ittt.I _ ate • Source: Google Maps Typical existing section; looking west. S 124th St from 42nd Ave S to 51st Place S PROJECT DESCRIPTION PLANNING LEVEL OPINION OF COST This project involves restriping the existing roadway to accommodate two 12' shared lanes and street parking on the south side of S 124th St. The existing extruded curb along the north side of S 124th St will be removed. Sidewalks will be added to both sides of S 124th St. Overhead utilities will be undergrounded and streetlights replaced. Street parking and sidewalks adjacent to the Tukwila Community Center will remain, with the addition of striping along the existing parking lane. Storm drainage facilities will be modified to work with proposed curbs. These improvements can be made in the existing ROW. There may be impacts to existing landscaping and mailboxes. Streetlights will be replaced during utility underg rounding. ENGINEERING $337,000 RIGHT -OF -WAY $0 CONSTRUCTION $2,241,000 UTILITY UNDERGROUNDING $2,220,000 TOTAL COST Typical improved cross section for Option 1, looking west (Preferred Option) $4,798,000