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HomeMy WebLinkAboutTIS 2021-04-12 Item 2A - Update - 2021 Overlay Program: 53rd Ave S Sidewalk Addition INFORMATIONAL MEMORANDUM Transportation and Infrastructure Services Committee TO: Hari Ponnekanti, Public Works Director FROM: Scott Bates, Project Manager BY: Mayor Allan Ekberg CC: April 9, 2021 DATE: 2021 Overlay Program- 53 Ave S Sidewalk Addition SUBJECT: rd Project No. 92110401 ISSUE Provide an update on the 53 Ave S traffic revision and sidewalk plan. rd BACKGROUND In 2020, the City desired to improve pedestrian safety on the 53 Ave S between S 137 St and 52 Ave S. The existing rdthnd roadway was not wide enough to safely accommodate two-way traffic and pedestrians. With limited funding, the City Street division was utilized to install a new at-grade pedestrian walkway on 53Ave S and revise the traffic direction to one-way rd northbound. At the same time, 52 Pl S was changed to one-way southbound. While pedestrian safety was greatly nd improved, the one-way street revision created substantial concerns with some residents. Staff was requested to look at options for improvement and report back to the Transportation & Infrastructure Services Committee. ANALYSIS Staff,along with consultant support from KPG, have been considering multiple options to improve the current conditions. With the funding restored to the 2021 Overlay Program, a raised sidewalk along 53 Ave S and S 137 St is scheduled to be rdth constructed in the Summer of 2021. Per the current design, the traffic on 52 Pl S would be returned to one-way northbound nd operation Ultimately, the best solution would be to resume two-way traffic on 53 Ave S. KPG is working on a low-cost solution for rd restoring two-way traffic in conjunction with the sidewalks, which would widen the roadway to the west. The need to coordinate with Seattle City Light for a pole relocation will likely prevent the work from being included this summer and will be dependent upon funding availability. Additional options for discussion: 1.Option A: Add the sidewalks, keep 53 Ave S as one-way northbound, return operation on 52 Pl S to northbound rdnd and construct in Summer 2021. Design the 53 Ave S widening for two-way traffic and construct as soon as funding rd is secured. Cost estimate is under development. 2.Option B: Add the sidewalks, keep 53 Ave S as one-way northbound, return operation on 52 Pl S to northbound rdnd and construct in summer 2021. No widening pursued. 3.Option C: Add the sidewalks, revise 53 Ave S as one-way southbound, revert the direction on 52 Pl S to rdnd northbound and construct in summer 2021. This option will cost more than #2 due to relocating the current signs. Additional traffic issues may appear despite traffic control efforts. FISCAL IMPACT Cost estimates still being developed. RECOMMENDATION Staff was requested to present this item for discussion to update the Council about the 53 Ave S sidewalk project progress. rd With recent and continued comments from the area residents, we now recommend pursuing option A, which will provide the best solution for the community. Attachment: Plan sheet design for 53 Ave S sidewalk rd 1 https://tukwilawa.sharepoint.com/sites/publicworks/engineering/PW Drop Box/01 TIC Agenda/2021 Agenda Items/TIC 04-12-21/a. 53rd Ave S Traffic Revisions Update/Info Memo 53rd Sidewalk Update 04092021.docx i N y 7a Eft 1 VaE SZ P jV n5 5204 12221-152 a 4-40 25 STA 15+15.00 MATCH LINE STA 20+20 SHEET 17 10+ 0 �/- MATCH EXISTING PAVING SEAM APPROX. STA 14+35.00 PLACE CURB & GUTTER AGAINST SAWCUT EDGE. S 137TH ST NUMBER START STA NORTHING EASTING LENGTH BRNG/DELTA RADIUS PI STA TAN Lt 10+00.00 178428.75 1285282.25 334.44' S 88'53'59° E W11-2, PEG CROSSING; W16 -7p, LEFT ARROW 30" X 30". 12" X 24" NEW, MOUNT ON E% UTILITY POLE L2 13+34.44 178422.33 1285616.62 190.56' N 76'01'54" E SiS 15+06.58 21.19LT SIGN SCHEDULE ® STATION OFFSET DESIGNATION SIZE REMARKS S12 14+64.78 27.36LT PC, 4=15' 30- X 30" REMOVE STOP SIGN, STREET SIGNS TO REMAIN S13 14+97.03 14.58RT W11-2, PEG CROSSING; W16 -7p, LEFT ARROW 30" X 30". 12" X 24" NEW, MOUNT ON E% UTILITY POLE 514 14+99.52 14.35RT W11-2, PEG CROSSING; W16 -7p, RIGHT ARROW 30" X 30", 12" X 24"ON NEW, MOUNT % UTILITYEPOLE SiS 15+06.58 21.19LT W11-2. PEG CROSSING; W16 -7p, RIGHT ARROW 3D" X 30", 12" X 24" NEW 516 15+07.57 21.31LT W11-2, PED CROSSING; W16 -7p, LEFT ARROW 30" X 30", 1Y X 24" NEW S24 13+49.74 27.80RT W4 -4P, CROSS TRAFFICINSTALL ODES NOT STOP 24" X 12" ON EXISTING POST ALL SIGNS- INSTALLED PER COT STD DETAIL RS -23A PLAN 0 10 20 40 60 SCALE IN FEET GRIND/ OVERLAY SECTION /77/7/ ///!f /7/7/77/7/7/7 EXISTING 2" GRIND AND 2" PAVEMENT HMA CL A° PG 58H-22 OVERLAY. S 137TH ST PAVEMENT SECTION NTS CEMENT CONCRETE CURB k GUTTER PER CDT STD DETAIL RS -04 CEMENT CONCRETE SIDEWALK PER COT 5T0 DETAIL RS -09, 4" DEPTH 2" CSTC S 137TH ST SAWCUT REFERENCE POINT 4' CSTC, IF REQUIRED TYPICAL CURB & GUTTER SECTION NTS PUBLIC WORKS DEPT_ *EN GIN EE RIN G 5STREETS *W ATTR*SE WE Re desimcd dreg checked be BEG MNE NM dare 02121 E2•21 01/21 Frolics proj dir field bkno SO 86 GENERAL NOTES 8.59RT STA 14+66.22 10 7.71' RT SITE SPECIFIC CONSTRUCTION NOTES 1. CONTRACTOR SHALL IDENTIFY AND MARK IN THE FIELD ALL OVERLAY, REPAIR AND RECONSTRUCTION LIMITS FOR CONTRACTING AGENCY APPROVAL PRIOR TO SAWCUTTING, PLANING, AND/OR EXCAVATION. 2. THE LOCATION OF THE ALIGNMENT IS FOR GENERAL LAYOUT PURPOSES ONLY. 3. INSTALL STORM DRAIN MARKER AT ALL GRATED CATCH BASIN LOCATIONS. SEE DETAIL, SHEETS 3. CONTRACTOR SHALL IDENTIFY. MEASURE. RECORD AND MARK IN THE FIELD EXISTING CHANNELIZATION AND/OR EXCAVATION IN ORDER TO INSTALL PROPOSED CHANNELIZAYON TO MATCH EXISTING LAYOUT. 5. THE LOCATION OF FEATURES SHOWN ON THESE PLANS IS APPROXIMATE AND NOT BASED ON TOPOGRAPHICAL SURVEY. CONTRACTOR SHALL FIELD VERIFY EXISTING CONDITIONS PRIOR TO CONSTRUCTION. CHANNELIZATION NOTES PAINTED DOUBLE YELLOW CENTER LINE PER WSDOT STD PLAN M-20.10-02. E2 PAINTED 4" WHITE EDGE LINE PER WSDOT STD PLAN M -20.10-D2. E3 INSTALL THERMOPLASTIC CROSSWALK PER COT STD DETAIL R5-20. 53RD AVE S SAWCUT REFERENCE POINT 2" HMA CL 18" PG 58H-22 OVERLAY SECTION. 4" HMA CL 5" PG58H-22 MPG Interdiscipli ary Design 3131 EIHtl AAe 2612.e... Flea s@e4.11 lien0'CII Colli ,Ale,, Ye 3tl21 250.IDM'I0 I2DE:21,16,0 .2011.14.4,1 90% REVIEW SUBMITTAL SAWCUT POINTS ® STATION OFFSET ELEV DESCRIPTION 5 30+27.10 2.47' RT 87.03 PC, 4=15' 6 30+10.70 15.15' RT 86.71 PT 7 13+69.22 10.17' RT 90.23 SAWCUT/GUTTER B 15+D&14 6.40' RT 86.76 SAWCUT/GUTTER O1 ROADWAY GRIND AND OVERLAY SECTION, SEE DETAIL, THIS SHEET. OINSTALL NEW CEMENT CONC. DRIVEWAY ENTRANCE PER COT STD DETAIL RS -O5. SEE PROFILES ON SHEET 18. O INSTALL NEW HMA DRIVEWAY. SEE SECTION, SHEET 2. O4 INSTALL CEMENT CDNC. SIDEWALK PER DETAIL, THIS SHEET O INSTALL CEMENT CONC. CURB AND GUTTER PER DETAIL, THIS SHEET. ©INSTALL PARALLEL CURB RAMP PER COT STD DETAIL RS -10 AND RAMP LAYOUT SHEET 6. SEE DETAIL, SHEET 19. O7 RELOCATE MAILBOXES PER COT STD DETAIL R5-36. © ADJUST FRANCHISE UTILITY STRUCTURE TO GRADE. O INSTALL HMA TRANSITION RAMP. SEE DETAIL, SHEET 2. 10 INSTALL CONC. INLET PER CDT STD DETAIL DS -09. STA/OFF IS SET AT CENTER OF STRUCTURE. 11 INSTALL 8" DI STORM PIPE. CONNECT NEW INLET TO EXISTING CATCH BASIN. MINIMUM PIPE SLOPE SHALL BE 1.07. 12 ADJUST EXISTING CATCH BASIN TD GRADE. INSTALL NEW FRAME AND SOLID COVER PER DS -05. ANIT SKID COATING SHALL BE APPLIED AFTER CONCRETE SIDEWALK IS PLACED. 14 REMOVE EXISTING PAVEMENT FROM STA 13+69 TO STA 15+15 ALONG SAWCUT LINE TO EXISTING SOUTH EDGE OF PAVEMENT. 2021 OVERLAY PROGRAM 53RD AVE S RE-ROUTE (SCHEDULE B) 53RD AVE S & S 137TH ST 16 20 file No roles OOPD.oa1G scale I' -a7 date 202141004 date 06/2020 i PLAN 0 10 20 40 60 SCALE IN FEET SIGN SCHEDULE OY STATION OFFSET DESIGNATION SIZE REMARKS 52 22+29.22 11.13LT R5-1. DO NOT ENTER 30° X 30" NEW 53 21+16.81 10.95LT W17-1, SPEED HUMP 30" X 30" NEW S4 21+17.68 11.02RT W17-1, SPEED HUMP 30" X 30" NEW S7 20+25.02 16.80LT R6-1, ONE WAY 36" X 12" NEW (2) S9 12+65.41 483.72LT D3, "TO SB 53RD (UP ARROW)" 24" X 24" NEW 525 11+74.33 246.46LT R1-1, STOP; R5-1, DO NDT ENTER 30" X 30°; 30" X 30" NEW S26 11+41.44 280.59Li D3, "TO SB 53RD (UP ARROW)" 24" X 24" NEW ALL SIGNS- INSTALLED PER COT STD DETAIL RS -23A 52ND PL S NUMBER START STA NORTHING EASTING LENGTH BRNG/DELTA RADIUS PI STA TAN L3 20+00.00 178424.77 1285489.75 153.84' N 7'47'55" W 3 32+75.85 5.54' RT L4 21+53.64 178577.19 128546587 56.44' N 1445'20" W PT L5 22+10.28 178631.76 1285454.50 51.21' N 2043'47" W L6 22+61.49 178679.66 1285436.37 28.51' N 35038" W GENERAL NOTES 1. CONTRACTOR SHALL IDENTIFY AND MARK IN THE FIELD ALL OVERLAY, REPAIR AND RECONSTRUCTION LIMITS FOR CONTRACTING AGENCY APPROVAL PRIOR TO SAWCUTTINC, PLANING, AND/OR EXCAVATION. 2. THE LOCATION OF THE ALIGNMENT IS FOR GENERAL LAYOUT PURPOSES ONLY. 3. INSTALL STORM DRAIN MARKER AT ALL GRATED CATCH BASIN LOCATIONS. SEE DETAIL, SHEETS 3. 4. CONTRACTOR SHALL IDENTIFY. MEASURE, RECORD AND MARK IN THE FIELD EXISTING CHANNELIZATION AND/OR EXCAVATION IN ORDER TO INSTALL PROPOSED CHANNELIZATION TO MATCH EXISTING LAYOUT. 5. THE LOCATION OF FEATURES SHOWN ON THESE PLANS IS APPROXIMATE AND NOT BASED ON TOPOGRAPHICAL SURVEY. CONTRACTOR SHALL FIELD VERIFY EXISTING CONDITIONS PRIOR TO CONSTRUCTION. CHANNELIZATION NOTES E2 PAINTED 4" WHITE EDGE LINE PER WSDOT SID PLAN 14-20.10-02. ❑4 INSTALL THERMOPLASTIC STOP BAR PER COT STD DETAIL RS -20. ❑5 IMNSTALL-24.40-02. THERMOPLASTIC TRAFFIC ARROW PER WSDOT STD PLAN ©INSTALL PRE -FABRICATED SPEED CUSHION PER DETAIL SHEET 26. CITY TO PROVIDE PREFABRICATED SPEED CUSHION FOR CONTRACTOR INSTALLATION. 111 NOTE USED 53ao1s4-___ MATCH EXISTIN VIN A 31�® 53RD AVE S 32+00 9GF 505 DWY 4 STA 32+45.36 6.29' RT 2 TDWY 2 STA 31+37.84 6.14' RI 53Ronves SAWCUT POINTS ® STATION OFFSET ELEV DESCRIPTION 1 32+64.44 9.21' RT 69.35 PC, R=10, MATCH EX 2 32+61.34 8.44' RT 69.80 PT 3 32+75.85 5.54' RT 70.51 PC, R=10' 4 32+64.94 2.82' RT 72.02 PT 0 10 20 40 60 SCALE IN FEET PUBLIC WORKS DEPT_ .EN GINEERING *STREETS *W ATTR*SEINER* deal anal drJe, dreaded by BMC MNE NM dare 02121 02'21 02/21 prop e114 proj dir field IP, no 53RD AVE S NUMBER START STA NORTHING EASTING LENGTH BRNG/DELTA RADIUS PI STA TAN L7 30+00.00 178459.08 1285764.37 490.00' N 22'48'11" W MPG Interdisapli ary Design 3131 EI16666e 2562.066 66666 6ui'.e 610 Ie66me,'d'42WOt .61116,1663tl 21 253,621,21 I26E; 2961N0 .551.14.5,n 90% REVIEW SUBMITTAL SITE SPECIFIC CONSTRUCTION NOTES O ROADWAY GRIND AND OVERLAY SECTION, SEE DETAIL, THIS SHEET. OINSTALL NEW CEMENT CONC. DRIVEWAY ENTRANCE PER CDT STD DETAIL RS -05. SEE PROFILES ON SHEET 18. 03 INSTALL NEW HMA DRIVEWAY. SEE SECTION, SHEET 2. O INSTALL CEMENT CONC. SIDEWALK PER DETAIL PREVIOUS SHEET O INSTALL CEMENT CONC. CURB AND GUTTER PER DETAIL PREVIOUS SH. 13 INSTALL CEMENT CONC. DRIVEWAY. SEE SECTION, SHEET 2 2021 OVERLAY PROGRAM 53RD AVE S RE-ROUTE (SCHEDULE B) 53RD AVE S &S 137TH ST date 6561510116 20 file to 20139 53160.111G Kale = date 06/2020 4