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Home My WebLink AboutTrans 2016-01-19 Item 2C - Discussion - 40-42 Avenue South (South 160th Street - South 131st Place) Phase III: 42nd Avenue South/South 160th Street Intersection Cost EstimateCity of Tukwila Allan Ekberg, Mayor TO: Mayor Ekberg Transportation Committee FROM: Bob Giberson, Public Works Director BY: Cyndy Knighton, Senior Program Manager DATE: January 15, 2016 SUBJECT: 40 -42 Ave South (S 160th — S 131 PI) Phase III Project No. 99410303, Contract No 12 -010 42nd Avenue S/S 160th Street Intersection Cost Estimate ISSUE Cost estimates to improve the intersection of 42nd Ave S and S 1601h St, as part of the 42nd Avenue S Phase III Project. I )_T41 &C %11P►1i7 On July 24, 2015, a Small Group Joint Meeting was held between the Tukwila Transportation Committee and elected officials from the City of SeaTac. The focus of that meeting was coordination between the two jurisdictions on common issues such as the Tukwila International Boulevard /Link Light Rail area, code enforcement, fire services, and other issues between the two cities. Tukwila and SeaTac agreed to look at the intersection of 42nd Ave S & S 160th St and study what could be done to improve the intersection safety, perhaps as part of Tukwila's 42nd Ave S Phase III Project, even though the actual intersection is under SeaTac's jurisdiction. Tukwila's design work on the project is currently at the 90% level and is scheduled to begin construction in 2016. SeaTac currently has no plans for improvements to the intersection or that portion of 42nd Ave S south of the Tukwila city limits. To study the potential improvements and develop planning -level cost estimates for the intersection, staff directed the design consultant team at CH2MHill to produce conceptual drawings and cost estimates. DISCUSSION Two options were developed by the CH2MHill design team. Option 1 is for full intersection improvements that would include repaving the entire intersection, improving the turning radius at the SE corner, installation of ADA compliant sidewalks, and associated stormwater improvements (see attachment for Option 1). For this exercise, the assumption was made that the PSE electrical pole relocation required is completed at no cost to the City. Actual costs for the PSE relocation would need to be determined based on any franchise agreement that SeaTac has with PSE. Option 2 would simply grind and overlay the entire intersection and sidewalks would only be installed on the north side of the intersection, which is under Tukwila's jurisdiction (see attachment for Option 2). FISCAL IMPACT Due to the very preliminary nature of the cost estimates listed below, a large contingency has been factored in to provide a buffer for budgeting considerations. The cost estimates for the two options include both design and construction costs, but do not include any analysis for potential right -of -way acquisition. A more detailed cost estimate is included as an attachment. Options Cost Estimate Option 1: Full Intersection with sidewalk improvements $102,807.82 Option 2: Grind and Overlay Only $19,318.00 RECOMMENDATION For information only. Attachments: Plan Drawings for Options 1 and 2 (2 pages) Planning level cost estimate breakdowns for Options 1 and 2 (2 pages) Meeting summary Small Group Joint Meeting 7/24/15 (2 pages) 11 WAPW Eng \PROJECTSIA• RW & RS Projects \42nd Ave S Phase 111 (99410303 94 -RS03) \Design \Info Memo 42nd Ave S -S 160th St Intersection Cost Estimate 1 -15 -16 gI sb.docx IR IR IRR IRR V IN IRU 1 1 IRI IRR 1 IRUN IP IN 1 IRR IRR IMO IRI INN INN IRI INN IRI 1 JRU IRI IMO UV u i-I , NrsD - Mitlatal ............. FULL DEPTH HMA PAVEMENT 40TH - 42ND AVENUE SOUTH - PHASE III S 160TH ST TSIDEWALK IMPROVEMENT OPTION 1 DATE: 01-08-16 PLANING BITUMINIOLIS PAVEMENT AND HMA OVERLAY 1 SCALE: 1" 20' 0 N FILL PLANING BITUMINIOUS PAVEMENT and HMA overlay 40TH - 42ND AVENUE SOUTH - PHASE III S 160TH ST MILL & OVERLAY OPTION 2 DATE: 01-08-16 CA) SCALE: 1" = 20' 40th - 42nd Ave South - Phase III S 160th St/42nd Ave S Intersection Option 1: Full Intersection with Sidewalk Improvements Cost Estimate Item No. Sec. No. Item Description Quantity Unit Unit Price Total Price SP/ST D 1 1-09 Mobilization (assume 8% total) 1 LS $ 3,900.00 3,900.00 STD 2 Traffic Control (assume 7% of total) not including Mobilization 1 LS $ 3,200.00 3,200.00 SP 3 2-01 Clearing and Grubbing 0.04 AC $ 15,000.00 533.82 STD 4 2-02 Remove Existing Drainage Structure 1 EA $ 350.00 350.00 SP 5 2-02 Pavement Sawcutting 112 LF 2.50 280.00 SP 6 2-03 Roadway Excavation Incl. Haul 167 CY 15.00 2,505.00 STD 7 2-03 Gravel Borrow Incl. Haul 19 CY 35.00 665.00 STD 8 4-04 Crushed Surfacing Top Course (or Base Course) 26 TON 25.00 650.00 STD 9 5-04 Planing Bituminious Pavement 43 SY 10.00 430.00 STD 10 5-04 HMA Cl. 1/2-inch PG 64-22 (Class B) 54 TON 92.00 4,968.00 STD 11 5-04 HMA Cl. 1-inch PG 64-22 (Class E) 8 TON 92.00 736.00 STD 12 7-04 Corrugated polyethlyene Storm Sewer Pipe 12 In. Diam. 133 LF 38.00 5,054.00 STD 13 7-04 Corrugated polyethlyene Storm Sewer Pipe 18 In. Diam, 13 LF 42.00 546.00 STD 14 7-05 Catch Basin Type 1 4 EA $ 1,200.00 4,800.00 STD 15 7-05 Connection to Drainage Structure 1 EA $ 700.00 700,00 STD 16 7-05 Abandon and Fill Pipe 50.00 LF 25.00 1,250.00 SP 17 8-02 Topsoil Type A 3 CY 50.00 150.00 SP 18 8-02 Seeded Lawn Installation 42 SY 10.00 420.00 STD 19 8-04 Cement Conc. Traffic Curb and Gutter 156 LF 20.00 3,120.00 STD 20 8-14 Cement Conc Sidewalk 40 SY 32.00 1,280.00 STD 21 8-14 Cement Conc Curb Ramp Type Parallel A 4 EA $ 1,500.00 6,000.00 STD 22 8-24 Modular Block Retaining Wall 373 SF 30.00 11,190.00 SP Subtotal $ 52,727.82 Contingency I I 50% 26,360.00 Subtotal $ 79,087.82 Design 15% $ 11,860.00 Construction management 15% 11,860.00 Total Option 1 $ 102,807.82 Assume PSE pole relocation will be at no cost to City. 01 11 2016 SEATAC S 160th St -cost.xisx 40th - 42nd Ave South - Phase III S 160th St/42nd Ave S Intersection Option 2: Mill and Overlay Only Cost Estimate Item No. 1 2 3 Sec. No. 1-09 5-04 Item Description Mobilization (assume 8% total) Traffic Control (assume 7% of total) not including Mobilization Planing Bituminious Pavement Quantity 1 1 410 Unit LS LS SY Unit Price $ 700.00 $ 600.00 10.00 Total Price 700.00 600.00 $ 4,100.00 SP/ST D STD SP STD 4 5-04 HMA Cl. 1/2-inch PG 64-22 (Class B) 49 TON 92.00 $ 4,508.00 STD Subtotal $ 9,908.00 Contingency I I 50% $ 4,950.00 01/11/2016 Subtotal $ 14,858.00 SEATAC S 160th St -cost.xlsx Design 15% $ 2,230.00 Construction management 15% $ 2,230.00 Total Option 2 $19,318.00 SEATAC S 160th St -cost.xlsx Small Group Joint Meeting Meeting Summary Small Group Joint Meeting Tukwila /SeaTac Location: SeaTac City Hall, McMicken Room Date: July 24, 2015 Begin Time: 9:00 a.m. End Time: 10:27 a.m. PRESENT From SeaTac: Mia Gregerson, Mayor; Tony Anderson and Pam Fernald, Councilmembers; Todd Cutts, City Manager; Joe Scorcio, Community and Economic Development Director From Tukwila: Joe Duffie, Dennis Robertson, Kathy Hougardy Councilmembers; David Cline, City Administrator; Laurel Humphrey, Council Analyst Welcome & Introductions The meeting began with a welcome from Mayor Gregerson and self- introductions of attendees. Tukwila International Boulevard Light Rail Station Area Update Mr. Scorcio provided an update on planning in the South 154th Street station area, including land assembly and infrastructure investment. The vision is for mixed -use, transit and pedestrian friendly redevelopment with localized retail and high density housing. The development community is aware of future opportunities in this area. Additionally, SeaTac is working with the State on cleanup of the Betty Brite property. SeaTac will receive 1.25 million in State capital funding for the International Marketplace project, which will be included in the development concept for the area. Development in this area will include improvements to the intersection at 152nd and TIB. In its assessment of this area, the Urban Land Institute recommended fee - based parking in support of light rail ridership and local business. He distributed copies of the Station Area Project Background and Urban Land Institute recommendations. Councilmember Robertson shared that current efforts toward the Tukwila International Boulevard Comprehensive Plan update are focusing on a vision of a walkable area with main street character. A consultant hired by the City advised that the market is not quite ready for new housing. Attendees discussed the importance of having a unified vision for this area, with common goals and elimination of service redundancies. Leadership and planners from both cities are in regular communication toward this effort. Councilmembers agreed that it would be useful to have shared talking points when lobbying for funding or describing the common vision, and are 11111 supportive of staff collaboration with regular updates to Councils. Mayor Gregerson would like this group to meet again on this topic with each group respectively reporting back to their Councils on the outcome. Code Compliance /Enforcement Update Mr. Scorcio provided an update on code enforcement strategies in the City of SeaTac. The program was adjusted during the last budget cycle and is currently undergoing review by a dedicated, cross - departmental working group. There will be more focus on proactive practices and community outreach than in the past. Their code was originally based on King County's code and has evolved over time to better meet their needs. Substantial code amendments are being developed now and expected to be reviewed by Council in September, Code Enforcement staff from both cities regularly meet to share best practices. SeaTac is considering a rental housing inspection program of their own. Councilmember Hougardy noted that Tukwila's Strategic Plan was instrumental in giving staff the guidance to put resources into strengthening code enforcement. Fire Services Update Mr. Cline provided an update on Tukwila's current examination of the possibility of annexing to the Kent Regional Fire Authority. There is a steering committee, a finance committee, and a governance committee evaluating various aspects, and the steering committee is on track to make a recommendation to Council by the end of the year. Depending on the outcome and Council approval there is possibility of a public vote in April 2016, concurrent with Kent RFA's next vote. He noted that regardless of the outcome, the close proximity of SeaTac's Station 47 and Tukwila's Station 54 present a valuable opportunity for partnership and he would like to continue that conversation. Other Mr. Cline noted the award of $1 billion in funding from the Legislature for the SR 509 extension project. The project will benefit the whole area and is worth celebrating. He also shared that Tukwila's Transportation Committee recently receive an update on the intersection at 42nd Avenue South and South 160th Street. Tukwila is in the design phase of a project that will construct ADA improvements in the northern corner. At that meeting Public Works staff shared that SeaTac has no plans regarding the southern corners of the intersection. He brought this to Mr. Cutts' attention and the two will have further discussions about possibilities for aligning improvements for a cohesive intersection. Mayor Gregerson thanked Tukwila for its participation in regional transportation planning efforts and noted the Sustainable Airport Master Plan currently being developed by the Port. Stakeholders in South King County are meeting regularly and cities should ensure their transportation plans are written to accommodate impacts from the projected future airport expansion. Councilmember Duffle noted that as 2016 Council President, he would like to have two Tukwila - SeaTac cooperative meetings, Meeting Summary by LH Joint Meeting: Tukwila/ SeaTac ................................................................................................... ............................... July 24, 2015 — Page 2 17