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HomeMy WebLinkAboutCOW 2020-10-26 Item 3C - 30% Design of 42nd Avenue South Bridge Replacement Presentation42nd Avenue S Bridge Replacement – Design Consultant Contract COW Meeting 10/26/20 Allentown Bridge •Built in 1949 •Serves the Allentown Neighborhood •Poor Sufficiency Rating: 7.56 out of 100 •Weight restricted to 37 tons, truck speed reduced to 15 mph, and one truck at a time (council action February 2018) •10,300 Average Daily Traffic •Approx. 3,000 semi trucks per day use bridge •Serves South Seattle BNSF freight yard Bridge Deficiencies •Vertical and horizontal cracks in the concrete piers •Rocker bearings frozen in the extended position •Numerous areas of pack rust up to ¼ inch with steel section loss on approx. 30% of the structure •Pack rust is loosening the rivets and cause steel deflection •Multiple areas of bird guano accumulation in panel points Cracking at the Northwest Corner Typical pack rust on the bridge Corroded bearing frozen in the wrong positionAccumulation of bird guano Bridge Deficiencies •Pack Rust is distorting connections •Rust and Guano at Truss Bottom Chord •Diagonal cracks in the concrete abutments/wingwalls with exposed reinforcing steel (Rebar) •Piers that are suspect to scour/erosion •Impact damage to the top truss •Missing joint material allowing water and debris onto the floor beams Environmental Demographics •±1200 residents in Allentown, ±10% of those homes are mobile homes •41% of the population is foreign born •80 languages spoken in schools •Median income is lower than overall King County •Direct access to the Green River Trail and the Tukwila Community Center •Located with a ¾ mile to the Tukwila Park and Ride Previous Council Meetings/Actions •In December 2019, TIC directed City Staff to perform additional analysis to weigh options moving forward •In March 2020, Council authorized with a 7-0 vote to approve the in-depth inspection and $1M in design funding •Waste Management tax will be utilized for the $1M design funding City Staff Work Highlights •Request for Qualifications for design advertised in May 2020 •June 2020 design firms interviewed and firm was selected •In-depth inspection performed in July 2020 (delayed due to COVID 19 restrictions) •August 2020, Scope of Work (SOW) and costs estimates negotiated for 30% and 100% design •TIC and COW presented inspection findings in September 2020 •TIC presented 30% and 100% SOW and cost estimates on 9/21/2020 and 10/19/2020 What is included in 30% Design ? •Project Management •Site Survey •Preliminary Geotechnical Engineering •Environmental Permitting (preapplication) •Bridge Aesthetics & Landscape •Utility Engineering and Coordination •Constructability Review, Construction Schedule & Estimate •Traffic Control & Traffic Signal •Bridge Illumination •Community Outreach •Type, Size, and Location (TS&L) Report •30% Plans and Cost Estimate (P&E) Legislators and State Agencies Contacted City has meet with the following funding partners WSDOT Local Bridge Program (formally known as BRAC) -Kathleen Davis State grant programs, including Public Works Board Transportation Improvement Board -Ashley Probart, Executive Director, and Greg Armstrong Washington Freight Mobility Strategic Investment Board (FMSIB) Federal grant programs (BUILD grant) Transportation Improvement Board (TIB) BNSF (Johan Hellman ) –Intergovernmental Focus List of Legislative Staff contactedBeth Redfield, House Transportation StaffDanny Masterson, Senate Transportation staffDavid Bremer, House Democratic CaucusHannah McCarty, Senate Democratic CaucusDana Quam, House Republican Caucus Main themes –“More competitive when cities have a design”"Need to bring several partners to the table"“Better to show you have local commitment”“State is focused on maintenance and preservation” “Possible package in 2021 and more likely in 2022” David Foster, Tukwila State Lobbyist List of Legislators contacted 11th District -Sen Bob Hasegawa, Rep Zack Hudgins, Rep Steve Bergquist Rep Jake Fey, Chair House Transportation Committee Rep Javier Valdez, Vice Chair House Transportation Committee, Rep Sharon Wylie, Vice Chair House Transportation Committee Sen Curtis King, Ranking Member Senate Transportation Committee Sen Joe Nguyen, Senate Transportation Committee Rep Vandana Slatter, Vice Chair House Transportation Committee Rep Andrew Barkis, Ranking Member House Transportation Committee Sen Rebecca Saldana, Vice Chair Senate Transportation Committee Sen Mona Das, Senate Transportation Committee I N F O R M A T I O N H A N D O U T Council Direction •Council is being asked to approve the consultant agreement with TranTechEngineering, LLC. In the amount of $1,078,487 for 30% design P&E and Type, Size, and Location Report for the 42nd Ave South Bridge Replacement •Funding for this design is from the 2021 solid waste utility tax. •Consider this item at Nov 2 regular meeting consent agenda.