TIC 2018-10-08 Item 2C - Final Acceptance - Interurban Avenue South (South 143rd Street to Fort Dent Way) with Walsh Construction Company

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City of Tukwila Public Works Department - Henry Hash, Director INFORMATIONAL MEMORANDUM TO: Transportation and Infrastructure Committee FROM: Henry Hash, Public Works Director ,- BY: Michael Ronda, Construction Project Manager CC: Mayor Ekberg DATE: October 5, 2018 SUBJECT: Interurban Ave S (S 143rd St to Fort Dent Way) Project No. 90310402, Contract No. 14-067 Contract Completion and Acceptance Allan Ekberg, Mayor ISSUE Accept construction contract as complete and authorize release of the payment and performance bond. BACKGROUND The Notice to Proceed for Contract Number 14-067 with Walsh Construction Co. LLC was issued on July 21, 2014. This construction project was the final phase of improvements to the Interurban Ave S corridor between 42nd Ave S and 1-405. The improvements provided new roadway features, including a retaining wall system at the river bend near Fort Dent, and a new storm drainage system, including a large underground detention vault. DISCUSSION The construction project was physically completed on June 16, 2016 however the project was followed by several months of dispute negotiations before a final settlement was reached. The settlement agreement included a final payment of $1,425,000 and a time extension of 141.5 calendar days which was approved by Council in December 4, 2017. Since then staff has been waiting for all administrative obligations and payment verification items to come through before accepting the work as complete. FINANCIAL IMPACT The original construction budget (including contingency) for the Interurban Roadway Project was $8,737,508.39. Upon final settlement, the cost was $8,917,921.31. The additional funding was secured through reimbursement from a Transportation Improvement Board grant, traffic impact fees and cost savings from the 2017 Overlay & Repair Project. The final project expenditures are as follows: Expenses Original Construction Contract Amount $7,597,833.39 Additional Change Order Costs 1,320,087.92 Total Contract Amount $8,917,921.31 RECOMMENDATION Council is being asked to formally accept the Interurban Ave S project and authorize the release of the payment and performance bond subject to standard claim and lien release procedures, and to consider this item on the Consent Agenda at the October 15, 2017 Regular Council Meeting. Attachment: Notice of Completion, Contract #14-067 Final Contractor Voucher Certificate W:IPW EngIPROJECTS\A- RW & RS ProjectslInterurban Ave S (90310402)IConstructionl#.400 - ProjectTrackingl- DRAFTSIInfo Memo - IU Roadway Closeout - DRAFr.docx 15