Design Services, Larson Road Bridge #101 Seismic Retrofit

The County entered into a professional services agreement with KPFF, Inc. to provide comprehensive seismic‑retrofit design services for Larson Road Bridge #101, a 1962 bridge located on a critical seismic lifeline route in Snohomish County, WA. The design effort includes seismic evaluation, engineering design, and preparation of construction documents, all funded by the Federal Highway Administration through WSDOT Local Programs. The contract is a fixed‑price agreement with a base amount of $578,244.68 and an authorized amendment ceiling of $57,824.47, resulting in a maximum contract ceiling of $636,069.15. The contract was awarded after a competitive RFQ process (two firms responded) and was authorized by the County Council on 4 December 2024, with the award date recorded as 31 December 2024. The Director of Public Works may approve amendments up to the specified ceiling, provided appropriation authority exists. • Scope: Seismic‑retrofit evaluation, design, and construction‑document preparation for Larson Bridge #101. • Value: Up to $636,069.15 (base $578,244.68 plus amendment allowance). • Procurement: Competitive RFQ (RFQ‑24‑009SB) with single award to KPFF, Inc. • Funding: Federal FHWA funds administered by WSDOT Local Programs. • Authority: Snohomish County Council motion authorizing County Executive to sign; amendment authority granted to Director of Public Works.