Railroad Timber Bridge Replacements: Basalt Creek (MP 29.31) & San Antonio Slough (MP 31.74)

The Sonoma-Marin Area Rail Transit District (SMART) has issued an Invitation for Bid (CV-BB-26-005) for the replacement of two railroad timber bridges at Basalt Creek (MP 29.31) and San Antonio Slough (MP 31.74) with steel open deck bridges. The project, which has an engineer's estimate between $1,650,000 and $1,900,000, involves complex construction requirements including night work between 10:00 PM and 3:30 AM on an active rail line and adherence to strict environmental windows. The work is expected to last approximately 45 working days at each location. Bidders must comply with various federal and state regulations, including the Build America, Buy America Act, DBE requirements under 49 C.F.R. Part 26, and Title VI nondiscrimination standards. The contract will be awarded to the lowest bidder determined to be both responsive and responsible. Responsiveness is evaluated based on adherence to all mandatory bidding requirements, such as proper signatures, completeness, and the acknowledgment of all addenda. Responsibility is assessed based on the bidder's trustworthiness, capacity, and experience, specifically requiring a certification from a railroad representative confirming successful completion of previous bridge replacement projects on active lines. Required documentation for submission includes a Bid Form, Questionnaire and Financial Statement, and a Bidder's Bond. All submissions must be uploaded in PDF format to the designated portal by the deadline of October 21, 2026, at 2:00 PM PDT.