IFB 115-26 Addendum 3.docx

This is an Addendum to Invitation for Bid (IFB) 115-26 issued by the Massachusetts Bay Transportation Authority (MBTA) for the Union Square Transit Signal Priority Project in Somerville. The addendum extends the IFB opening date from September 3, 2026 to September 10, 2026 at 2:00 PM EST. The project scope encompasses the installation and maintenance of transit signal priority equipment, video detection systems, Advanced Transportation Controllers, and signal timing modifications at three signalized intersections in Somerville to serve five bus routes and trolley service. The pre-bid conference was scheduled for August 17, 2026, with the original bid due date of August 27, 2026 being superseded by the extended deadline. The contract is structured as a lump-sum, firm-fixed-price engagement with an initial three-year service period, renewable for up to four additional years, providing a maximum 15-year total contract term.

Bidders must submit responsive and responsible proposals on a lowest-price basis, with an acceptance period of minimum 120 calendar days from the extended bid due date. All work must comply with prevailing wage requirements, Manual of Uniform Traffic Control Devices standards, and MassDOT specifications. Contractors are required to maintain Commercial General Liability Insurance of $1 million per occurrence and $1 million aggregate, Automobile Liability Insurance of $1 million combined single limits, and Workers' Compensation Insurance with $1 million per-accident limits, with the MBTA named as additional insured. Deliverables include shop drawings within 30 days of execution, manufacturer certificates of compliance, wiring diagrams, as-built electronic configuration files, operation and maintenance manuals, and end-user training prior to final acceptance testing. Video detection system hardware includes a minimum one-year transferable manufacturer warranty.