Interstate 10 at Monroe Street Interchange Improvements

Riverside County Transportation Department is inviting bids on labor, materials, tools, and equipment for the Interstate 10 at Monroe Street Interchange Improvements project in Indio, California (Project No. C7-0048, Federal Aid No. STPLN-5956(294)), with bids due October 14, 2026 at 2:00 p.m. and a mandatory pre-bid meeting on September 30, 2026 at 3:00 p.m. at the County of Riverside Transportation Department, 3525 14th Street, Riverside, California.

The successful bidder must hold a current and active State of California Class "A" Contractor's license at the time of contract award. No DBE contract goal applies, though the County affirms that disadvantaged and minority businesses will be afforded full opportunity to submit bids. The project is subject to prevailing wage requirements under California Labor Code Section 1771.1 and federal wage determinations established by the U.S. Secretary of Labor, with contractors required to pay the higher rate where applicable. All contractors and subcontractors must be registered with the Department of Industrial Relations prior to bidding and performing work. The project is funded through federal aid and subject to "Buy America" provisions and Title VI Civil Rights Act compliance.

Engineering estimates span multiple bid schedules: Base Bid Schedule A ranges from $95 million to $110 million; Schedule B from $16 million to $19 million; Schedule C from $850,000 to $1 million; Schedule D from $97,000 to $113,000; and Alternative Bid Schedule A from $570,000 to $650,000. The total working period is 585 days with a plant establishment period of 750 days. Bid, performance, and payment bonds are required at 10%, 100%, and 100% of contract value, respectively. Digital bidding documents are available at no cost; printed sets with 11" × 17" plans may be obtained for $65.00 per set plus mailing costs. Questions are due before the pre-bid meeting date.