Removal & Replacement of Southwest & Columbia Bridges

The City of St. Louis is soliciting competitive bids for the demolition of existing Southwest Avenue and Columbia Avenue bridges over the Union Pacific Railroad and the construction of a new single‑span bridge, accompanied by extensive roadway, utility, drainage, lighting, and traffic‑signal upgrades. The project includes full design, engineering, and construction services, adhering to prevailing‑wage, Buy‑America, and DBE requirements, with a 5 % bid guaranty and a 240‑working‑day performance period. • Demolition of two existing railroad bridges and construction of a new bridge on Southwest Avenue. • Comprehensive roadway improvements: mill‑and‑overlay pavement, new sidewalks, curb ramps, lighting, traffic signals, signage, and drainage upgrades. • Utility relocation (water, sewer, gas, telecom, power), erosion control, MSE retaining walls, and temporary traffic control provisions. • Mandatory compliance with prevailing‑wage rates, Buy‑America provisions, DBE participation (0 % goal), OSHA 10‑hour training, and E‑Verify enrollment. • Bid deposit of 5 % required; liquidated damages of $4,025 per day for schedule overruns; award to the lowest responsive, responsible bidder.