Contra Costa County

Marsh Creek Road Bridges Replacement

The Marsh Creek Road Bridges Replacement Project replaced two aging bridges along Marsh Creek Road with new single-span prestressed concrete girder structures designed to improve safety, reliability, and long-term performance. The project included bridge demolition and replacement, roadway reconstruction and realignment, drainage improvements, utility relocations, and traffic management to maintain mobility throughout construction. As the prime consultant, Knight CM Group provided resident engineering, structures inspection, construction oversight, contract compliance monitoring, traffic safety coordination, and project documentation services to support the successful delivery of this critical transportation improvement project.

Elements: Bridge replacement, bridge demolition, prestressed concrete girder bridges, CIDH pile foundations, roadway reconstruction, roadway realignment, approach roadway improvements, grading and excavation, drainage improvements, utility relocation, traffic control, traffic safety coordination, pavement delineation, environmental compliance, site preparation, construction inspection, resident engineering, falsework review, contract administration, project documentation.

Project Cost
$12 Million
Project Duration
August 2023 - February 2025