Site work and paving for a road / highway in Livermore, California. Conceptual plans call for site work for a road / highway; and for paving for a road / highway.

I-580/Vasco Road Interchange, Bridge No. 33C0400 is an overcrossing on Vasco Road over Interstate 580 and carries three northbound lanes and two southbound lanes. The proposed improvements will enhance operations and safety for all modes of travel along Vasco Road, provide connectivity for bicyclists and pedestrians through the interchange corridor, and accommodate the future Valley Link Project. The limits of improvement are from Vasco Road/Preston Avenue to Vasco Road/Forget Me Not intersections along Vasco Road, and along I-580 approximately from 0.75 miles west of the interchange to 0.68 mile east of the interchange. The project will remove the existing overcrossing and replace it with a wider and taller bridge, reconstruct the on and off ramps, and will include new traffic signals and safety elements. The proposed bridge will carry 9 travel lanes (5 in the northbound direction and 4 in the southbound direction). It will be approximately 300 long and 155 wide with a 19 vertical clearance in the median at the centerline of the proposed Valley Link alignment and will include Class VI Bicycle and Pedestrian Facilities in each direction consistent with the Citys Bicycle, Pedestrian and Trails Active Transportation Plan. Caltrans, as the owner/operator of the State Highway System, has jurisdiction of the interchange. The City has entered into a cooperative agreement with Caltrans which allows Caltrans to provide full oversight for all delivery phases of the project. The City is the implementing and administrating agency. The Project Study Report was approved by Caltrans in June 2023. Currently the project is in the Project Approval- Environmental Document phase. The budget covers the environmental and design phase. Project is in City of Livermore capital budget fy 2025-2030. As of December 3, 2025, this project is in the environmental phase until mid-2026. Design is expected to be complete in March of 2028, with construction following in January 2029. Information regarding an engineer or general contractor has not been made available.