Caltrans turns I-505 intersections into roundabouts for safer spins
Published Date: 9/11/2026
Notice
Summary
Caltrans and the City of Vacaville are set to improve Interstate 505 in Solano County by replacing three busy intersections with roundabouts and adding new bike and pedestrian paths. These changes will make travel safer and smoother for drivers, walkers, and cyclists. If you want to challenge these decisions, you have until February 8, 2027, to file a claim.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
I-505 Roundabouts and Bike/Ped Connections
Caltrans and the City of Vacaville will replace three intersections with roundabouts and add new bicycle and pedestrian connections along Interstate 505 at Vaca Valley Parkway between postmiles R1.2 and R1.7. The Environmental Assessment with a Finding of No Significant Impact for the project was approved on March 12, 2026, and the project is intended to help improve traffic, pedestrian, and bicycle operations.
Deadline to Challenge Project Decisions
If you want to file a legal claim challenging the federal approvals for the I-505 Vaca Valley Parkway Corridor project, your claim must be filed on or before February 8, 2027, or it will be barred. If a federal law authorizing judicial review sets a time period of less than 150 days, that shorter period applies instead.
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Key Dates
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