1U610 Wrong Way Countermeasures Install

The California Department of Transportation, District 10 – Stockton, is preparing to implement wrong-way driver preventative countermeasures along State Route 4 and 99 and Interstate 5 in San Joaquin, Stanislaus, and Merced Counties, covering 23 identified locations within the state right of way. The project involves installing flashing wrong-way signage, guardrail systems, and performing pavement maintenance such as removing and replacing striping, pavement markers, and applying slurry seal to improve visibility and driver guidance. These measures are designed to proactively reduce the risk of wrong-way driving incidents and enhance overall roadway safety. All work is planned to occur within existing Caltrans property boundaries to ensure minimal disruption and compliance with state infrastructure standards. The initiative is part of a broader effort to mitigate high-risk driving behaviors before they result in collisions or fatalities. The project identifier is 1U610, with the solicitation forecast posted on June 3, 2026, and is managed by Environmental Scientist Maria Garcia Lopez, who can be contacted at maria.garcia.lopez@dot.ca.gov or 209-670-9385. The work will be executed in accordance with Caltrans protocols and environmental regulations, though no specific set-aside or NAICS code is indicated at this stage. Full details and project documentation are accessible via the California Environmental Quality Act network at the provided link. The project’s timing and locations reflect a targeted response to documented safety concerns along these high-traffic corridors.