Interstate 680/State Route 4 Interchange Improvement Project
Traffic Advisory: Full Nighttime Closures of Pacheco Boulevard
Monday, July 29 through Friday, August 2, 2019
Contact Information
Linsey Willis Alejandro Lopez
Contra Costa Transportation Authority California Department of Transportation
925.256.4728 510.286.5445
[email protected] [email protected]
The Contra Costa Transportation Authority (CCTA) and the California Department of Transportation (Caltrans) are constructing the first phase of a multi-phased project to improve safety and help reduce congestion at the Interstate-680/State Route 4 Interchange in central Contra Costa County. In order to facilitate the setting of overhead girders and ensure crew and public safety during this operation, temporary nighttime closures of Pacheco Boulevard in both directions will occur for approximately five consecutive nights, Monday, July 29th through Friday, August 2nd from 10:00 p.m. until 5:00 a.m. This work has been scheduled during nighttime hours to minimize impacts to commute-hour traffic.
Planned closures include:
Monday, July 29 through Friday, August 2, 2019
10:00 p.m. – 5:00 a.m.
Both Directions of Pacheco Boulevard in Martinez
Please see closure and detour map below.
Motorists are advised to be alert for on-site closure and detour signs, and to Slow for the Cone Zone. Please drive with caution through the detours and leave a safe traveling distance between your vehicle and vehicle ahead of you.
About the Interstate 680/State Route 4 Interchange Improvement Project
The Interstate 680/State Route 4 Interchange Improvement Project will widen approximately four miles of State Route 4 in both directions between Morello Avenue in Martinez and State Route 242 by adding a third lane in the eastbound and westbound directions to improve on-ramp and off-ramp merging. The project also includes widening of five structures, extending eastbound State Route 4’s carpool lane approximately two miles, installation of safety lighting, and replacement of the Grayson Creek Bridge to bring it up to current State bridge safety codes. This segment of work in this multi-phased project will lay the groundwork for future improvements to connector ramps, improve traffic safety and enhance traffic flow.
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