BRENTWOOD, CA – In partnership with the City of Brentwood, the Contra Costa Transportation Authority (CCTA) is constructing the Mokelumne Trail Bicycle and Pedestrian Overcrossing to provide safe access to cyclists and pedestrians for commuting and recreational travel, reconnecting two sides of the trail that were separated by the expansion of State Route 4.
The overnight closures are to facilitate construction work that will install the pedestrian and bicyclist crossing over State Route 4, marking a major milestone in the project. These closures will impact State Route 4 in both the Eastbound and Westbound directions. CCTA and the California Department of Transportation (Caltrans) have scheduled the closures during evening hours in order to minimize impacts to the motoring public.
In order to ensure crew and public safety during the planned construction work, temporary nighttime freeway closures in both directions of State Route 4 will occur between Friday, March 31, 2023 and Thursday, April 6, 2023 on the following schedule (weather permitting):
- Friday March 31, 2023
Eastbound State Route 4 will be closed from midnight until 6:00am on Saturday, April 1, 2023 - Saturday, April 1, 2023
Westbound State Route 4 will be closed from 11pm until 7:00am on Sunday, April 2, 2023 - Sunday, April 2, 2023
Westbound State Route 4 will be closed from 11pm until 4:00am on Monday, April 23, 2023 - Monday, April 3, 2023
Eastbound State Route 4 will be closed from 11pm until 4:00am on Tuesday, April 4, 2023 - Tuesday, April 4, 2023
If any work remains to be completed, State Route 4 may be closed in either the Eastbound or Westbound direction from 11pm until 4:00am on Wednesday, April 5, 2023 - Wednesday, April 5, 2023
If any work remains to be completed, State Route 4 may be closed in either the Eastbound or Westbound direction from 11pm until 4:00am on Thursday, April 6, 2023
Detours
Detours will be in place to reroute drivers around the closures and are planned as follows:
Eastbound traffic will be directed to exit at Lone Tree Way, go eastbound to Shady Willow Lane, then southbound on Shady Willow Lane to Sand Creek Road, before proceeding westbound on Sand Creek Road to the eastbound State Route 4 on-ramp.
Westbound drivers having to detour will exit on Sand Creek Road and go eastbound on Sand Creek Road to Shady Willow Lane, then northbound on Shady Willow Lane to Lone Tree Way, and proceed westbound on Lone Tree Way to the westbound State Route 4 on-ramp.
About the Contra Costa Transportation Authority
The Contra Costa Transportation Authority (CCTA) is a public agency formed by Contra Costa voters in 1988 to manage the county’s transportation sales tax program and oversee countywide transportation planning efforts. With a staff of twenty people managing a multi-billion-dollar suite of projects and programs, CCTA is responsible for planning, funding and delivering critical transportation infrastructure projects and programs that connect our communities, foster a strong economy, increase sustainability, and safely and efficiently get people where they need to go. CCTA also serves as the county’s designated Congestion Management Agency, responsible for putting programs in place to keep traffic levels manageable. More information about CCTA is available at ccta.net.
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