Mokelumne Trail Bicycle and Pedestrian Overcrossing
CONNECTING COMMUNITIES TO ACTIVE TRANSPORTATION, TRANSIT, AND RECREATION
Overview
The Mokelumne Trail Bicycle and Pedestrian Overcrossing project will construct a bridge spanning Highway 4 in Brentwood, closing a gap in the trail that was created by the highway’s expansion. In connecting two sides of the Mokelumne Trail, the bridge will provide safe access to cyclists and pedestrians for commuting and recreational travel.
Design Highlights
- Multi-span bridge with a column in the Highway 4 median
- Bridge approaches will be constructed on earthen embankments
- Path will range from 12 to 16 feet in width
- Width will accommodate the potential for future autonomous shuttle travel
Schedule
CONSTRUCTION START: March 2022
ANTICIPATED COMPLETION: Late Summer or Early Fall of 2023
Costs & Funding
The cost to design and build the bridge is approximately $13 million, with funding provided through Measure J taxpayer dollars, the State Route 4 Bypass Authority, and bridge toll funds.
The overcrossing will provide access and connection to the future East County Intermodal Transit Center in Brentwood.
The Mokelumne Trail in the overcrossing project area is part of the larger Mokelumne Coast to Crest Trail that will, when completed, connect six counties across California from the East Bay to the Sierra Nevada Mountains.
For more info about this project, contact:
Ivan Ramirez, Director, Construction
Contra Costa Transportation Authority
925.256.4737
iramirez@ccta.net
Traffic Advisory
State Route 4 Overnight Closures Planned in Brentwood from Monday, October 9 through Saturday, October 14
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. Overnight closures are planned to protect the traveling public from debris during concrete finishing operations. State Route 4 will be impacted in the eastbound and westbound directions. CCTA and the California Department of Transportation (Caltrans) have scheduled the closures during the late evening and early morning hours in order to minimize impacts to the motoring public.
Overnight Freeway Closures of State Route 4 between Lone Tree Way and Sand Creek Road
In order to ensure crew and public safety during the planned construction work, temporary nighttime freeway closures in the westbound direction of State Route 4 will occur between Monday, October 9 and Saturday, October 14, 2023 on the following schedule (weather permitting):
- Monday October 9 from 10 p.m. until 4 a.m. the following morning: All lanes of SR-4 will be closed in both the eastbound and westbound directions.
- Tuesday October 10 from 10 p.m. until 4 a.m. the following morning: All lanes of SR-4 will be closed in both the eastbound and westbound directions.
- Wednesday October 11 from 10 p.m. until 4 a.m. the following morning: One lane of SR-4 will be closed in both the eastbound and westbound directions.
- Thursday October 12 from 10 p.m. until 5 a.m. the following morning: One lane of SR-4 will be closed in both the eastbound and westbound directions.
- Friday October 13 from 11 p.m. until 7 a.m. the following morning: One lane of SR-4 will be closed in both the eastbound and westbound directions.
- Saturday October 14 from 11 p.m. until 8 a.m. the following morning: One lane of SR-4 will be closed in both the eastbound and westbound directions.
Detours
Detours will be in place to reroute drivers around the closure and are planned as follows:
- 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.
- 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.
