MTC is partnering with Caltrans and the Contra Costa Transportation Authority to provide travel options that will improve traffic congestion on I-680 in Contra Costa County.
MTC opened Express Lanes between Walnut Creek and San Ramon in October 2017 and broke ground in October 2018 on a new project to establish a southbound Express Lane from Martinez all the way to the Alameda County line.
Learn more about planned improvements in the I-680 Corridor in Contra Costa County Fact Sheet.
Learn how to use the I-680 Contra Costa Express Lanes at 511.
View this graph to see the average posted toll in October 2017 to travel the full length of these express lanes.
MTC and its partners will:
- Build a southbound express lane from Marina Vista Avenue in Martinez to Rudgear Road in Walnut Creek by adding a lane and converting existing carpool lanes.
- Build a northbound express lane from North Main Street in Walnut Creek to Marina Vista Avenue in Martinez by adding a lane and converting existing carpool lanes.
Project 1 is under construction and scheduled to be complete by 2021. Learn what to expect during construction.
The schedule for Project 2 will be determined once funding is secured.