San Ramon Valley commuters will notice lane shortages throughout this month due to ongoing construction for the Interstate 680 express lanes.
Overnight work on the project will continue on the freeway Mondays through Saturdays, and other associated construction will occur on San Ramon Valley Boulevard and Crow Canyon Road during the hours of 9:30 a.m. and 3 p.m. on weekdays through June 30, according to the Metropolitan Transportation Commission (MTC).
"Nearly all of the overhead toll sign structures will be placed in the corridor, and reconstruction work will continue on the median barriers," MTC officials said in their monthly construction update email.
In order to maintain a safe work zone, temporary k-rail and construction signage along with orange plastic fencing will be shown on the freeway from Martinez to Dublin, officials said.
The construction will include installing a fiber-optic cable along I-680. "The electrical work for the communications network will provide power to the overhead toll signs," MTC officials said.
Nightly lane closures due to the construction project will occur Mondays through Thursdays from 8 p.m. to 5 a.m., Fridays from 8 p.m. to 7 a.m. and Saturdays from 7 p.m. to 10 a.m.
The $49 million express lanes project on I-680 from Walnut Creek to Dublin is expected to be completed by this fall.
As proposed, the congestion-relief project aims to replace existing high-occupancy vehicle (HOV) lanes with express lanes on southbound I-680 from Rudgear Road to Alcosta Boulevard and on northbound I-680 from Alcosta to Livorna Road in Alamo -- approximately 23 miles overall.
The express lanes would be free to access for carpools, vanpools, public transit, motorcycles and eligible clean-air vehicles while other solo drivers could pay a toll to use the lanes. Toll lane hours and rates have not been finalized, according to the MTC.