Caltrans to Activate Ramp Meters on Interstate 80 Corridor Starting July 26th for AM Commute


Contra Costa County / Alameda County, Calif. – The California Department of Transportation (Caltrans) in partnership with Alameda County Transportation Commission and Contra Costa County Transportation Authority will activate 43 ramp meters on the Interstate 80 (I-80) corridor between the Carquinez and Bay Bridges in Alameda and Contra Costa Counties. Ramp meters improve safety, enhance mobility and address freeway congestion by controlling traffic demand so freeway capacity is not exceeded.

Starting on July 26th, the lights will begin metering in both eastbound and westbound directions during the weekday morning commute hours of 5:00 a.m. to 12:00 Noon. The ramp metering lights will remain solid green for the afternoon weekday commute from July 26th until August 2nd, at which time they will activate in both directions during the afternoon weekday commute hours of 12:00 Noon to 8:00 PM. Meters will also be operating on weekends, starting July 30, depending on prevailing traffic conditions.

It is common for motorists at newly activated ramp-meter locations to experience delays during the first few days. Caltrans will monitor the metered onramps and make adjustments to fine-tune the metering operations. A telephone hot line number, 510-286-4531, is available to help answer any questions or report any related issues.

The ramp meters on I-80 are connected to an intelligent adaptive system that will actively monitor traffic conditions throughout the corridor and optimize the ramp meters in real-time. It is a key element of the I-80 SMART Corridor system, an Intelligent Transportation System (ITS) designed to enhance mobility and safety in the I-80 Corridor. More information is available at The I-80 SMART Corridor system is anticipated to be fully operational by September 2016.


Get real-time traffic on Caltrans Quickmaps: Or follow Caltrans on Twitter: Caltrans appreciates your patience as we work to maintain California’s highways. Please #BeWorkZoneAlert.


About Kevin

Mayor - City of Oakley, Data Center Manager of Mainframe Operations and Optimization – USS-POSCO INDUSTRIES, Co-Founder and Board Member - Friends of Oakley A Community Foundation, Advisory Board – Opportunity Junction, Commissioner - Contra Costa Transportation Authority, Board Member - Tri Delta Transit and Transplan
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