I-680 Paving Project

Current Traffic Advisories

Southbound I-680 between Alcosta Boulevard in San Ramon and I-580/I-680 Connector
REOPENED as scheduled Monday, September 23, 2024

Alameda and Contra Costa Counties – Caltrans reopened all lanes of southbound Interstate 680 between Alcosta Boulevard in San Ramon and the I-580/I-680 connector in Pleasanton to traffic as scheduled at 4 a.m. Monday, Sept. 23, 2024.

During the closure, workers removed and replaced deteriorated pavement for a smooth ride for motorists for decades to come.

Caltrans shrank 40 nights of nighttime closures into one weekend, sparing motorists three months of nighttime closures. Weekend closures also enhance safety for workers and motorists.

Learn more about the closure at www.680paving.com or leave a question on our project hotline at (510) 286-0319.

Caltrans thanks the motoring public for your patience as we work to improve I-680.

For more information, please visit the Alameda County Transportation Commission website at https://bit.ly/43dKwg1.

Project Media Gallery

Additional project resources including downloadable maps, image galleries, and video clips can be found on the media resources page.

Caltrans Repaving Northbound Interstate 680 Between Sunol and San Ramon

Caltrans is embarking upon a major improvement project that will repave northbound Interstate 680 and replace entire sections of the roadway to enhance safety and provide a smoother ride to motorists.

The project will take place on I-680 between Koopman Road in Sunol and Alcosta Boulevard in San Ramon.

Caltrans will need to close freeway lanes and entire sections of the freeway to do the work. The work began in December 2022, starting in the Sunol area and working northward.

The first part of the project is located in the City of Sunol.

To perform this work, Caltrans has scheduled to close northbound Interstate 680 overnight from the I-680/State Route 84 junction to the Sunol Boulevard exit starting in December 2022 and anticipated to complete in April 2023.

All work is weather-dependent.

Caltrans is aware that the closures will impact the motoring public and every step is being taken to minimize inconvenience.

California Highway Patrol officers and message signs will be on hand to guide motorists.

Caltrans thanks the motoring public in advance for your patience as we work to improve I-680.

Traffic Advisories

• Partial Closure of Southbound I-680 between Alcosta Boulevard in San Ramon and I-580/I-680 Connector in Pleasanton May 31-June 3, 2024
• Full Closure of Southbound I-680 in Pleasanton between I-580/I-680 Connector and Koopman Road President’s Day Weekend, Feb. 16-20, 2024
• Full Closure of Southbound I-680 in Pleasanton between I-580/I-680 Connector and Koopman Road MLK Jr. Weekend, Jan. 12-16, 2024
• Full Closure of Northbound I-680 in Sunol/Pleasanton Between State Route 84 and Sunol Boulevard Three Consecutive Weekends in February 2023
• UPDATE: POSTPONED: Full Closure of Northbound I-680 in Sunol Between State Route 84 and Sunol Boulevard on MLK Holiday Weekend Jan. 13-17, 2023
• Northbound I-680 Closures Between SR-84 and Sunol Boulevard In Pleasanton Sunday through Thursday Nights Starting January 8, 2023
• Full Closure of Northbound I-680 in Sunol Between State Route 84 and Sunol Boulevard on MLK Holiday Weekend Jan. 13-17, 2023 (In Case of Rain, Closure Will be Rescheduled)
• ACTUALIZACION: Cierre de el I-680 en dirección norte durante la noche entre la Ruta Estatal 84 y Sunol Boulevard en Sunol Diciembre 12, 2022-Abril 2023
• Northbound I-680 Overnight Closures Between State Route 84 and Sunol Boulevard in Sunol December 2022-April 2023 (UPDATE: 12/5/2022)