SR-29 Sonoma Blvd and Sequoia Ave ramps to I-80 to be closed


District: Four - Oakland 
Contact: Pedro Quintana
Phone: (510) 867-6028
Email: Sonoma Blvd and Sequoia Ave ramps to I-80 to be closed map

Interstate 80 State Route 29 Separation Bridge Project-Vallejo: 
SR-29/Sonoma Blvd and Sequoia Ave. ramps to I-80 to be closed
Use Curtola Pkwy and Magazine Street to enter exit I-80
Starts June 11, 2021

Solano County – Caltrans is scheduled to begin pre-construction work for the Interstate-80 (I-80)/State Route 29 (SR-29) Separation Bridge project in Vallejo. 

For public and worker safety, the following I-80 On-ramps near the California State University, Maritime Academy (CSUM) campus in Vallejo are scheduled to be closed starting June 11, and will remain closed until approximately 2023;

  • Sequoia Avenue On-ramp to WB I-80-to be closed
  • SR-29/Sonoma Blvd. On-ramp to WB I-80-to be closed

During these I-80 ramp closures, motorists are advised to use the Magazine Street On-ramp and Off-ramp and Curtola Pkwy (I-780) and other I-80 entrances to access I-80 in Vallejo. 

The westbound I-80 Off-ramp at Sequoia Avenue will remain OPEN. 
The eastbound I-80 Off-ramp at SR-29/Sonoma Blvd. will be reduced from two to one lane and will remain largely open but may be intermittently closed during various overnight closures. 

During the long-term ramp closures, Caltrans will begin work on replacing an elevated section of I-80 above the SR-29/Sonoma Blvd. exit in Vallejo. 
Caltrans will provide additional detour maps and details as soon as they become available. 
8029 Overcrossing Replacement Project pre-construction 02
Motorists should expect delays and watch for various detour signs within the construction zone. 
To learn more about the I-80/SR-29 Separation Bridge Project Vallejo:
For 24/7 traffic updates, please visit

For real-time information, please visit Caltrans QuickMap:

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