Author: Neil Quintanilla

Date: July 23, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez / DeNise Harding
Phone:  (510) 934-5257 / (279) 234-2175
Email:  sabrina.martinez@dot.ca.gov  /  DeNise.Harding@dot.ca.gov

One-Lane and Shoulder Closure on Westbound I-80 Carquinez (Alfred Zampa) Bridge in the cities of Vallejo and Crockett

Starting: Friday, August 7, 2026, from 6:00 PM to Saturday, August 8, 2026 7:00 PM.

 

SOLANO/CONTRA COSTA COUNTIES  – Caltrans construction is scheduled to implement a one-lane and shoulder closure on westbound I-80 Carquinez (Alfred Zampa Memorial) Bridge on Friday, August 7, 2026, 6:00 PM, and continues until 7:00 PM Saturday, August 8, 2026. This work is in preparation for the upcoming 53-hour weekend full closure for a full deck replacement.

Schedule:
• Start – Friday, August 7, 2026, at 6:00 PM
• End – Saturday, August 8, 2026, at 7:00 PM

Note: Pedestrian/Bike Path is still accessible for the one-lane closure.

Motorists may expect delays and be aware of construction equipment on the deck bridge for the safety of workers and motorists.

Sign up for closure updates here: I-80 Westbound Carquinez (Al Zampa) Bridge Deck Rehabilitation Project or visit the Carquinez Bridge Website.

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

Date: July 22, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez
Phone:  (510) 934-5257
Email:  sabrina.martinez@dot.ca.gov

Nighttime Lane, Ramp Closures of Various Locations on Interstate 80 (I-80) in Fairfield, Solano County for Trash Capture Device Project

Start of work: Friday, July 24 from 8 p.m. to 5 a.m. the following mornings

 

SOLANO COUNTY  –  Caltrans is scheduled to start installation of a Trash Capture Device project on Interstate 80 (I-80) in the city of Fairfield. Prior to construction, k-rails will be put into place in Fairfield from Pittman Road to the North Texas Street overcrossing.

This requires nighttime lane closure at multiple locations. Closures will occur nightly starting on Friday July 24, from 8 p.m. until 5 a.m. the next mornings.

This project will install trash capture systems that will stop trash from going out into water sources. It will also entail update of guardrails and construction of mainline pull outs for maintenance vehicles and erosion control. Project will be in construction until January 2027.

Locations:
• Eastbound on and off-ramps to and from Pittman Road
• Westbound I-80 near State Route 12 (SR-12)
• Westbound I-80 near Air Base Parkway
• Various locations along I-80 in Fairfield from Pittman Road to the North Texas Street overcrossing.

 

** All work is weather dependent and subject to change**

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

 

Date: July 16, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez
Phone:  (510) 934-5257
Email:  sabrina.martinez@dot.ca.gov

One-way Traffic Control on Rio Vista Bridge/SR-12 Rio Vista City

Starting: July 16, 2026, from 07:00 PM to 05:00 AM the following day.

 

SOLANO COUNTY  – Caltrans Maintenance will implement a One-way traffic control on State Route 12 at the Rio Vista Bridge for deck maintenance starting on Thursday, July 16, 2026, 7:00 PM, and continuing until 5:00 AM July 17.

Schedule:
Start – July 16, 2026, at 7:00 PM
End- July 17, 2026, at 5:00 AM

Motorists will need to be prepared for significantly longer delays than usual as they pass through the area.

 

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

 

Date: July 14, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez
Phone:  (510) 934-5257
Email:  sabrina.martinez@dot.ca.gov

Nighttime Lane Closure and On/Off-Ramp Lane Closures of Various Locations on Interstate 80 (I-80) in Vallejo, Solano County

Starting July 14, 2026, from 08:00 PM to 05:00 AM the following day.

SOLANO COUNTY  – Caltrans Construction will be continuing the Trash Capture Project that requires nighttime lane closure of multiple locations. Closures will occur nightly starting on Tuesday July 14, 2026, at 08:00 PM to 05:00 AM the following day until set up completes Friday, July 17, 2026. This project will install trash capture systems that will stop trash from going out into water sources. It will also entail update of guardrails and construction of mainline pull outs for maintenance vehicles and erosion control.

Schedule:
Nightly
Start – Monday, July 14, 2026, at 08:00 PM to 05:00 AM the following day
End- Friday, July 17, 2026

 

Locations:
July 14 – 15, 2026
• Westbound route I-80 connector on-ramp from Route-780

 

July 16 – Grading of Maintenance Vehicle Pullouts (MVPs)
• Eastbound I-80 on-ramp from Magazine
• Westbound I-80 mainline near Redwood St.
• Westbound I-80 Off/On- Ramp to Tennessee St.
• 0.1 Mile West and East of Route 80/780 Separator
• Westbound I-80 off-Ramp to Columbus Prkwy.

 

July 17 – Removal of K-Rails
• Westbound connector On-Ramp from Route 780
• Westbound I- 80 mainline near Redwood St.
• Westbound I-80 Off-Ramp to Columbus Pkwy.

 

**All work is weather dependent and subject to change **

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

 

Date: July 13, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez
Phone:  (510) 934-5257
Email:  sabrina.martinez@dot.ca.gov

UPDATE: Nightly One-way Traffic Control on State Route-12 (SR-12) for Pavement Rehabilitation near Suisun City in Solano County

Schedule: Work starts on Monday June 22 at 8 p.m.

SOLANO COUNTY  – Caltrans is scheduled to continue pavement rehabilitation work on SR-12 from Monday, June 22 until the end of July, Friday, July 31 starting at 8 p.m. as crews will be performing roadway improvements.

This work includes rebuilding parts of the roadside to keep the highway strong, adding material along the shoulders for safety, installing asphalt dikes to help guide rainwater away from the road, and putting down new permanent lane striping for better visibility. These activities help maintain a safe and reliable roadway for all travelers.

Eastbound and westbound lanes of SR-12 will be subject to one-way traffic control with one lane open at a time alternating directions of traffic through the work zone.

Schedule:
Mondays to Thursdays from 8 p.m. to 5 a.m. the next mornings
Fridays from 9 p.m. until 5 a.m. the next mornings

Weekend closures as needed
Saturdays from 9 p.m. until 8 a.m. the next mornings
Sundays from 9 p.m. until 5 a.m. the next mornings

**All work is weather dependent and subject to change **

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

 

Date: 30 June 2026
Agency: Solano Transportation Authority, Caltrans District 4-Bay Area
Contact:  Sean Person, Contact:  Sabrina Martinez
Phone: (707) 399-3217, Phone: (510) 934-5257

State Route 37 (SR 37)/Fairgrounds Drive Interchange in Vallejo:
Watch for Temporary Closure and Detour on Northbound Fairgrounds
On Tuesday, July 7

SOLANO COUNTY  – The Solano Transportation Authority (STA), in close coordination with its transportation partner, the California Department of Transportation (Caltrans), is in the process of completing construction work on the new State Route 37 (SR 37)/Fairgrounds Drive Diverging Diamond Interchange (DDI) project in Vallejo. This is the first-ever DDI constructed in the Bay Area and only the second constructed on a major highway in California. The DDI was implemented to enhance safety and improve bicycle and pedestrian access in the area.

What to Expect:
The new DDI opened to traffic on Saturday, May 16, and final construction is slated to for completion soon. A temporary roadway closure and detour are planned, as follows:

• A temporary traffic closure of northbound Fairgrounds Drive is scheduled for Tuesday, July 7, from 5 a.m. to 1 p.m. Southbound Fairgrounds Drive and all other SR 37 ramps will remain open.
• Northbound Fairgrounds Drive will be closed between Sage Street and SR 37. Northbound traffic will be detoured right onto Sage Street, left onto Gateway Drive, and back to Fairgrounds Drive.
• Drivers traveling northbound on Fairgrounds Drive who wish to access either direction of SR 37 should follow the posted detour signs to reach the freeway on ramps from southbound Fairgrounds Drive.

Please follow on-site signage for detours and see the embedded map for additional closure information.

We appreciate the public’s cooperation and patience as important work on this important project continues! Motorists should drive with caution in construction zones, slow down for worker safety and expect travel delays. All work is weather dependent.

Diverging Diamonds are Safer and Easier to Access
Navigating the DDI is easy, just follow the road! Watch the informational video available on the STA website or at the link below for more information.

To learn about how to use the DDI, please watch our informational YouTube video at https://youtu.be/L7QOoovsVuU?si=AOsSTF2hREcpQwhA.

For general questions, please email our project team at: SR37-FairgroundsPIO@portal3.pbid.com.

For more information about the project, please visit https://sta.ca.gov/project/redwood-parkway-fairgrounds-dr-improvement-project/

For media inquires, please view the project media bar at https://dot.ca.gov/caltrans-near-me/district-4/d4-projects/d4-37-corridor-projects/37-diverging-diamond-interchange-media-resources

Date: June 19, 2026
Agency: 4 – Bay Area
Contact:  Sabrina Martinez
Phone:  (510) 934-5257
Email:  sabrina.martinez@dot.ca.gov

Nightly One-way Traffic Control on State Route-12 (SR-12) for Pavement Rehabilitation at Union Creek Bridge near Suisun City in Solano County

Schedule: Work starts on Monday June 22 at 8 p.m.

SOLANO COUNTY  – Caltrans is scheduled to continue pavement rehabilitation work on SR-12 from Monday, June 22 until Wednesday, July 15 starting at 8 p.m. until as crews will be performing roadway improvements near the Union Creek Bridge near Suisun City.

This work includes rebuilding parts of the roadside to keep the highway strong, adding material along the shoulders for safety, installing asphalt dikes to help guide rainwater away from the road, and putting down new permanent lane striping for better visibility. These activities help maintain a safe and reliable roadway for all travelers. Eastbound and westbound lanes of SR-12 will be subject to one-way traffic control with one lane open at a time alternating directions of traffic through the work zone.

Schedule:
Mondays to Thursdays from 8 p.m. to 5 a.m. the next mornings
Fridays from 9 p.m. until 5 a.m. the next mornings

Weekend closures as needed
Saturdays from 9 p.m. until 8 a.m. the next mornings
Sundays from 9 p.m. until 5 a.m. the next mornings

**All work is weather dependent and subject to change **

For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/

 

Date: June 5, 2026
Agency: 4 – Oakland
Contact:  Sabrina Martinez/Jeff Weiss
Phone:  (510) 934-5257 / (510) 715-8770
Email:  sabrina.martinez@dot.ca.gov / Jeffrey.Weiss@dot.ca.gov

Nighttime Lane Closures on State Route 37 (SR-37) for Vegetation Management from Solano to Sonoma County Line

 

Schedule: Starting on Sunday June 7 from 10 p.m. until 5 a.m. the next mornings

 

SOLANO COUNTY & SONOMA COUNTY  –  Caltrans Maintenance has scheduled lane closures on Westbound and Eastbound State SR-37 for vegetation management and street sweeping from Sunday, June 7 until Thursday, June 11 from 10 p.m. until 5 a.m. the next mornings from the Solano County line to the Sonoma County line. Motorists should expect 15-minute delays.

Caltrans is preparing the highway ahead of the busy summer season when motorists hit the road for destinations like the Napa and Sonoma valleys as well as the NASCAR races at Sears Point.

Schedule:

Work will be conducted in various locations:

• Sunday, June 7 – one-way traffic control from SR-37/SR-121 intersection to Noble Road
• Monday, June 8 – one-way traffic control from SR-37/121 intersection to Noble Road
• Tuesday, June 9 – moving lane closure for sweeping Westbound SR-37 from Walnut Avenue to Noble Road
• Wednesday, June 10 – moving lane closure for sweeping on Eastbound SR-37 from Noble Road to Walnut Avenue
• Thursday, June 11 – moving lane closure on Westbound and Eastbound SR-37 from Walnut Avenue to SR-37/121 intersection; final clean up where needed