The STATUS Newsletter is published every month after the STA Board meeting to inform the public and our stakeholders of what’s happening with transportation in Solano County.
Click the link HERE to view the October 2026 STATUS Newsletter.
Date: October 29, 2026
Agency: 4 – Bay Area
Contact: Sabrina Martinez
Phone: (510) 934-5257
Email: sabrina.martinez@dot.ca.gov
UPDATE
State Route 37 (SR-37) Between Mare Island and Sears Point in Solano County
*** ALL WORK IS WEATHER DEPENDENT ***
SOLANO, NAPA AND SONOMA COUNTIES – Caltrans District 4 will be implementing multiple closures on SR-37 in both Eastbound and Westbound directions as part of emergency preparedness for El Niño storm preparedness. Crews are expediting work requiring full closures of the route earlier this week.
Motorists should drive with caution as the Eastbound and Westbound SR-37 traffic are now in a temporary traffic configuration and the speed limit are now temporarily reduced to 45 miles per hour, just west of Vallejo. Motorists will also need to drive adjacent to newly positioned moveable concrete barriers known as K-Rail.
In the coming days, crews will now focus their efforts on the Eastbound lanes to raise portions of the roadway and to repair prior damage due to storms. This work will improve resiliency and address flooding concerns along this vital transportation corridor.
During this new temporary traffic configuration, the Eastbound SR-37 exit to Walnut Ave on Mare Island will be closed. (See Below for Detour)
In the coming month a secondary closure will be scheduled in November 2026 as work on SR-37 continues. Caltrans will provide detailed information with specific dates and times as soon as information is available.
For more project details go to www.37pave.com
Eastbound SR-37 DETOUR:
Motorist coming Eastbound 37 will find that the Walnut Ave exit is closed. To get
to Mare Island motorist have to continue onto Napa River Bridge and get off on
the Wilson Ave. Exit. Then there are two options:
Option 1 – Take a left on Wilson Ave and get back on Westbound 37 and continue to the Walnut Ave. Exit.
Option 2- Make a right on Wilson Ave and continue to the Mare Island Causeway and take it in the Westbound direction.
Note- Mare Island Causeway is closed in the Eastbound Direction. Take Railroad Ave to the Napa River Bridge to leave Mare Island.
What Motorists Should Know
• Expect significant delays and increased travel times
• Use alternate routes whenever possible
• Follow posted detour signs and traffic control devices
• All work is weather dependent
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay
For real-time information, please visit Caltrans QuickMap: http://quickmap.dot.ca.gov/
Date: October 23, 2026
Agency: 4 – Bay Area
Contact: Sabrina Martinez
Phone: (510) 934-5257
Email: sabrina.martinez@dot.ca.gov
REMINDER & URGENT UPDATE
Daytime Two-Lane Closure on State Route 29 from Sequoia Ave. to Mini Drive (Solano/Napa County Line) in Vallejo, Solano County
Schedule: Monday through Thursday from 9 a.m. to 6 p.m.
Friday from 9 a.m.-7p.m.
SOLANO COUNTY – Caltrans continues to pave State Route 29 (Sonoma Boulevard) a 6-mile stretch from Calpoly Maritime Academy to Solano/Napa County Line.
Lane closures are necessary to complete major pavement work and for the safety of the crews and public. Two lanes will be closed, and one lane will always be open for traffic. Starting Oct. 26 closure start times are shifting to daytime lane closures.
Schedule:
What to expect?
Pedestrians should be aware of detours due to closed off areas. If pedestrians need to cross while work is happening, please make a worker aware, and they will assist you in getting across the street.
When grinding and paving is occurring adjacent to the sidewalk alleys and parking zones will be closed on a rolling basis. Motorists are advised to avoid the area or use alternate routes in the areas with closed alleys.
**Work will generate noise and vibrations during active work hours**
**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, download the QuickMap App available in your App store or click on Caltrans QuickMap: http://quickmap.dot.ca.gov/
Date: October 16, 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
Daytime Two Lane Closure on Interstate-80 (I-80) Carquinez Bridge, Solano/Contra Costa County
Schedule: Sunday, Oct. 18, from 5:00 a.m. until 11:30 a.m.
SOLANO/CONTRA COSTA COUNTY — Caltrans maintenance has scheduled the closure of two lanes on Eastbound (EB) I-80 Carquinez Bridge, starting at the Cummings Skyway Overcrossing to the Toll Plaza.
The closure is necessary to give maintenance crews the opportunity to help Caltrans Electricians repair the overhead lighting from the Pomona Off-Ramp to the other side of the Bridge.
Schedule:
Start: Wednesday, Oct. 18 at 5:00 a.m.
End: Wednesday, Oct. 18 at 11:30 a.m.
**All work is dependent on weather and subject to change**
Sign up – Carquinez Mailing List
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: October 16, 2026
Agency: 4 – Bay Area
Contact: Sabrina Martinez
Phone: (510) 934-5257
Email: sabrina.martinez@dot.ca.gov
REMINDER & URGENT UPDATE
Nighttime Two-Lane Closure on State Route 29 from Sequoia Ave. to Mini Drive (Solano/Napa County Line) in Vallejo, Solano County
Schedule: Monday through Friday from 5 p.m. to 6 a.m. the following mornings
SOLANO COUNTY – Caltrans continues to pave State Route 29 (Sonoma Boulevard) a 6-mile stretch from Calpoly Maritime Academy to Solano/Napa County Line.
Lane closures are necessary to complete major pavement work and for the safety of the crews and public. Two lanes will be closed, and one lane will always be open for traffic. Closure start times are 4 p.m. on Oct. 16 and 5 p.m. beginning Oct. 19, allowing crews to work on curbs, medians, and lighting in addition to paving.
Schedule:
Nightly- Monday through Friday
Oct. 16- 4 p.m. to 6 a.m. the following mornings.
Oct. 19 – Oct. 23 – 5 p.m. to 6 a.m. the following mornings.
10/13 to 10/19 – Segment 1 (Sequoia Avenue to Curtola Parkway) will be paved.
10/19 to 10/23 – Segment 2 (Curtola Parkway to Mississippi Street)
What to expect?
Pedestrians should be aware of detours due to closed off areas. If pedestrians need to cross while work is happening, please make a worker aware, and they will assist you in getting across the street.
When grinding and paving is occurring adjacent to the sidewalk alleys and parking zones will be closed on a rolling basis. Motorists are advised to avoid the area or use alternate routes in the areas with closed alleys.
**Work will generate noise and vibrations during the night**
**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, download the QuickMap App available in your App store or click on Caltrans QuickMap: http://quickmap.dot.ca.gov/
Date: October 12, 2026
Agency: 4 – Oakland
Contact: Bart Ney
Phone: (510) 715-7212
Email: Bart.Ney@dot.ca.gov
55-Hour Full Closure of State Route 37 Between Vallejo and Sonoma Scheduled Friday, October 23, from 10:00 PM to Monday October 26, 5:00 AM
All work is weather dependent.
SOLANO, NAPA AND SONOMA COUNTIES –
Caltrans District 4 will be implementing multiple closures on SR-37 in both Eastbound (EB) and Westbound (WB) directions as part of emergency preparedness for El Niño storm preparation. Crews are expediting work requiring full closures of the route
First, on Wednesday October 21st and Thursday October 22nd Caltrans will be closing SR-37 in the WB direction only from 7PM to 4AM the next day. Second, at 10 p.m. Friday, Oct. 23, until 5 a.m. Monday, Oct. 26, the Department will close both EB and WB Lanes on State Route 37 (SR-37) from Mare Island to Sears point in Solano/Napa County. Work will consist of median demolition and k-rail installation to shift both EB and WB traffic to the WB Lanes.
Once the shift is complete, crews will focus their efforts on the EB lanes to raise portions of the roadway by 3 feet to improve resiliency and address flooding concerns along this vital transportation corridor.
The 55 Hour closures will start Friday October 23, at 10:00 p.m. to the following Monday October 26, at 5:00 a.m.
Changeable Message Signs (CMS) have been deployed throughout the region to notify motorists of the upcoming closure and encourage travelers to plan ahead.
In addition, overnight secondary closures have been scheduled for Friday November 13 from 10:00 p.m. to 5:00 a.m., Sunday November 15. This work is to remove the temporary barrier installed on Westbound and shift traffic/install temporary barrier onto Eastbound.
Detours routes are as follows:
EB SR-37 DETOUR:
Motorists traveling eastbound on SR-37 will need to exit left onto northbound SR-121 in Sonoma; Make a right on SR-12/SR-12, 1(Carneros Hwy) and continue;Right on SR-12/SR-29; Enter left for the connector loop Off-ramp back to EB SR-37.
Please note that all work is weather dependent and additional weeknight work may need to be scheduled. Please Plan Ahead and stay tuned for more information to follow.
WB SR-37 DETOUR:
Motorists traveling Westbound on SR-37 will need to exit right onto northbound SR-29 in Napa, and follow SR 29 to WB SR 12 then to SB SR 121;
What Motorists Should Know
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay
For real-time traffic, download the QuickMap App available in your App store or click on Caltrans QuickMap: http://quickmap.dot.ca.gov/
Or follow Caltrans on
Instagram at: https://www.instagram.com/caltransdistrict4/
Date: October 8, 2026
Agency: 4 – Bay Area
Contact: Sabrina Martinez
Phone: (510) 934-5257
Email: sabrina.martinez@dot.ca.gov
REMINDER: Nighttime Two-Lane Closure on State Route 29 from Sequoia Ave. to Mini Drive (Solano/Napa County Line) in Vallejo, Solano County
Schedule: Monday through Friday from 8 p.m. to 6 a.m. the following mornings
SOLANO COUNTY – Caltrans is continues to pave State Route 29 (Sonoma Boulevard) a 6-mile stretch.
Lane closures are necessary to complete major pavement work and for the safety of the crews and public. Two lanes will be closed, and one lane will always be open for traffic. Work will be done at night to minimize traffic impact.
Schedule:
Nightly- Monday through Friday from 8 p.m. to 6 a.m. the following mornings.
<COMPLETED> 9/21 to 9/25 – The six miles from Sequoia Avenue to Mini Drive. will be grinded, meaning the top layer of asphalt will be removed and prepped for new asphalt.
9/28 to 10/12 – Segment 3 (Mississippi Drive to county line) being paved.
10/13 to 10/19 – Segment 1 (Sequoia Avenue to Curtola Parkway) will be paved.
10/20 to 10/23 – Segment 2 (Curtola Parkway to Mississippi Street)
What to expect?
Pedestrians should be aware of detours due to closed off areas. If pedestrians need to cross while work is happening, please make a worker aware, and they will assist you in getting across the street.
When grinding and paving is occurring adjacent to the sidewalk alleys and parking zones will be closed on a rolling basis. Motorists are advised to avoid the area or use alternate routes in the areas with closed alleys.
**Work will generate noise and vibrations during the night**
**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, download the QuickMap App available in your App store or click on Caltrans QuickMap: http://quickmap.dot.ca.gov/
Date: October 8, 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
Daytime Ramp and Lane Closure on Interstate-80 (I-80) Carquinez Bridge, Solano/Contra Costa County
Schedule: Wednesday, Oct. 14, from 6:00 a.m. until 11:30 a.m.
SOLANO / CONTRA COSTA COUNTIES – Caltrans maintenance has scheduled the closure of the Pomona Eastbound (EB) on-ramp and single lane closure on EB I-80 Carquinez Bridge. The closure is necessary to give maintenance crews the opportunity to complete routine Maintenance.
Schedule:
Start: Wednesday, Oct. 14 at 6:00 a.m.
End: Wednesday, Oct. 14 at 11:30 a.m.
Detour:
Motorists can take the Westbound (WB) Pomona on-ramp to WB I-80 and take the first exit, Cumming Skyway off-ramp. Turn left across the overcrossing, then proceed to take the on- ramp to EB I- 80 across the Carquinez Bridge.
**All work is dependent on weather and subject to change**
Sign up – Carquinez Mailing List
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/
The STATUS Newsletter is published every month after the STA Board meeting to inform the public and our stakeholders of what’s happening with transportation in Solano County.
Click the link HERE to view the August/September 2026 STATUS Newsletter.
Date: September 22, 2026
Agency: 4 – Bay Area
Contact: Sabrina Martinez
Phone: (510) 934-5257
Email: sabrina.martinez@dot.ca.gov
UPDATE/CONTINUATION
Nightly One-Way Traffic Control on Highway 113 (HWY-113) for Pavement Rehabilitation near Dixon City in Solano County
Schedule: From Sept. 28 starting at 7 p.m. to 6 a.m. the next morning, until Oct. 1.
SOLANO COUNTY – Caltrans construction continues to work on HWY 113. The next task is stripping. Crews will strip the entire project from East Parkway Blvd to the HWY12/HWY-113 Junction, then move to Pedrick Rd.
Work will start on Monday, Sept. 28, from 7 p.m. until 6 a.m. the next morning. Work expected to be completed on Thursday, Oct. 1.
When crews reach Pedrick Rd. there will be closures to the on and off ramps to Interstate 80.
Detours:
WB I-80 On-Ramp from Pedrick Rd.
Take WB Sievers Rd. then a left onto Curry Rd. Motorist will continue on Curry Rd. to take the WB On-Ramp onto I-80.
WB I-80 Off-Ramp from Pedrick Rd.
Take the WB I-80 Off-Ramp at Dixon/Curry Rd; then continue north on Curry Rd. then a left on Sievers Rd.
Eastbound (EB) I-80 On-Ramp from Pedrick Rd.
Take EB Sparling Lane to WB Kidwell Rd. to take the EB I-80 On-Ramp
Eastbound (EB) I-80 Off-Ramp to Pedrick Rd.
Take Westbound (WB) Off-Ramp to Kidwell Rd. to WB I-80 and get off the WB I-80 OffRamp to Pedrick Rd.
** All work is weather dependent**
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay
For real-time traffic, download the QuickMap App available in your App store or click on Caltrans QuickMap: http://quickmap.dot.ca.gov/