Author: Neil Quintanilla

Date: April 30, 2025
Agency: Solano Transportation Authority & Caltrans, District 4-Bay Area
Contact:  Sean Person, Vince Jacala
Phone:  (707) 399-3217, (510) 385-7069

State Route 37/Fairgrounds Drive Interchange – Vallejo
Construction Shifts into Gear – May 2025
Watch for Traffic Lane Shifts/Overnight Ramp Closures

SOLANO COUNTY  – The Solano Transportation Authority (STA), in close coordination with its transportation partner, the California Department of Transportation (Caltrans), has started construction work on the new State Route 37 (SR 37)/Fairgrounds Drive Interchange Project in Vallejo. The interchange improvement project will enhance motorist safety and improve bicycle and pedestrian access with construction of a new divergent diamond interchange. This is the first-ever divergent diamond interchange (DDI) constructed in the Bay Area and only the second-ever constructed on a major highway in California.

What to Expect During Initial Construction Work
Construction at SR 37 and Fairgrounds Drive recently started construction in April 2025. The site is near the Six Flags Discovery Kingdom Theme Park and the Solano County Fairgrounds. Major public impacts to SR 37 and Fairgrounds Drive are scheduled to start in May 2025. In the coming weeks, motorists will begin to see lane traffic shifts, overnight ramp closures, tree removal, signage installation, and various temporary lane closures.

The following construction-related activities are set to happen starting in May 2025.

• Motorists on Fairgrounds Drive at SR 37 should watch for temporary traffic lane shifts.
• Eastbound on and off ramps at SR 37/Fairgrounds Drive will be closed overnight with detours. Closures are scheduled from 10:00 PM until 5:00 AM.
• The westbound off-ramp from SR 37 to Fairgrounds Drive will be closed nightly from 11:00 PM – 5:00 AM.
• The SolTrans bus stop at the on-ramp to Westbound SR 37 will be temporarily relocated a few feet away.

Motorists should drive with caution in construction zones and expect travel delays. All work is weather dependent.

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

STA and Caltrans will provide additional project details as soon as information becomes available.

For more information about the project and to view a video explaining the DDI design, please visit https://sta.ca.gov/project/redwood-parkway-fairgrounds-dr-improvementproject/.

STA and Caltrans thank the motoring public for its patience and understanding as we work to improve and maintain our state’s highways.

Date: March 10, 2025
District: 4
Contact:  Alexander Tidd
Phone:  (510) 421-3168

Westbound I-80 Express Lane Opens as Temporary HOV Lane Ahead of Formal Launch in Late 2025

Temporary HOV Lane Opened to Traffic on Saturday, March 8

SOLANO COUNTY  – The future westbound Interstate 80 (I-80) express lane running between Vacaville and Fairfield is now temporarily open to High-Occupancy Vehicle (HOV) traffic as of Saturday, March 8.

Roadway construction on the new express lane is ongoing and electronics and hardware for collecting tolls are still being installed. In the meantime, this lane is available to vehicles with two or more people on board weekdays from 5:00 a.m. to 10:00 a.m. and 3:00 p.m. to 7:00 p.m. During non-weekday commute hours, the lane is open to all motorists.

The new temporary HOV lane runs on westbound I-80 from the Interstate 505 interchange in Vacaville to Airbase Parkway in Fairfield.

As work is still in progress, we ask motorists to please be mindful of their speed for the safety of our workers. Caltrans and its transportation partners expect to formally launch the completed express lane by late 2025. At that time, motorists using the new traffic lane will be charged as appropriate.

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/ For 24/7 traffic updates, follow 511.org: https://x.com/511SFBay

Or call 1-800-472-7623 1-800-427-ROAD for state highway conditions statewide.

Date: Feb. 28, 2025
District: 4
Contact:  Alexander Tidd
Phone:  (510) 421-3168

Westbound I-80 Express Lane in Vacaville Slated to Open as Temporary HOV Lane Ahead of Formal Launch in Late 2025

Temporary HOV Lane Scheduled to Open on or around Monday, March 10

SOLANO COUNTY  – Caltrans and partner agencies are tentatively scheduled to open the new westbound Interstate 80 (I-80) express lane running between Vacaville and Fairfield as a temporary HOV lane on or around Monday, March 10.

Roadway construction on what will become a new express lane is ongoing and electronics and hardware for collecting tolls are still being installed. In the meantime, this lane will be available to vehicles with two or more people on board on weekdays from 5:00 a.m. to 10:00 a.m. and 3:00 p.m. to 7:00 p.m.

The new HOV lane runs on westbound I-80 from the Interstate 505 interchange in Vacaville to Airbase Parkway in Fairfield.

As work is still in progress, we ask motorists to please be mindful of their speed for the safety of our workers. We expect to formally launch the completed express lane by late 2025.

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/ For 24/7 traffic updates, follow 511.org: https://x.com/511SFBay

Or call 1-800-472-7623 1-800-427-ROAD for state highway conditions statewide.

Date: Feb. 26, 2025
District: 4
Contact:  Alexander Tidd
Phone:  (510) 421-3168

Single Lane Closures on Highway 12 through Suisun & Fairfield in Early March

SOLANO COUNTY/NORTH VALLEJO – Caltrans will be closing outside and right-hand turn lanes at several intersections along State Route 12 through Fairfield and Suisun City throughout the week of March 3.

These closures will affect SR-12 intersections at Beck Ave. and Pennsylvania Ave. in Fairfield, and Marina Blvd., Sunset Ave./Grizzly Island Rd., and Emperor Dr./Lawler Ranch Pkwy. in Suisun City. Each location’s lane closure will last a full workday.

This work is part of a larger project improving the safety of pedestrian crosswalks across Solano County. The lane closures are necessary to install the foundations for new overhead poles with luminaires.

Real-time traffic updates are always available on Caltrans QuickMap. For 24/7 traffic updates, follow 511.org on X.

Or call 1-800-472-7623  1-800-427-ROAD for state highway conditions statewide.

Date: Feb. 24, 2025
District: 4
Contact:  Alexander Tidd
Phone:  (510) 421-3168

State Route 84 “Real McCoy II Ferry” Out of Service Due to Mechanical Issue

SOLANO COUNTY/NORTH VALLEJO – The State Route 84 (SR-84) “Real McCoy II Ferry” is currently out of service due to mechanical issues with the vessel’s engine.

The ferry has been inspected and experts determined the vessel’s thruster box needs to be replaced. Caltrans estimates the Real McCoy will be out of service through Friday, Feb. 28.

Caltrans regrets any inconvenience this may cause for residents and motorists who use the ferry to access Ryer Island and the Sacramento Delta.

Detour for SR-84 “Real McCoy II Ferry Closure
Residents and motorists can continue using Miner’s Slough Bridge to access or exit Ryer Island. The J-Mack ferry is currently on hold due to high water flow, but is expected to return to service Tuesday, Feb. 25. Caltrans thanks motorists, businesses, and residents for their patience as we work to get the ferries back into service.

For the latest information and schedules, call the Caltrans Ferry Update Line at (510) 622-0120. Motorists can also find additional information on the Caltrans’ Delta Ferries webpage.

For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/ For 24/7 traffic updates, follow 511.org: https://x.com/511SFBay

Or call 1-800-472-7623 1-800-427-ROAD for state highway conditions statewide.