Solano County Quarterly Caltrans Update

Safety first – Cultivate excellence – Enhance and connect the multimodal transportation network – Strengthen stewardship and drive efficiency - Lead climate action - Advance equity and livability in all communities


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Welcome back to the SECOND Solano County Caltrans E-Newsletter!

Our goal is to provide you with the status, resources, content, data and links to various information related to Caltrans work in Solano County.

Solano County holds a unique and cherished position in the Bay Area and California’s diverse landscape, combining rich history with promising potential. Blessed with agricultural lands, scenic landscapes, and multiple recreational areas. It is located between Sacramento and the San Francisco Bay Area, it also benefits economically from its proximity to these thriving economic centers. The county's seven cities and surrounding areas offer residents a variety of lifestyle options, from urban waterfronts to serene rural settings and laid-back suburban neighborhoods.

Future transportation projects are pivotal to Solano County's continued growth and prosperity. These infrastructure improvements support the county's diverse lifestyle offerings by making travel easier and more reliable, ensuring that both urban and rural areas remain accessible and appealing. Through these strategic transportation upgrades, Solano County is poised to contunie its economic advantages and enhance the well-being of its communities.

What's Happening Around Town?



Interstate 80 Logo

🦺 I-80 Express Lane Project

Where: Between Red Top Road, Fairfield and Leisure Town Road, Vacaville

When: Finishing up by Fall 2025

Why: New express lanes mean less traffic and faster commutes! Imagine zipping along I-80 with ease on your way back and from Sacramento or a Lake Tahoe Road trip. This project is over 50% complete with remaining work involving roadway and bridge widening, new retaining walls, soundwalls, electrical work, barriers, drainage work, overhead sign installation, planting, new paving, and striping. The construction work is being performed during the day and night under lane closures. The Express lanes are estimated to be operational by Fall 2025.


🦺 State Route 29 Complete Streets Project

Where: SR-29/Sonoma Blvd, Vallejo

When: Groundbreaking Summer 2025

Why: Complete Streets projects prioritize the safety of all road users by ensuring that streets are designed for pedestrians, cyclists, and transit riders. By encouraging active transportation and reducing traffic congestion, these projects help lower environmental impact and improve community livability and economic growth by creating attractive, accessible, and sustainable streetscapes.


🦺 Fairground Diamond Interchange Project

Where: SR-37/Fairgrounds Dr in Vallejo

When: Target groundbreaking is Fall 2024

Why: This project will alleviate current and future traffic congestion and enhance safety for all transportation modes, including pedestrians, bicycles, and scooters. The project aims to improve mobility equity and provide better access to major attractions such as Six Flags, upcoming Solano development, and local and regional bus services. These improvements will benefit commuters traveling to Sacramento, the San Francisco Bay Area, Napa County, and all within the city of Vallejo.


🦺 State Route 12 Segment 1 Construction

Where: SR-12, from Suisun City to Rio Vista

When: Estimated completion by November 2024

Why: This project addresses safety concerns, ride quality, rehabilitate and extend the pavement service life of the pavement.


🦺 State Route 113 Segment 1 Rehabilitation

Where: SR-113, Dixon

When: Currently in the environmental phase.

Why: This project will focus on necessary upgrades to improve road conditions and ensure long-term reliability.

Current 2024 Solano County Maintenance Highlights Information Graphic

Solano County Newsletter Collage of ImagesTHANK YOU!!!

To all Residents of Solano, Sonoma & Napa Counties,

We would like to extend our heartfelt gratitude to the communities impacted by the recent State Route 37 Pavement Project. Your patience and cooperation during the series of full weekend closures and detours were invaluable as Caltrans prioritized safety and undertook these much-needed repairs.

The completion of the pavement repair work on SR-37has ensured a safer and smoother driving experience for all. These improvements were critical due to the high traffic volume and the need to maintain our infrastructure to the highest standards.

The work included replacing deteriorated pavement and much needed maintenance on the route.

We are pleased to report that the project was completed smoothly and safely, all thanks to the excellent communication and collaboration between the local business, local agencies, our workers, and you, the communities who use this route as part of your daily lives. This teamwork ensured the safety of everyone involved and significantly minimized disruptions. By doing the work during the weekends, Caltrans was able to defer over 30 days of nightly closures and weekday disruptions for commuters. Your cooperation truly helped complete this project efficiently and safely, ensuring that SR-37 remains are liable and safe route for everyone.

The SR-37 paving project was part of a broader effort to address chronic traffic congestion, improve resilience against flooding and sea level rise, and to provide better connections between jobs and homes for our communities. Future improvements will continue to enhance public access, create safer mobility options for bicycles and pedestrians, and adapt the roadway to environmental changes!

Thank you,

Visit our webpage to see photographs and videos of work that took to complete this project:
For more details on future improvements, please visit our project webpage at Resilient SR-37

The Solano County newsletter will be distributed on a quarterly schedule.

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Solano County Public Information Officers

Hector Chinchilla

Vince Jacala

General Information
(510) 286-4444

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