California's freeways and major thoroughfares are among the most congested in the nation. With 50 million people expected to live in California by 2055, we need to be innovative in how drivers move across the state. According to TRIP, a national transportation research group, traffic congestion costs California residents a total of $28 billion each year in the form of lost time and wasted fuel.

SB 1 created the Solutions for Congested Corridors Program (SCCP), providing $250 million annually to multimodal corridor plans that make performance improvements along the state's busiest highways. SB 1 also provides funding for additional programs that help address congestion through their investments.



Congestion costs the average California driver $887-1711 a year in lost time and wasted fuel

$250 million annually for solutions for congested corridors

$200 million for community solutions to ease congestions on both state and local roads

90% of congestion relieving traffic management systems will be in good working order by 2027


The Solutions for Congested Corridors Program (SCCP) provides funding to achieve a balanced set of transportation, environmental, and community access improvements to reduce congestion throughout the state. These projects are multimodal corridor plans that implement specific transportation performance improvements by providing more transportation choices while preserving the character of local communities and creating opportunities for neighborhood enhancement.

Eligible project elements within the corridor plans may include improvements to state highways, local streets and roads, rail facilities, public transit facilities, bicycle and pedestrian facilities, and restoration or preservation work that protects critical local habitat or open space. This program also provides support for capacity increasing projects on the state highway system like high-occupancy vehicle lanes, managed lanes, and other non-general purpose lane improvements for safety and/or operational improvements for all modes of travel.

The goals for these projects include:

  • Providing more transportation choices for residents, commuters and visitors
  • Improve traffic flow while improving air quality and taking on environmental/health challenges
  • Caltrans and local or regional partners working together to find wide-reaching solutions

Examples of projects that could be funded include:

  • The North Coast Corridor improvements along I-5 and the parallel rail corridor in the County of San Diego.
  • The Route 91 and Metrolink rail corridor improvements in the County of Riverside.
  • Emerging solutions for the Highway 101 and Caltrain corridor connecting Silicon Valley with San Francisco.
  • Multimodal approaches for the Highway 101 and SMART rail corridor between the Counties of Marin and Sonoma.
  • Comprehensive solutions for the I-405 Corridor in the County of Los Angeles.

Projects selected include:

  • San Mateo and Santa Clara Counties: $233.2 million to build 22 miles of new, managed lanes in San Mateo County and convert approximately nine miles of carpool lanes to express lanes in Santa Clara County. This will reduce congestion, increase reliability, improve safety and air quality, and will allow for faster travel times and more transit options. This project is also receiving $20 million in Local Partnership Competitive funding.
  • Sacramento County: $110.3 million to build seven miles of carpool lanes on US 50 from Interstate 5 to just east of Watt Avenue, and expand light rail service from Sunrise Blvd. to Downtown Folsom.

Funding: Nominations by local agencies and the state.

Complete list of projects

For more information visit the CTC's Solutions for Congested Corridors Program page.

Caltrans Traffic Management Center

Click for larger image.


To move people, vehicles and goods quickly, reliably and safely, traffic managers look towards technology to better manage the demand and harmonize traffic flow.

One of Caltrans' strategies to address congestion includes active traffic management, utilizing technology that helps the existing freeway system work smarter and more efficiently to promote safe and consistent traffic flow.

Caltrans uses technology to better manage urban congestion and has invested in more than 50,000 traffic devices that relay travel information to Caltrans and/or help the Department monitor traffic.

  • SB 1 provides funding to ensure we can bring 90 percent of these traffic management systems to good working order by 2027.
  • SB 1 dollars will pay for repairs to congestion-reducing technology such as ramp meters, traffic loops and electronic highway message signs.


  • Supports the investment that local communities have made in their region through voter-approved transportation tax measures through matching funds.
  • Projects will include road maintenance and rehabilitation purposes and other transportation infrastructure improvements.
  • Funds are allocated by the CTC with 50% available by formula and 50% available on a competitive basis, to ensure smaller jurisdictions are able to compete.

In January 2018, the CTC approved 57 Local Partnership Program projects including:

  • I-5 Improvement Project from State Route 73 to Oso Parkway in Orange County: $18.24 million

    Extending from the cities of Laguna Niguel, Mission Viejo and Laguna Hills, this project adds one general purpose lane in each direction, auxiliary lanes where needed, as well as the reconstruction of interchanges at Avery Parkway. This project will directly enhance mobility and maximize the productivity of the local transportation system.

  • City of Corona-Temescal Canyon Road Gap Closure in Riverside County: $7.3 million

    Project will widen Temescal Canyon Road from two to four lanes including but not limited to curb and gutter and curb ramps in two different segments.

  • Green Line Extension in Los Angeles County: $19.75 million

    Project will continue environmental study and preliminary engineering of a light rail transit line extension from the city of Redondo Beach to the city of Torrance. The project would provide direct connections to regional destinations, improving accessibility to alternate modes of transportation for residents and communities in the South Bay area.

  • City of Clovis-Willow Avenue Street Improvements Project in Fresno County: $1.04 million for Right of Way and $3.5 million for construction.

    This project will entail a large reconstruction of Willow Avenue from Shepherd to Copper Avenues. Work includes constructing additional lanes, median landscape and irrigation, concrete curbs and gutters, sidewalk, traffic signal, striping and signage.