Contra Costa Transportation Authority joins City of Brentwood and County of Contra Costa to celebrate the opening of the Mokelumne Bicycle and Pedestrian Overcrossing

Officials joined by dozens of cyclists and pedestrians to make the inaugural walk over new bridge

For Immediate Release

Wednesday, March 20, 2024

Contact Information

Lindy Johnson, Director of External Affairs
Contra Costa Transportation Authority

Issued By


BRENTWOOD, CA – Today, the Contra Costa Transportation Authority (Authority) joined City of Brentwood, and County of Contra Costa officials to cut the ribbon and officially open the recently completed Mokelumne Bicycle and Pedestrian Overcrossing to the public. Dozens of eagerly awaiting bicyclists and pedestrians joined the elected officials to make the inaugural bike/walk on the overcrossing. The bridge now provides safe access to cyclists and pedestrians for commuting and recreational travel and is part of the Mokelumne Trail.

The 850-foot bridge structure includes a wider trail-width of 16 feet to accommodate bicyclists and pedestrians using the trail or accessing a potential future transit station. The bridge also meets Americans with Disabilities Act (ADA) standards to support use by all community members.

“The opening of the Mokelumne Pedestrian Overcrossing marks a significant milestone for alternative and innovative transportation in Contra Costa County,” said CCTA Board Chair Newell Arnerich. “The bridge was designed for the future in mind: access to future development in Brentwood as well as creating a wider pathway to someday accommodate many forms of environmentally friendly travel, including autonomous shuttle vehicles.”

The overcrossing also provides a connection to the planned Innovation Center at Brentwood, a 200+ acre parcel that city officials have zoned for employer and development partners to create a workplace community.

“The City of Brentwood is proud to have partnered with CCTA on this important project, which brings greater connectivity for bicyclists and pedestrians in Eastern Contra Costa County. The project complements the City’s emphasis on innovation, safety and being financially wise—no city funds were used to construct the overcrossing,” said Mayor Joel Bryant.

The cost to design and build the bridge was approximately $13 million, with funding provided through Measure J taxpayer dollars, the State Route 4 Bypass Authority, and Bay Area Toll Authority (BATA) bridge toll funds.

“Closing the gap between the Mokelumne Trail by constructing a bridge to span Highway 4 was a priority project for CCTA as the overcrossing allows safe access to cyclists and pedestrians for commuting and recreational travel,” said CCTA Executive Director Tim Haile. “This project represents CCTA’s commitment to improving mobility and furthering safe and accessible transportation for all.”

About the Contra Costa Transportation Authority:

The Contra Costa Transportation Authority (CCTA) is a public agency formed by Contra Costa voters in 1988 to manage the county’s transportation sales tax program and oversee countywide transportation planning efforts. With a staff of 23 people managing a multi-billion-dollar suite of projects and programs, CCTA is responsible for planning, funding, and delivering critical transportation infrastructure projects and programs that connect our communities, foster a strong economy, increase sustainability, and safely and efficiently get people where they need to go. CCTA also serves as the county’s designated Congestion Management Agency, responsible for putting programs in place to keep traffic levels manageable.