The San Bernardino County supervisors approved a $41.72 million contract Tuesday for Griffith Co. to construct a bridge over the Cajon Wash on the Glen Helen Parkway in the Devore area.
The project calls for a new four-lane bridge over the wash in an effort to enhance commuter connectivity to the existing grade separation that extends across the Union Pacific and Burlington Northern Santa Fe railroad lines.
With contingency and engineering costs added, the project will total an estimated $52 million, according to a county statement. The new Glen Helen bridge is funded primarily through the Federal Highway Bridge Program with local matching funds and revenue from Measure I, which levies a half-cent sales tax on purchases in the county through 2040 to fund transportation improvements.
Supervisors also OK’d an approximately $164,000 amendment to an existing contract with Biggs Cardosa Associates Inc. for additional “construction support services,” according to a county statement.
Work was scheduled to begin Thursday with completion expected in April 2027, county documents show.
The existing bridge will be widened to a total width of about 94 feet, according to the California Environmental Quality Act web portal. The project calls for 20 “cast-in-drilled hole concrete pilings” to be constructed to support the bridge structure, with approximately 16 pilings within the wash and four adjacent to its eastern bank. Driven steel piles will support the bridge’s western abutment, and rock slope protection placed at the bridge abutments aims to mitigate erosion.
Griffith Co. is based in Brea, and Biggs Cardosa is in Orange.
