Surveying & Mapping

I-15 / I-215 Devore Interchange Design-Build Project | Devore, CA

SANBAG and Caltrans Partnership


Major Survey Control
Topographic Surveying
Mobile and Terrestrial Laser Scanning
Cadastral Monumentation Survey
Construction Surveying

Goods Movement Improvement

Located at the base of the Cajon Pass in the San Bernardino Mountains, the Interstate 15/Interstate 215 junction is considered one of the worst grade-related bottlenecks in the U.S. It experiences 1,200 daily vehicle hours of delay per day at an annual cost of $3.75 million. Reconfiguring this interchange and adjacent local interchanges will reduce traffic delays and improve the flow of goods through the region including to and from freight facilities in the Los Angeles Basin.

Psomas is providing all surveying and mapping for the URS/Atkinson team for this design-build project.

Improvements include adding one northbound lane and one southbound lane on I-15 between I-215 and Glen Helen Parkway and providing a continuous set of four lanes in each direction between State Route 60 and U.S. Highway 395. Additionally, new truck bypass lanes will be created to eliminate the need for slower-moving trucks to weave across faster-moving automobile traffic to enter the right lanes as they pass through the interchange.