I-5/Hasley Canyon Road Interchange Roundabout PR/ED/PS&E
ACT Consulting supported the CH2M HILL team for improvements to the I-5/Hasley Canyon Road interchange in North Los Angeles County. This project greatly increased the capacity of the interchange and local roadways while minimizing impacts to the surrounding properties. The project involved the design of two modern roundabouts and the north-bound and southbound ramps of I-5 at Hasley Canyon Road and the intersection of The Old Road; widening of Hasley Canyon Road and The Old Road to six lanes; associated modifications to the Hasley Canyon Road Overcrossing structure; and drainage, signal, and lighting improvements. Prepared under the direction of project manager Jamal Salman, this project was the first in California to incorporate freeway ramps and local traffic into roundabouts on each side of the interchange.
The interchange improvements we required to be coordinated with other larger corridor efforts along I-10. The PA/ED phase was delivered on an accelerated schedule in order to provide quick relief to the neighboring cities. The project was transitioned quickly into the PS&E phase to capitalize on available funding. This projects has major political implications and required close coordination with SANBAG, Caltrans District 8, FHWA, and the Cities of Loma Linda and San Bernardino, as well as many public stakeholders. Close coordination was required between Caltrans District 7, FHWA, Newhall Land, the City of Santa Clarita, and other stakeholders to ensure the endorsement of the roundabout concept.