I-15/I-215 Interchange Reconstruction

The junction of I-15/I-215 near Devore in San Bernardino County, California, is one of worst performing interchanges in the Inland Empire.  Travel through the Cajon Pass is one of only three routes into/out of Southern California to the north through the San Bernardino/San Gabriel Mountains, and delays are common. Today, 160,000 vehicles per day pass through this intersection; in 2040, the estimate is 379,000 vehicles per day. Reconstruction of this interchange is the highest priority of the San Bernardino Associated Governments (SANBAG). Work will include creating a truck by-pass connector to separate truck traffic; adding a lane in each direction; eliminating weaving by standardizing on-off ramps and designation of I-15 as main movement (southbound); and reconnecting Cajon Boulevard (Historic Route 66) to provide local circulation and an alternate route for emergency vehicles. LSA is preparing the final environmental documents for this project. Critical issues include impacts to endangered species and waters of the United States, as well as effects on a segment of historic U.S. Route 66.  Construction cost is estimated at $324 million.

Client: SANBAG

Location: Devore, San Bernardino County, California