I-5 HOV Lane Extension

LSA was retained to prepare an air quality impact analysis and a noise study for the I-5 HOV lane extension project located in the Cities of Dana Point, San Clemente, and San Juan Capistrano, California. Greenhouse gases and potential air quality impacts were analyzed in the air quality impact report along with the recommended mitigation measures. The noise study identified potential noise impacts and evaluated noise abatement measures. The Orange County Transportation Authority, in cooperation with Caltrans, the Cities of Dana Point, San Clemente, and San Juan Capistrano, is proposing to widen I-5 between Avenida Pico and San Juan Creek Road. The project limits on I-5 extend from 0.4 mile south of the Avenida Pico undercrossing to 0.1 mile south of the San Juan Creek Road undercrossing. The proposed project will add one HOV lane in each direction on I-5 throughout the project limits, reestablish existing auxiliary lanes, construct new auxiliary lanes, and improve several existing on-ramps and off-ramps. The study evaluated four alternatives: a No Build Alternative and three Build Alternatives. There are two design options under consideration for reconfiguration of the Avenida Pico interchange, both of which require replacement of the Avenida Pico undercrossing structure.

Clients: Cities of Dana Point, San Clemente, and San Juan Capistrano

Location: Dana Point, San Clemente, and San Juan Capistrano, California