Hot Springs/Cabrillo Roundabout

KAI conducted a peer review of a proposed roundabout near US 101 in Santa Barbara, California at the junction of Cabrillo Boulevard, Old Coast Highway, Coast Village Highway, and Hot Springs Road. The proposed roundabout replaced an existing pair of unsignalized ‘T’ intersections. KAI evaluated intersection operations; horizontal and vertical alignments; design speed; speed consistency; pedestrian, bicycle, and transit treatments; and basic channelization. Based on KAI’s initial review, SBCAG and the City of Santa Barbara determined it was necessary to redesign the roundabout. KAI developed a revised conceptual design based on the operational analysis, established right-of-way constraints, and project goals. KAI then assisted the project team with the successful development of a revised final design.