In 2000, Hazard Construction Company added a single westbound lane on SR 52 from SR 163 to I-805, a distance of 2 miles , at a cost of $1.7 million (about $ in US-GDP dollars).US-GDP In 2006, the Metropolitan Transit System, in cooperation with the San Diego Association of Governments (SANDAG), Caltrans, and the California Highway Patrol, began a pilot program to run transit buses along the shoulders of SR 52 between Kearny Villa Road and I-805.