Project Overview
The South Bay Expressway (SBX) is a 12.5-mile, tolled extension of State Route 125 (SR 125) in San Diego County, CA, running from SR-54 southward to Otay Mesa, just north of the Mexican border. The SBX is the easternmost of the region's three north-south highway corridors and is located roughly 10 miles inland from the Pacific coast near the Laguna Mountains. The SBX also connects the only border crossing in the San Diego area serving commercial vehicles to the regional freeway network. |
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The southern 9.3-mile portion of the SBX opened in 2007 and was originally implemented under a long-term public-private partnership (P3) concession by a special purpose entity called California Transportation Ventures (CTV). The remaining 3.2-mile link to the existing freeway network at the northern end of the corridor-known as the "Gap and Connector"-was publicly funded and built in conjunction with the construction of the private toll road. In 2011, the San Diego Association of Governments (SANDAG)-the metropolitan planning organization and transit agency, and toll operator for the San Diego region-purchased the SBX from CTV following its restructuring in bankruptcy, and the full facility is now under public control.