Alameda Corridor

Client: Alameda Corridor Transportation Authority (ACTA)

Location: Los Angeles and Long Beach, CA

Project cost: $2.5 billion

DMJM Harris, in joint venture, is providing program management, conceptual development, engineering design, and construction management services to ACTA and the Ports of Los Angeles and Long Beach. 

Opened in 2002, the Alameda Corridor is a 20-mile long freight rail “expressway” that links the ports of Los Angeles and Long Beach with a national rail system. A distinct feature of the line is the “Mid-Corridor Trench,” a below-ground, triple-tracked rail line that is 10 miles in length. The separation of freight trains from the surrounding road network has resulted in an increase in both speed and capacity for trains travelling to and from the ports, which in turn has contributed to a reduction in trucks carrying freight on the region’s freeway network. 

The joint venture developed conceptual designs, conducted preliminary engineering, conducted highway and railroad capacity studies, evaluated alternative routes and designs, and prepared environmental reports.

Sustainable elements: the Alameda Corridor reduced idling of cars and trucks at area intersections and has also decreased the number of freight-bearing trucks on area roads.