Biggs Cardosa has provided project management and structural engineering to the Los Angeles County Metropolitan Transportation Authority (Metro) and coordinated a team of subconsultants for the Rosecrans/Marquardt Grade Separation Project, which improved the safety and track flow of the intersection. Located in the City of Santa Fe Springs, the Rosecrans/Marquardt grade crossing is traversed by more than 112 freight and passenger trains and 45,000 vehicles in a 24-hour period. With such heavy through traffic, this intersection has been identified by the California Public Utilities Commission (CPUC) as the most hazardous grade crossing in the state. This grade separation significantly improved safety, eliminated delays, and enhanced the environment. Biggs Cardosa also provided funding assistance and supported Metro in obtaining a $15 million TIGER grant from the U.S. Department of Transportation. This project was awarded the 2025 ACEC California Engineering Excellence Honor Award in the Transportation Category.
