Alameda Corridor-East Construction Authority
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ACE Project Accomplishments


  • Jump Start safety and mobility improvements completed at 40 grade crossings in the Cities of Diamond Bar, El Monte, Industry, Montebello, Pico Rivera, Pomona, Rosemead, San Gabriel, Temple City, Walnut, West Covina and unincorporated Los Angeles County.
  • Completed construction of four-quadrant gates at five railroad crossings in Pomona.
  • Nine grade separations completed at Nogales Street (Industry/West Covina), Reservoir Street (Pomona), Ramona Boulevard (El Monte), East End Avenue (Pomona), Brea Canyon Road (Diamond Bar/Industry), Sunset Avenue (Industry), Orange Avenue (Industry), Baldwin Avenue (El Monte) and Nogales Street (Industry/LA County).
  • Seven grade separation projects under construction at San Gabriel Trench (bridges at four railroad crossings), Puente Avenue (Industry/LA County), Fairway Drive (Industry/LA County) and Fullerton Road (Industry/LA County).
  • Three grade separation projects in design at Durfee Avenue (Pico Rivera), Montebello Corridor (Montebello Boulevard) and Turnbull Canyon Road (City of Industry/LA County).
  • At-grade crossing safety improvements planned at five crossings in Pomona.


  • Total funds committed: $1.695 billion

  • Total project cost estimate (crossing safety improvements and grade separations): $1.754 billion

Regional Benefits

  • Enhance rail crossing safety by eliminating collisions and delays for emergency responders, motorists and pedestrians

  • Reduce vehicle emissions from idling cars and trucks waiting for trains to pass

  • Eliminate crossing congestion and vehicle delay at the busiest crossings

  • Mitigate impacts of growth in trade transported by train along the Alameda Corridor-East Trade Corridor transcontinental rail network in Southern California, which carries about 60% of the containers that arrive at the San Pedro Bay ports, the busiest in the nation

  • Create 26,000 jobs over multiple years of construction

  • Eliminate train horns and gate alarms


  • Achieved 18% disadvantaged business enterprise participation.

  • Continuing Caltrans & MTA audits have resulted in only minor findings.

  • Toll-free Project Help Line, (888) ACE-1426, operating in three languages.

  • 25,000 ACE student safety kits distributed to schools near construction sites.