Granite wins the first construction contract in Metrolink's SCORE rail program

The bundled Marengo and Rancho Cucamonga siding extension projects are scheduled to start in January 2027 and finish in July 2028, Granite said in a release. A siding is a second track where trains can pass each other instead of waiting on a single line. Granite said the work is meant to add regional rail capacity for the Olympic and Paralympic Games in Los Angeles in 2028 and after them.

In Rancho Cucamonga, the siding north of the main track grows by 4,600 feet to a total of 15,600 feet, according to Metrolink's project page. The Hellman Avenue crossing goes from single to double track and the Archibald Avenue crossing from double to triple track. The scope also includes a relocated control point at the west end with signal work, plus culvert extensions. Metrolink says the crossing upgrades will make the corridor ready for quiet zones, which the city would have to apply for.

SCORE is Metrolink's $10 billion capital program to upgrade tracks, signals, stations and grade crossings, with several projects due before the 2028 Games. Granite regional vice president Bill Moore said winning the first SCORE procurement puts the company in position for later packages. Granite has built rail projects for the Riverside County Transportation Commission before and will include the award in its fourth-quarter 2026 committed and awarded projects.