The Foothill Extension will take the Gold Line from its current terminus in Pasadena to the Azusa/Glendora border. It’s a project funded by Measure R, the half-cent sales tax increase approved by L.A. County voters in 2008.

The Santa Fe Railroad's Super Chief crosses the old bridge over the 210 freeway's eastbound lanes in 1971.
The last station on the Gold Line at present is at Sierra Madre Villa in the middle of the 210 freeway. The old Santa Fe rail right-of-way continues east along the 210 for about a mile. The new bridge will carry the tracks over the 210′s eastbound lanes as the tracks curve south toward downtown Arcadia, where there will be a new station — the old bridge was torn down years ago because of seismic concerns.
The Foothill Extension Construction Authority, the independent agency building the line, is currently selecting a contractor to build the rest of the line. The Authority says the scheduled completion date is 2015.
Here’s the news release about the bridge from the Construction Authority, which we received late Friday:
CONSTRUCTION BEGINS ON I-210 GOLD LINE BRIDGE
After nearly a year of design work, permit approvals and hiring of subcontractors, crews will start work on the I-210 Gold Line Bridge next week. The 584-linear foot bridge crosses over the eastbound lanes of the I-210 Freeway between Baldwin and Santa Anita Avenues, and will facilitate connection between the existing Sierra Madre Villa Station in East Pasadena and the future Arcadia Station. It is the first component of the Metro Gold Line Foothill Extension light rail project from Pasadena to Azusa to move from design to construction.
Over the next few months, crews will clear the center and southern freeway medians, build a 500 foot long temporary retaining wall, and then start work on the massive foundations for the bridge structure. Intermittent late-night closures of the Eastbound I-210 Freeway will be necessary during the year-long bridge construction. The Metro Gold Line Foothill Extension Construction Authority will issue regular construction notices to update the community on bridge construction activities and schedules.
