The Robert I. Schroder Overcrossing provides transit commuters and the users of the 33-mile-long, multi-use Iron Horse Trail safe passage across one of the busiest thoroughfares in the San Francisco Bay Area's Contra Costa County. The bridge is the centerpiece of a transit village consisting of a commuter railway station and a high-density residential and commercial development. The final steel-arch bridge design comes to life at night with a lighting design using sustainable LED fixtures, says the general contractor, Robert A. Bothman Inc.