Project Details

Lead JV Partner
North San Diego County Transit District
$224 million
September 2004
Start Date
December 2007
Completion Date

Building the Sprinter Mainline

North San Diego County Transit District (NCTD) awarded the $224 million contract to a joint venture team led by Flatiron to convert 22-miles of existing active freight rail to a commuter line. The commuter line has 15 stations and runs east/west along the Highway 78 corridor between Oceanside, Vista, San Marcos, and Escondido, California.

Construction included a new ballasted track with new ties, adjusted alignment for faster travel speeds, new at-grade crossings, double track for passing commuter trains, signaling systems, bridge and culvert structures, 15 new passenger station platforms, communication and controls systems, retaining walls, and landscaping.

A total of 455 trains run each week on this 22-mile route with an average of 8,300 weekday ridership. According to the NCTD, the new rail line offers alternative transportation to one of the region’s most heavily traveled corridors and provides additional travel freedom to the area’s residents. Reaching speeds of 50 mph, the Sprinter reduces traffic and pollution in North San Diego County.

22 miles of new passenger rail within an existing corridor

New signals, ballasted track, station platforms, bridges and control systems

Projected 64 trips per day with 16,000 daily boardings by 2020

American Public Works Association
Project of the Year 2008
Associated General Contractors of California
Excellence in Partnering Finalist 2009
National Railroad Construction and Maintenance Association
Silver Award for Safe Contractor of the Year 2010