A facility on the northern part of the island operated by rail contractor Alstom is currently repairing Capitol Corridor cars used by the Amtrak California fleet around the Bay Area for passenger service.

Lombard Yard services such customers as Central Valley Builder's Supply, All Bay Mill & Lumber, Biagi Bros.

The track between Davis and Woodland was built by the California Pacific Railroad and at one time extended as far north as Yuba City/Marysville via Knight's Landing.

In 2009 CFNR repaired the Thomes Creek Bridge in Corning for a connection in Tehama, CA with the Union Pacific Railroad.

Many customers on that end of the line have moved to private trucking companies to transport their goods due to lower prices.

This mainline route was formerly known as Southern Pacific's "West Side Line" and at one time extended from Tracy, California and then south through the West side of the San Joaquin Valley (I-5 corridor) via Patterson, Gustine, Newman, Los Banos, Oxalis and then east to Fresno via Ingle and Kerman.

The Southern Pacific constructed the track from Tracy to Newman (37 miles) and from Los Banos to Armona (near Fresno) in 1891.

Southern Pacific's overnight Owl Limited passenger train (#57/58) operated over this line between San Francisco and Los Angeles into the 1960s.

California Northern would pick up short cuts of cars from Napa Pipe, and assemble the train in Lombard yard, usually filling two tracks.

[3] Currently, California Northern owns twelve locomotives, as several have been sold to other railroad companies, including Union Pacific, Fillmore and Western Railway, Trans Canada Switching, Hudson Bay, Mosaic, Twin Mountain, and San Joaquin Valley Railroad.

In 2009 the railroad began a program to replace their existing fleet with new fuel-efficient locomotives, known as "gensets", or 3GS21B-DE, built by National Railway Equipment.

Like the gensets, the railroad was granted $3.7 million from the Bay Area Air Quality Management District to purchase the locomotives.