Rio Valley Switching Company

The Rio Valley Switching Company is a short-line railroad headquartered in McAllen, Texas.
RVSC operates four lines, all leased from Union Pacific:

A 41-mile line from an interchange with Union Pacific at Harlingen, Texas to an interchange with Border Pacific Railroad at Mission, Texas
An 8.1-mile branch from Mission to Hidalgo, Texas
A 12.8-mile branch from McAllen to Edinburg, Texas
An 11.4-mile branch from Harlingen to Rogers Lacy, Texas

RVSC traffic includes paper, agricultural products, lumber, bulk plastics, steel, scrap metals, cottonseed, corn sweetener, lime, cement, canned goods, frozen food, and aggregates.
RVSC provides South Texas and Mexican border haulage and cross-dock services through its sister company, Border Transload & Transfer, Inc.