Connecting America's Communities

Playing a vital role in transportation infrastructure

Southwest Gulf Railroad Company

Connecting businesses to America’s rail network

Jobs & Opportunity Headed to Medina County

Fueling economic growth and hundreds of new jobs for the area

Who We Are

Southwest Gulf Railroad Company (SGRR) is a short line railroad company keeping local communities connected to the national rail network through America’s heartland. We provide local business customers access to the regional, national and global marketplace through low-cost and convenient transportation solutions.

Our Commitment:
Southwest Gulf Railroad Company is committed to providing value to our customers and the communities we serve by operating in a safe, reliable, and environmentally responsible manner.

Incorporated in 2003, SGRR is a subsidiary of Vulcan Materials Company, the nation’s largest producer of construction aggregates and a major producer of other construction materials. An industry leader in safety, health, and environmental stewardship, Vulcan’s coast-to-coast footprint aligns with and serves the nation’s growth centers. Through the company’s extensive logistics network, Vulcan provides materials to build and repair valuable infrastructure such as roads, bridges, residential and commercial buildings, schools, hospitals and places of worship.


In 2008, the U.S. Surface Transportation Board granted Southwest Gulf Railroad Company (SGRR) the authority to build and operate The Medina Line, a 9-mile single-track common carrier railroad near Dunlay, Texas.

The Medina Line will:

  • Operate as a common carrier rail line serving customers located on or near the line.
  • Strategically connect the area to North American markets by tapping into Union Pacific Railroad, the nation’s largest freight railroad connecting the West Coast to the Midwest across America’s heartland.
  • Serve as a catalyst for new jobs and long-term economic opportunity in Medina County and Texas.
  • Generate new tax revenues for vital government services, including road construction and maintenance, schools, and public safety.
  • Provide local businesses with a low-cost and convenient connection to the regional, national and global marketplace.
  • Partner with local business and economic groups as part of to foster  economic development and jobs.

A safe and efficient transportation link, the line’s initial anchor customer will be The Medina Quarry, an existing limestone quarry at the northern end of the line operated by SGRR parent Vulcan Materials Company.

Why Rail?

Restoring connections to America’s communities, short line railroads provide efficient and environmentally friendly transportation services for businesses, employers and communities around the country.


The life-blood of many communities, short lines directly employ nearly 20,000 Americans and create and support countless additional jobs in industries and communities that rely on low-cost efficient freight transportation.


For local businesses, rail means lower costs and expanded market reach through a connection to the national rail network. Communities benefit from short lines through new tax revenues, household incomes and increased economic activity.


Rail improves highway safety and reduces congestion by taking the equivalent of nearly 33 million truck loads off the highways. Railroads are constantly incorporating new technologies to improve rail safety.


America’s railroads are an environmentally sound way to move goods and reduce carbon emissions.


Did you know? One rail car can carry a ton of cargo 436 miles on a single gallon of fuel.