Alamo Gulf Coast Railroad

The Alamo Gulf Coast Railroad, reporting mark AGCR, is a short-line railroad headquartered in San Antonio, Texas, that began operating in 1996. It is a subsidiary of Martin Marietta Materials and runs about 6.75 miles of track inside the company Beckmann Quarry, where it moves limestone and aggregates to assemble trains that the Union Pacific Railroad hauls away. It counts as a railroad rather than a plant railway because it once leased the Union Pacific Camp Stanley Industrial Lead and served two lumberyards near Camp Bullis Road. It connects to the Union Pacific Kerrville Subdivision and operates four diesel locomotives, including EMD SD40 and SD40-2 units.