Military Highway of the Lower Rio Grande Valley
Mercedes, Hidalgo County, Texas
Marker Inscription
Plains Indians made trails near the banks of the rio Grande that were used by Spanish explorers in the 18th century. Early settlers built a road close to the river bank connecting their ranches. Later called the Military Road, it ran from Brownsville to Laredo, linking frontier forts and stagecoach and mail lines. An inland route for cotton shipping during the Civil War, parts of it also were used for cattle drives. It served as the military telegraph road between Forts Brown and McIntosh in the 1870s. Paved by the 1940s, the highway is a significant part of the region's history. (1997)
Erected by Texas Historical Commission
The Story
This route began as trails worn by Plains Indians along the Rio Grande and followed by Spanish explorers in the 18th century, later linked into a road connecting riverside ranches. As the Military Road it ran from Brownsville to Laredo, tying together frontier forts, stagecoach and mail lines; it carried Confederate cotton inland during the Civil War, served cattle drives, and became the military telegraph road between Forts Brown and McIntosh in the 1870s. Paved by the 1940s, it remained a spine of Valley life across centuries.
Why it matters
Few corridors compress so much of the borderland's history—Native trails, Spanish exploration, frontier defense, and Civil War trade—into a single road.
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Themes & tags
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