The San Luis Southern Railway Trestle, in

Costilla County, Colorado Costilla County (Spanish for "rib") is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 3,499. The county seat is San Luis, the oldest continuously occupied town in Colorado. History On July 8, 1694, ...

near

Blanca, Colorado The Town of Blanca is a Statutory Town located in Costilla County, Colorado, United States. The town population was 322 at the 2020 census. Blanca is located in the enormous San Luis Valley. History The town, named for Blanca Peak, was founded ...

, was built in 1910. It was listed on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

in 2004. It is a railroad

trestle ATLAS-I (Air Force Weapons Lab Transmission-Line Aircraft Simulator), better known as Trestle, was a unique electromagnetic pulse (EMP) generation and testing apparatus built between 1972 and 1980 during the Cold War at Sandia National Laborato ...

built by the Southern San Luis Valley Railroad. It is a long structure spanning

Trinchera Creek Trinchera Creek is a tributary of the Rio Grande in Costilla County, Colorado in the United States. It flows west from a source in the Sangre de Cristo Mountains to a confluence with the Rio Grande. It is spanned by the San Luis Southern Railwa ...

's Rattlesnake Gulch (or Rattlesnake Canyon). With

References

External links

Trestle bridges in the United States National Register of Historic Places in Costilla County, Colorado Buildings and structures completed in 1910 {{Colorado-NRHP-stub