Today’s Durango & Silverton Narrow Gauge Railroad has the Denver & Rio Grande Western Railroad to thank for its 45 mile branch of track through some of the most remote and beautiful mountain country in the United States. Replacing a bridge such as 495A built by the Rio Grande is not taken lightly as it […] The post Conserving a National Treasure – Animas River Bridge 495A Replacement Part 2: Planning and Design appeared first on Official Durango & Silverton Narrow Gauge Railroad Train.