December 19th, 1882, Denver & Rio Grande reaches Utah border. Because the D&RG had no charter to operate in Utah, William Palmer incorporated the mileage in that state separately as the Denver & Rio Grande Western Railway.
Jim- Where did the Rio Grande Western RR fit into this picture? It's always been a bit confusing to me. Boxcab E50
Denver: Starting point Rio Grande: Build south to the Rio Grande River then on to points south Western: Build west from Denver