| State: | CO |
| Type: | SH |
| Route: | 15 |
| Map Custom: | yes |
| Map Notes: | SH 15 highlighted in red |
| Length Mi: | 22.834 |
| Length Ref: | [1] |
| Direction A: | North |
| Terminus A: | in Monte Vista |
| Direction B: | East |
| Terminus B: | near La Jara |
| Counties: | Rio Grande, Conejos |
| Previous Type: | SH |
| Previous Route: | 14 |
| Next Type: | SH |
| Next Route: | 16 |
State Highway 15 in the U.S. state of Colorado is a north - south, then east - west, state highway in the San Luis Valley region of Southern Colorado. It connects the two towns of Monte Vista and La Jara. There is a gap in the route.
SH 15 begins at a concurrency between US 285 and US 160. After heading south for about 12miles, at the Rio Grande-Conejos county line, there exists an 8miles gap[1] filled in by Conejos County Route 6.[2] After the gap, SH 15 reappears in Centro and heads east to pass through Capulin, cross over the La Jara Creek, and end at US 285, north of La Jara.
The route was established in the 1920s as a much longer route, but it was gradually cut down to its current length. The route was paved in 1957.[2]