title: List of tunnels documented by the Historic American Engineering Record in Colorado
text: # List of tunnels documented by the Historic American Engineering Record in Colorado
  
  This is a list of tunnels documented by the Historic American Engineering Record in the U.S. state of Colorado.
  
  ## Tunnels
  
  | Survey No. | Name (as assigned by HAER) | Built | Documented | Carries | Crosses | Location | County | Coordinates |
  | - | - | - | - | - | - | - | - | - |
  | CO-4-A | Montezuma Valley Irrigation Company System, Tunnel | 1885 | 1981 | Montezuma Valley Irrigation Company canal | Dolores Divide | Dolores | Montezuma | |
  | CO-29 | Rim Rock Drive | 1937 | 1994 | Rim Rock Drive | Colorado National Monument | Fruita | Mesa | 39°06′48″N 108°44′08″W﻿ / ﻿39.11333°N 108.73556°W﻿ / 39.11333; -108.73556﻿ (Rim Rock Drive) |
  | CO-80 | Prater-Morefield Tunnel | | 1993 | Mesa Verde National Park road | Prater Ridge | Cortez | Montezuma | 37°17′06″N 108°25′08″W﻿ / ﻿37.28500°N 108.41889°W﻿ / 37.28500; -108.41889﻿ (Prater-Morefield Tunnel) |
  | CO-95 | Uncompahgre Project, Gunnison Tunnel | 1909 | 1973 | Uncompahgre Project canal | Vernal Mesa | Montrose | Montrose | 38°29′02″N 107°44′38″W﻿ / ﻿38.48389°N 107.74389°W﻿ / 38.48389; -107.74389﻿ (Uncompahgre Project, Gunnison Tunnel) |
  | CO-101 | Twin Tunnels | 1961 | 2012 | I-70 | Clear Creek Canyon | Idaho Springs | Clear Creek | 39°44′42″N 105°28′25″W﻿ / ﻿39.74500°N 105.47361°W﻿ / 39.74500; -105.47361﻿ (Twin Tunnels) |
  