Union Pacific Tunnels
Index For This Page
This page was last updated on September 20, 2024.
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Overview
Tunnels between Cheyenne and Ogden, UP Wyoming Division
Locations And Approximate Lengths
| Tunnel # | Tunnel | Mile-post East Portal |
Mile-post West Portal |
Approx length to +/-105 feet * |
| 1 | Hermosa Twin Tunnels | 546.50 | 546.85 | 1,848.0 |
| 2 | Aspen (1901 original), Track #1 | 902.01 | 903.22 | 6,388.8 |
| 3 | Altamont, Track #2 | 901.75 | 903.02 | 6,705.6 |
| 4 | Near Wahsatch, Track #2 | 930.13 | 930.34 | 1,108.8 |
| 5 | Curvo, Track #1 | 931.27 | 931.40 | 686.4 |
| 6 | Curvo, Track #2 | 931.12 | 931.35 | 1,214.4 |
| 7 | Castle Rock | 935.53 | 935.57 | 211.2 |
| 8 | Taggart Twin Tunnels | 963.21 | ??? | 510 |
| 9 | Mountain Green Twin Tunnels | 964.01 | ??? | 300 |
| 10 | Sheepshead Rock Tunnel, Track #2 | 982.09 | ??? | 239 |
* Lengths of tunnels are approximate being calculated from the beginning and ending mileposts shown per "Wyoming Division Main Line," (Track Profile Charts), "Alignment and Profile Corrected for May 1, 1978."
Thus the error may be as much as +/- 0.01 mile on each end, and one must accept the possibility that a short and a long measurement on the two ends together may add as twice the possible error of 0.01 mile = 2 x 52.8 feet for a total possible error of +/- 105 feet.
Lengths of the last three are scaled measurements of satellite photos, because UP Profile Charts only give the E Portal mileposts, and not the W Portal.
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