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MRL - Mullan Tunnel

Photo 

West Portal

Photo taken by Kjmoss1

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

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BH Photo #338033

Map 

Description 

Tunnel at the summit of the NP route over Mullan Pass. Originally 3879', it was shorted by ~400 feet at the west end as part of an enlargement project in 2009.

Facts 

Overview
Bridge over Mullan Pass/Continental Divide on Montana Rail Link
Location
Lewis and Clark County, Montana, and Powell County, Montana
Status
Open to traffic
History
Built 1883, enlarged and shortened 2009-10
Railroads
- BNSF Railway (BNSF)
- Burlington Northern Railroad (BN)
- Montana Rail Link (MRL)
- Northern Pacific Railroad (NP)
Design
Tunnel
Dimensions
Total length: 3,496.0 ft. (0.7 mi.)
Also called
NP - Mullan Tunnel
Approximate latitude, longitude
+46.63688, -112.30703   (decimal degrees)
46°38'13" N, 112°18'25" W   (degrees°minutes'seconds")
Approximate UTM coordinates
12/399961/5165643 (zone/easting/northing)
Quadrangle map:
Greenhorn Mountain
Elevation
5566 ft. above sea level
Inventory number
BH 66038 (Bridgehunter.com ID)

Update Log 

  • September 25, 2015: New photo from Luke
  • February 14, 2015: Added by Ian Martin

Sources 

  • Luke
  • Ian Martin