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MILW - Bonner Tunnel

Map 

Description 

1909 tunnel on the MILW Pacific Extension. This tunnel was unplanned (hence the 1/2) and was constructed as a result of the now-gone Milltown Dam forcing a small line relocation. It is located between Beavertail Tunnel (#16) and Ninemile Tunnel (#17).

Facts 

Overview
Abandoned tunnel on Chicago, Milwaukee, St. Paul & Pacific Railroad
Location
Missoula County, Montana
Status
Derelict/abandoned
History
Built 1909
Railroad
- Chicago, Milwaukee, St. Paul & Pacific Railroad (MILW; CMStP&P; CMStP)
Design
Tunnel
Dimensions
Total length: 636.0 ft.
Also called
MILW - Tunnel No. 16 1/2
Approximate latitude, longitude
+46.87127, -113.89417   (decimal degrees)
46°52'17" N, 113°53'39" W   (degrees°minutes'seconds")
Approximate UTM coordinates
12/279447/5194925 (zone/easting/northing)
Quadrangle map:
Southeast Missoula
Inventory number
BH 66021 (Bridgehunter.com ID)

Update Log 

  • February 14, 2015: Added by Ian Martin

Sources