Tuesday, October 29, 2024

1884,1896+1945 MRL/Northern Pacific Bozeman Tunnel near Muir, MT

East Portal: (Satellite)
West Portal: (Satellite)

Steven J. Brown posted
Boeing 737 fuselage westbound on the Montana Rail Link entering the Bozeman Tunnel on Bozeman Pass at Muir, Montana - October 14, 2002.

1951/52 Bozeman Pass Quad @ 62,500

BozemanMagazine
The first train went through the 3,610' (1,100m, 0.7mile) long tunnel on Jan 20, 1884. The tunnel was originally lined with wood, but it burned in 1895. While trains used a temporary track over the mountain, "the walls were formed from rough concrete and the ceiling arch with thick brick." On Jul 28, 1945, NP switched the tracks to a new tunnel that was 18' (5.5m) wide and 24' (7.3m) tall.

Gallatin History Museum posted
Construction of the new Northern Pacific Railroad Muir Tunnel on Bozeman Pass, 1944.

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