I know that SP was famous for having snow sheds at Donner Pass, and perhaps some other areas. To be truthfull, I never gave it much thought , that other western railroads would have hsd them too. Recently, a book I was reading had a photo of a snowshed on the Milwaukee Road, somewhere in Idaho or Montana. Did all the western railroads have snow sheds at one time or another? How about western shortlines-did some of them utilize snowsheds?
UP: Rock River, Wyo. (concrete, now demolished)
DNW&P/D&SL: Rollins Pass, extensive at summit and short ones at several other locations on the pass.
GN: Marias Pass (still in use)
NP: Stampede Pass, Mullan Pass (very short)
Rio Grande: Soldier Summit (gone very early), Marshall Pass, Cumbres Pass (latter two just at the summits to protect wyes, turnouts, sidings)
DSP&P, Alpine Tunnel, Boreas Pass, Kenosha Pass (none very long)
CP, Rogers Pass (extensive on original line), Kicking Horse Pass, quite a few locations on the Kettle Valley.
SP, Cascade Summit
I’m probably missing quite a few. The notable locations always seemed to me to be Donner Pass, Rollins Pass, Marias Pass, and Rogers Pass. Many of these other locations were very short snowsheds to protect tunnel mouths, wye tail tracks, etc.
S. Hadid
The obvious one that didn’t is the AT&SF. I am not sure if the Western Pacific had Snowsheds either. A variation on the Snowshed is the Rockshed, similar idea but more substantial construction. The Canadian National has no Snowsheds but has several Rocksheds in the Frazier and Thompson River Canyons to keep landslides off the track.
I don’t think WP ever did; snowfall on the WP was never very much. It did have at least one rockshed, at Pulga, which was still there last time I rode through there.
S. Hadid
D.& R.G.W. had a wooden snowshed at Cumbres summit, located on the narrow gauge San Juan extension between Antonito, Colo. and Chama, New Mex. It was more in the nature of a wooden structure built over the wye that was used to turn helper power.
In addition to the currently in use (on BNSF) snowsheds on Marias Pass, the Great Northern also had about 7 miles of snowsheds (in 9 miles of track!) on the old line through Stevens Pass which went up through Wellington (Tye) and the old Cascade Tunnel. This line was abandoned in 1929.
There were also some rocksheds on Chihuahua-Pacific in Mexico.