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Lewis and Clark County

Montana
Abandoned Dearborn River Bridge   [Map]
Abandoned pratt through truss bridge over Dearborn River on Road
Abandoned
BNSF - Little Prickly Pear Creek Bridge   [Map · Street View]
Pony truss bridge over Little Prickly Pear Creek on Railroad
Open to traffic
Craig Bridge   [Map · Street View]
A three-span through truss bridge, formerly over the Missouri River at Craig, is now relocated and sitting at the old State Nursery grounds awaiting to be reassembled as a pedestrian bridge for a park.
Awaiting reconstruction at the old State Nursery grounds near Helena
Built 1902; replaced and relocated in 2006
Dearborn River High Bridge   [Map]
Deck truss bridge over Dearborn River on CR 300
Open to traffic
Built 1897 by the King Bridge Co.; rehabilitated 2003
Elk Creek Bridge   [Map]
Through truss bridge over Elk Creek on CR 309 in Augusta
Open to traffic
Built 1914
Elk Creek Bridge   [Map]
Pony truss bridge over Elk Creek on CR 316
Open to traffic
Built 1915
Elk Creek CR 416 Bridge   [Map]
Lost pony truss bridge over Elk Creek on CR 416
No longer exists
Built 1915; replaced 2002
Flat Creek Bridge   [Map]
Pony truss bridge over Flat Creek on CR 320
Open to traffic
Built 1901
Little Prickly Pear Creek Bridge   [Map]
Through truss bridge over Little Prickly Pear Creek on CR 005
Open to traffic
Built 1905
Little Prickly Pear Creek Bridge   [Map]
Lost pony truss bridge over Little Prickly Pear Creek on CR 233
No longer exists
Built 1897; replaced 2001
Morelli Bridge   [Map]
Timber stringer bridge over Benton Ave on Howie Street
Open to traffic
Built 1881; rehabilitated 1974
MRL - Mullan Tunnel   [Map]
Bridge over Mullan Pass/Continental Divide on Montana Rail Link
Open to traffic
Built 1883, enlarged and shortened 2009-10
North Fork Sun River Bridge
Pony truss bridge over North Fork Sun River on FDR 8983
Open to traffic
Built 1927
North Fork Sun River Bridge   [Map]
Pony truss bridge over North Fork Sun River on Castle Reef Road
Open to traffic
Built 1916
NP - Iron Ridge Tunnel   [Map]
Lost Tunnel on Northern Pacific Railroad
Bypassed and collapsed
Old Eberl Lane Bridge   [Map · Street View]
Pony truss bridge over Elk Creek on abandoned portion of Eberl Lane
Closed to all traffic
Old US 287 Bridge   [Map · Street View]
Abandoned steel stringer bridge over an unnamed creek on an abandoned alignment of US 287/I-15
Derelict/abandoned
Prickly Pear Creek Bridge   [Map]
Pony truss bridge over Prickly Pear Creek on Trail
Open to traffic
Ten Mile Creek Bridge   [Map · Street View]
Pony truss bridge over Ten Mile Creek on Williams Street in Helena West Side
Open to traffic
Built 1894
Wolf Creek Bridge   [Map · Street View]
Cantilevered through truss bridge over the Missouri River on Old US 91
Open to traffic
Built 1933 by W.P. Roscoe Co.
Woodbridge Drive Bridge   [Map]
Wooden arch bridge over Sep Gully on Woodbridge Drive in Helena
Open to traffic
Built 1975
York Bridge   [Map]
Lost three-span through truss bridge over Missouri River on Route 280
Replaced by a new bridge
Built 1906 by the Minneapolis Steel & Machinery Co.; replaced 1982