US Bridges

Lake County, Montana bridges

Lake County has 116 bridges and culverts in the National Bridge Inventory, the oldest built in 1920. 13 (11%) are rated poor. The most common type is stringer/multi-beam or girder (64%).

Bridges
116
Good
60%
Fair
28%
Poor
11%
13 bridges
Average age
27.2 yrs
Posted or closed
16

Map of bridges in Lake County

Green good, amber fair, red poor. Click a marker for details.

Search bridges in Lake County

Type at least two characters, or pick a condition or type, to search every bridge in the county.

Condition

11%poor
Good60%(70)
Fair28%(33)
Poor11%(13)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 2 bridges219201930s: 4 bridges419301940s: 0 bridges19401950s: 4 bridges419501960s: 6 bridges619601970s: 9 bridges919701980s: 7 bridges719801990s: 6 bridges619902000s: 39 bridges3920002010s: 25 bridges2520102020s: 14 bridges142020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. IRR - US 93 over Pablo Feeder Canal
    15,997 vehicles/day
    Good
  2. US 93 over Wildlife Crossing
    10,897 vehicles/day
    Good
  3. US 93 over Wildlife Crossing
    10,897 vehicles/day
    Good
  4. US 93 over Agricultural Crossing
    10,897 vehicles/day
    Good
  5. IRR - US 93 over Jocko River
    8,775 vehicles/day
    Good

Longest

  1. IRR - US 93 over Flathead River
    1,537 ft
    Fair
  2. Buffalo Bridge RD over Flathead River 084
    528 ft
    Fair
  3. IRR - S 200 over Jocko River-Rr
    493 ft
    Fair
  4. IRR - US 93 over Jocko River
    399 ft
    Good
  5. S Ferndale DR over Swan River 102
    308 ft
    Fair

Oldest

  1. Fish Hatchery RD over Post Creek 075
    Built 1920
    Fair
  2. S Main Ave over Mission Creek 052
    Built 1929
    Poor
  3. Jocko Canyon RD over Jocko River 013
    Built 1930
    Good
  4. Old US HWY 93 over Dayton Creek 105
    Built 1930
    Fair
  5. IRR - US 93 over Post Creek
    Built 1933
    Fair

All bridges in Lake County

Busiest first · showing 1–116 of 116
Bridges in Lake County
BridgeLocationBuiltTypeLengthDaily trafficCondition
IRR - US 93 over Pablo Feeder Canal
No. P00005057+00641
2M SE Polson2006Culvert22 ft15,997Good
US 93 over Wildlife Crossing
No. 000000202108030
2 Miles North of Ronan2007Culvert29 ft10,897Good
US 93 over Wildlife Crossing
No. P00005048+06731
2M NE Ronan2007Culvert28 ft10,897Good
US 93 over Agricultural Crossing
No. P00005049+02721
2M N Ronan2007Culvert28 ft10,897Good
IRR - US 93 over Jocko River
No. P00005018+09461
Arlee2005Stringer/Multi-beam or Girder399 ft8,775Good
US 93 over Spring Creek
No. P00005023+02251
3M S Ravalli2006Stringer/Multi-beam or Girder99 ft8,775Good
US 93 over Wildlife Underpass
No. P00005024+02321
S of Ravalli2006Culvert23 ft8,775Good
US 93 over Wildlife Underpass
No. P00005024+07981
S of Ravalli2006Culvert23 ft8,775Good
US 93 over Jocko River Side Channel
No. P00005025+07921
7.5M N Arlee2006Stringer/Multi-beam or Girder98 ft8,775Fair
US 93 over Wildlife Upass-Drainage
No. P00005026+04161
1M S Ravalli2006Culvert25 ft8,775Good
US 93 over Wildlife Upass-Drainage
No. P00005033+07751
1M N ST Ignatius2006Culvert26 ft8,659Good
US 93 over Wildlife Upass-Drainage
No. P00005034+00541
2M N ST Ignatius2006Culvert28 ft8,659Good
US 93 over Wildlife Upass-Drainage
No. P00005034+03601
3M N ST Ignatius2006Culvert26 ft8,659Good
IRR - US 93 over Flathead River
No. P00005061+01811
Polson1966Stringer/Multi-beam or Girder1,537 ft8,557Fair
IRR - US 93 over Post Creek
No. P00005037+07681
6M N ST Ignatius1933Tee Beam51 ft8,158Fair
IRR - US 93 over Nine Pipe Reservoir
No. P00005040+09851
5M S Ronan1933Stringer/Multi-beam or Girder77 ft8,158Poor
US 93 over Wildlife Underpass
No. P00005057+07611
1M SE Polson2006Culvert24 ft7,999Good
US 93 over Wildlife Underpass
No. P00005057+07612
1M SE Polson2006Culvert24 ft7,999Good
US 93 over Wildlife Upass-Relief
No. P00005028+01081
1M N Ravalli2006Culvert28 ft7,746Good
US 93 over Wildlife Upass-Drainage
No. P00005028+03711
1M N Ravalli2006Culvert28 ft7,746Good
US 93 over Grade Separation
No. P00005029+02801
2M N Ravalli2006Stringer/Multi-beam or Girder67 ft7,746Fair
US 93 over Wildlife Upass-Drainage
No. P00005030+05371
2M S ST Ignatius2006Culvert24 ft7,746Good
US 93 over Wildlife Upass-Drainage
No. P00005030+07281
2M S ST Ignatius2006Culvert27 ft7,746Good
US 93 over Sabine Creek-Wildlife
No. P00005031+07421
1M S ST Ignatius2006Culvert24 ft7,746Good
US 93 over Mission Creek
No. P00005032+04001
ST Ignatius2006Stringer/Multi-beam or Girder133 ft7,746Fair
US 93 over Mud Creek
No. P00005050+05081
4M N Ronan2008Arch - Deck52 ft5,852Fair
US 93 over Mud Creek
No. P00005050+05082
4M N Ronan2007Arch - Deck52 ft5,852Fair
IRR - US 93 over Dayton Creek
No. P00005082+03541
Dayton1987Stringer/Multi-beam or Girder71 ft5,161Fair
Kerr Dam RD over Irrigation Canal
No. S00354002+09501
2M SW Polson1995Stringer/Multi-beam or Girder37 ft2,737Good
S Main Ave over Mission Creek 052
No. M24100000+00101
ST Ignatius-S Main ST1929Tee Beam33 ft2,233Poor
IRR - S 200 over Jocko River-Rr
No. P00006115+08931
Ravalli1998Stringer/Multi-beam or Girder493 ft1,938Fair
S 83 FH 15 over Lion Creek
No. P00083053+09801
17M S Swan Lake1996Stringer/Multi-beam or Girder81 ft1,289Fair
S 83 FH 15 over Goat Creek
No. P00083058+06641
12M S Swan Lake2004Stringer/Multi-beam or Girder69 ft1,246Fair
S 83 FH 15 over Lost Creek
No. P00083067+02881
3M S Swan Lake1953Stringer/Multi-beam or Girder58 ft1,246Poor
IRR - S 212 over Mission Creek
No. S00212005+00991
Moiese1959Stringer/Multi-beam or Girder75 ft922Fair
N Resevoir RD over Pablo Feeder Canal 085
No. L24005002+09001
5M S Polson2009Stringer/Multi-beam or Girder80 ft873Good
Glover RD over Pablo 3A Canal 037
No. L24064000+08001
4M S Polson1985Stringer/Multi-beam or Girder30 ft471Poor
N Valley Creek RD over Jocko River 054
No. L24380000+01001
2M S Ravalli1970Tee Beam80 ft460Fair
N Valley Creek RD over Valley Creek 055
No. L24380002+00001
3M S Ravalli1960Stringer/Multi-beam or Girder31 ft460Fair
Light RD over Pablo 31A Canal 036
No. L24029001+08001
5M S Polson2009Stringer/Multi-beam or Girder80 ft292Poor
Rocky Butte RD over Crow Creek 070
No. L24370002+09001
2M SW Ronan1986Stringer/Multi-beam or Girder30 ft128Poor
S Valley Creek RD over Jocko River 056
No. L24397000+04001
4M NW Arlee2012Stringer/Multi-beam or Girder161 ft124Good
Leighton RD over Pablo Canal 37A
No. 000000000003264
2M NW Pablo2018Stringer/Multi-beam or Girder55 ft100Good
Timberlane RD over N Crow Creek 002
No. 000000000003290
3M SE Ronan2017Stringer/Multi-beam or Girder31 ft100Good
Old Freight RD over Post Creek 053
No. 000000000003295
3M NW ST Ignatius2016Stringer/Multi-beam or Girder65 ft100Good
Delaney Way over Post Creek 074
No. 000000000003318
8M S Ronan2017Stringer/Multi-beam or Girder50 ft100Fair
Emory RD over Pablo Feeder Canal 025
No. 000000000003329
4M NE Ronan2018Stringer/Multi-beam or Girder40 ft100Fair
Ford RD over Pablo Feeder Canal 072
No. 000000000003332
3M SE Polson2017Stringer/Multi-beam or Girder53 ft100Good
Stasso Road over Pablo Canal 37A4
No. 000000202003267
5 Miles South of Polson2020Stringer/Multi-beam or Girder45 ft100Good
Mission Creek Road over South Mission Reservior
No. 000000202003313
6 Miles East ST Ignatius2019Stringer/Multi-beam or Girder50 ft100Good
Mission Dam Road over Mission Creek
No. 000000202103308
2M E ST Ignatius2021Stringer/Multi-beam or Girder50 ft100Good
Howlett Road over Crow Creek
No. 000000202103312
3 M SW Ronan2021Stringer/Multi-beam or Girder34 ft100Good
Hillside Road over Mission Creek
No. 000000202108035
1.5 Miles E. St. Ignatius2021Stringer/Multi-beam or Girder40 ft100Good
Garcon Gulch Road over Little Bitterroot River
No. 000000202303257
7 M N Hot Springs2022Stringer/Multi-beam or Girder50 ft100Good
Foothill Road over Mission Res Inlet 043
No. 000000202303281
6 M SE ST Ignatius2023Stringer/Multi-beam or Girder40 ft100Good
Mollman Pass Trail over N Kicking Horse Res 009
No. 000000202303285
4M S Ronan2023Stringer/Multi-beam or Girder45 ft100Good
Hillside Road over Post Creek
No. 000000202303287
7 M South Ronan2023Stringer/Multi-beam or Girder45 ft100Good
East Post Creek RD over Post Creek 080
No. 000000202303300
5 MI N of ST Ignatius2022Stringer/Multi-beam or Girder40 ft100Good
Lil Bitterroot RD over Little Bitterroot RD 061
No. 000000202403258
7M NE Hot Springs2024Stringer/Multi-beam or Girder40 ft100Good
Carbine RD over Pablo Canal 026
No. 000000202403266
4M W Pablo2024Stringer/Multi-beam or Girder45 ft100Good
Moiese Valley RD over Crow Creek 066
No. 000000202403279
10M SW Ronan2024Stringer/Multi-beam or Girder60 ft100Good
Paulson RD over Pablo a Canal 034
No. 000000202403296
5M S Polson2024Stringer/Multi-beam or Girder45 ft100Good
Mountain View Road over Pablo Feeder Canal
No. 000000202403323
6 M SE Polson2024Stringer/Multi-beam or Girder40 ft100Good
Lil Bitterroot RD over Little Bitterroot R 063
No. L24001034+00001
7M E Hot Springs2013Stringer/Multi-beam or Girder60 ft100Good
Buffalo Bridge RD over Flathead River 084
No. L24002008+00001
10M W Polson1993Stringer/Multi-beam or Girder528 ft100Fair
Old US HWY 93 over Mud Creek 097
No. L24009003+08001
4M N Ronan2007Arch - Deck52 ft100Fair
Skyline DR over Pablo Feeder Canal 040
No. L24017001+08001
2M SE Polson2011Culvert22 ft100Good
Kaiser RD over Pablo Canal 031
No. L24030002+02001
6M W Ronan2014Culvert23 ft100Good
Skyline DR over Pablo 3A Canal 039
No. L24065000+05001
3M S Polson2015Stringer/Multi-beam or Girder55 ft100Good
Skyline DR over Pablo 3A Canal 038
No. L24065002+02001
4M S Polson2013Stringer/Multi-beam or Girder41 ft100Good
Red Barn RD over Little Bitterroot Rv 064
No. L24086000+02001
8M NE Hot Springs1960Stringer/Multi-beam or Girder24 ft100Poor
Seifert RD over Pablo a Canal 083
No. L24124005+05001
6M SW Polson1960Stringer/Multi-beam or Girder39 ft100Poor
Schaefer RD over Pablo Feeder Canal 086
No. L24127000+03001
4M SE Polson1985Culvert32 ft100Poor
Kopp RD over Little Bitterroot Rv 062
No. L24132000+09001
8M NE Hot Springs1955Stringer/Multi-beam or Girder35 ft100Fair
Foothill RD over Mission Creek 044
No. L24302008+05001
2M E ST Ignatius1988Culvert30 ft100Good
Terrace Lake RD over N Crow Creek 021
No. L24308001+01001
1M E Ronan1965Stringer/Multi-beam or Girder29 ft100Fair
Terrace Lake RD over Pablo Feeder Canal 022
No. L24308002+03001
2M E Ronan2009Stringer/Multi-beam or Girder57 ft100Fair
Jocko Canyon RD over Jocko River 011
No. L24339000+06001
4M E Arlee1975Tee Beam44 ft100Poor
Jocko Canyon RD over Jocko River 012
No. L24339003+07001
7M E Arlee1976Tee Beam58 ft100Fair
Jocko Canyon RD over Jocko River 013
No. L24339005+07001
9M E Arlee1930Stringer/Multi-beam or Girder79 ft100Good
Old Freight Road over Mission Creek 105
No. L24340002+06501
2M NW ST Ignatius2012Stringer/Multi-beam or Girder40 ft100Good
Mcdonald Lake RD over Post Creek 078
No. L24352001+01001
6M N ST Ignatius2015Stringer/Multi-beam or Girder40 ft100Good
Mcdonald Lake RD over Pablo Feeder Canal 077
No. L24352003+09001
7M NE ST Ignatius2004Stringer/Multi-beam or Girder40 ft100Good
Eagle Pass Trail over S Kicking Horse Res 010
No. L24357001+09001
6M SE Ronan1991Culvert22 ft100Fair
Eagle Pass Trail over Pablo Feeder Canal 104
No. L24357004+00001
9M NE ST Ignatius1977Stringer/Multi-beam or Girder31 ft100Poor
Allison RD over Pablo Feeder Canal 046
No. L24358003+02001
3M NE ST Ignatius1960Stringer/Multi-beam or Girder28 ft100Poor
Fish Hatchery RD over Post Creek 075
No. L24363003+01001
4M N ST Ignatius1920Tee Beam38 ft100Fair
Theresa Adams LN over Jocko River 057
No. L24366000+06001
2M E Arlee1978Tee Beam45 ft100Fair
Jocko Canyon Road over Jocko River 015
No. L24398000+04001
11M NE Arlee2003Stringer/Multi-beam or Girder60 ft100Fair
Beaverhead DR over Crow Creek 071
No. L24418000+07001
3M S Ronan2003Stringer/Multi-beam or Girder50 ft100Fair
Minesinger Trail over Pablo Feeder Canal 003
No. L24601002+04001
6M SE Polson1978Tee Beam65 ft100Fair
Courville Trail over Pablo Feeder Canal 006
No. L24622000+09001
7M SW Polson1978Tee Beam45 ft100Good
Canyon Mill RD over Pablo Feeder Canal 008
No. L24623002+03001
2M NW Ronan2014Stringer/Multi-beam or Girder51 ft100Good
Yenne Point RD over Drain to Woods Bay 103
No. L24628000+07001
Woods Bay2008Stringer/Multi-beam or Girder50 ft100Fair
S Ferndale DR over Swan River 102
No. L24630000+06001
2M SE Ferndale2007Stringer/Multi-beam or Girder308 ft100Fair
Michael RD over Pablo Feeder Canal 024
No. L24691000+08001
3M NE Ronan2014Channel Beam56 ft100Good
Salmon Prairie RD over Swan River 091
No. L24701000+09001
22M S Swan Lake1986Stringer/Multi-beam or Girder156 ft100Good
N Crow RD over Pablo Feeder Canal 007
No. L24727000+05001
3M SE Pablo1978Tee Beam45 ft100Fair
Old US HWY 93 over Dayton Creek 105
No. L24742002+08501
Dayton1930Tee Beam64 ft100Fair
IRR BIA RTE 1114 over Jocko River
No. 00000000000P838
14.5 KM East of Arlee1996Stringer/Multi-beam or Girder60 ft75Good
IRR BIA RTE 1012 over Dry Creek Canal
No. 00000000000P816
9 KM S.E. of St. Ignatius1975Stringer/Multi-beam or Girder22 ft50Poor
Forest System Road over Swan River
No. 011000000015084
No Data Entered2012Stringer/Multi-beam or Girder163 ft50Good
Forest Road over Jim Creek
No. 011001000016964
Peck Lake Road2016Tee Beam67 ft50Good
No Data Entered over Archibald CR
No. 011604000003061
No Data Entered2004Slab30 ft50Good
NFSR over Pony Creek
No. 011001000010924
Condon Area2008Stringer/Multi-beam or Girder42 ft40Good
NFSR over Cat Creek
No. 011001000010926
Condon Area2008Stringer/Multi-beam or Girder43 ft40Good
System Road over Fatty Creek
No. 011001000015572
Fatty Piper Connector2013Stringer/Multi-beam or Girder62 ft40Good
Forest Road over Dog Creek
No. 011001000015573
No Data Entered2013Stringer/Multi-beam or Girder58 ft40Good
Forest Road over North Fork Lost Creek
No. 011001000016329
South Lost2014Stringer/Multi-beam or Girder60 ft40Good
Forest Road over Piper Creek
No. 011001000016918
Piper Creek Road2015Tee Beam71 ft40Good
Forest Road over North Fork Lost Creek
No. 011001000016919
North Lost2015Stringer/Multi-beam or Girder60 ft40Good
IRR BIA RTE 1012 over North Fork Jocko River
No. 00000000000P842
24.1KM Northeast of Arlee2003Stringer/Multi-beam or Girder60 ft30Good
IRR BIA RTE 12 over Mission Dam Creek
No. 00000000000P852
3.2KM E of ST Ignatius Mt2010Tee Beam57 ft30Good
Forest Road over Creek
No. 011001000003027
North Fork Lost Creek2005Slab34 ft30Good
Forest Road over Swan River
No. 011001000000109
Porcupine Creek Road1956Stringer/Multi-beam or Girder231 ft20Fair
Forest Road over Cedar Creek
No. 011001000000099
Fatty-Piper Connector1985Stringer/Multi-beam or Girder29 ft10Good

Structure types in Lake County

Stringer/Multi-beam or Girder7463.8%
Culvert2219.0%
Tee Beam1412.1%
Arch - Deck32.6%
Slab21.7%
Channel Beam10.9%

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