US Bridges

Sweet Grass County, Montana bridges

Sweet Grass County has 94 bridges and culverts in the National Bridge Inventory, the oldest built in 1912. 6 (6%) are rated poor. The most common type is stringer/multi-beam or girder (72%).

Bridges
94
Good
32%
Fair
62%
Poor
6%
6 bridges
Average age
47.3 yrs
Posted or closed
6

Map of bridges in Sweet Grass County

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

Search bridges in Sweet Grass County

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

Condition

6%poor
Good32%(30)
Fair62%(58)
Poor6%(6)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 1 bridges119101920s: 2 bridges219201930s: 9 bridges919301940s: 3 bridges319401950s: 2 bridges219501960s: 8 bridges819601970s: 20 bridges2019701980s: 22 bridges2219801990s: 5 bridges519902000s: 10 bridges1020002010s: 6 bridges620102020s: 6 bridges62020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. I 90 over Spring Creek
    12,306 vehicles/day
    Fair
  2. I 90 over Work Creek
    10,845 vehicles/day
    Fair
  3. I 90 over Upper Deer Creek
    6,153 vehicles/day
    Fair
  4. I 90 over Upper Deer Creek
    6,153 vehicles/day
    Fair
  5. I 90 over Lower Deer Creek
    6,153 vehicles/day
    Fair

Longest

  1. N Yellowstone Trl over Yellowstone River 010
    427 ft
    Fair
  2. I 90 over Boulder River
    396 ft
    Fair
  3. I 90 over Boulder River
    396 ft
    Good
  4. Main Boulder RD over Sep I 90
    395 ft
    Fair
  5. US 191 over Yellowstone River
    380 ft
    Fair

Oldest

  1. Mcleod Main ST over West Boulder River 025
    Built 1912
    Poor
  2. Howie RD over Drainage 021
    Built 1923
    Fair
  3. Old US 10 over Lower Deer Creek 006
    Built 1928
    Fair
  4. Old US 10 over Bridger Creek 040
    Built 1931
    Fair
  5. Boulder RD over Boulder River 002
    Built 1931
    Fair

All bridges in Sweet Grass County

Busiest first · showing 1–94 of 94
Bridges in Sweet Grass County
BridgeLocationBuiltTypeLengthDaily trafficCondition
I 90 over Spring Creek
No. I00090377+05001
1M NW Greycliff1980Culvert22 ft12,306Fair
I 90 over Work Creek
No. I00090388+03001
3.7M W Reed Point1972Culvert21 ft10,845Fair
I 90 over Upper Deer Creek
No. I00090375+04861
2.5M W Greycliff1980Stringer/Multi-beam or Girder172 ft6,153Fair
I 90 over Upper Deer Creek
No. I00090375+04862
2.5M W Greycliff1980Stringer/Multi-beam or Girder172 ft6,153Fair
I 90 over Lower Deer Creek
No. I00090377+02361
0.6M W Greycliff1980Stringer/Multi-beam or Girder72 ft6,153Fair
I 90 over Lower Deer Creek
No. I00090377+02362
0.6M W Greycliff1980Stringer/Multi-beam or Girder72 ft6,153Good
I 90 over Int Springdale
No. I00090354+03151
Springdale1981Stringer/Multi-beam or Girder124 ft6,090Good
I 90 over Int Springdale
No. I00090354+03152
Springdale1981Stringer/Multi-beam or Girder124 ft6,090Good
I 90 over Jarrett CR Farm Access
No. I00090357+02211
3.1M E Springdale1981Stringer/Multi-beam or Girder115 ft6,090Fair
I 90 over Jarrett CR Farm Access
No. I00090357+02212
3.1M E Springdale1981Stringer/Multi-beam or Girder115 ft6,090Good
I 90 over Cnty RD 113-FRYER Creek
No. I00090358+04801
4.3M E Springdale1983Slab78 ft6,090Good
I 90 over Cnty RD 113-FRYER Creek
No. I00090358+04802
4.3M E Springdale1983Slab78 ft6,090Fair
I 90 over Sep County Road
No. I00090363+05671
5M W Big Timber1981Slab79 ft6,090Fair
I 90 over Sep County Road
No. I00090363+05672
5M W Big Timber1981Slab79 ft6,090Fair
I 90 over Int Greycliff
No. I00090378+00341
Greycliff1972Stringer/Multi-beam or Girder128 ft5,423Fair
I 90 over Int Greycliff
No. I00090378+00342
Greycliff1972Stringer/Multi-beam or Girder128 ft5,423Fair
I 90 over Greycliff Creek RD
No. I00090381+05801
3.7M E Greycliff1972Slab78 ft5,423Fair
I 90 over Greycliff Creek RD
No. I00090381+05802
3.7M E Greycliff1972Slab78 ft5,423Fair
I 90 over Bridger Creek
No. I00090384+07421
6.8M E Greycliff1972Stringer/Multi-beam or Girder169 ft5,423Fair
I 90 over Bridger Creek
No. I00090384+07422
6.8M E Greycliff1972Stringer/Multi-beam or Girder169 ft5,423Fair
I 90 over Int Bridger Creek
No. I00090384+10311
6.2M E Greycliff1972Stringer/Multi-beam or Girder123 ft5,423Fair
I 90 over Int Bridger Creek
No. I00090384+10312
6.2M E Greycliff1972Stringer/Multi-beam or Girder123 ft5,423Fair
I 90 over Sep Work Creek Road
No. I00090388+07351
3.1M W Reed Point1972Stringer/Multi-beam or Girder128 ft5,423Fair
I 90 over Sep Work Creek Road
No. I00090388+07352
3.1M W Reed Point1972Stringer/Multi-beam or Girder128 ft5,423Fair
I 90 over Sep Hump Creek Road
No. I00090391+00401
1.2M W Reed Point1963Stringer/Multi-beam or Girder102 ft5,423Fair
I 90 over Sep Hump Creek Road
No. I00090391+00402
1.2M W Reed Point1972Stringer/Multi-beam or Girder103 ft5,423Fair
I 90 over Int West Big Timber
No. I00090367+05231
1.2M W Big Timber1981Stringer/Multi-beam or Girder145 ft4,977Good
I 90 over Int West Big Timber
No. I00090367+05232
1.2M W Big Timber1981Stringer/Multi-beam or Girder145 ft4,977Fair
I 90 over Boulder River
No. I00090369+00271
Big Timber1980Stringer/Multi-beam or Girder396 ft4,977Fair
I 90 over Boulder River
No. I00090369+00272
Big Timber1980Stringer/Multi-beam or Girder396 ft4,977Good
S 91 over Boulder River
No. P00091002+06221
Big Timber1938Stringer/Multi-beam or Girder286 ft2,133Fair
S 91 over Boulder River Overflow
No. P00091002+06681
Big Timber1937Stringer/Multi-beam or Girder26 ft2,133Poor
S 91 over Int East Big Timber I 90
No. P00091003+00311
2M E Big Timber1981Stringer/Multi-beam or Girder323 ft2,133Fair
US 191 over Yellowstone River
No. P00045000+09831
1M N Big Timber1938Girder and Floorbeam System380 ft1,699Fair
US 191 over Big Timber Creek
No. P00045001+07641
2M N Big Timber1997Stringer/Multi-beam or Girder162 ft1,341Fair
Main Boulder RD over Sep I 90
No. S00298000+08841
Big Timber1980Stringer/Multi-beam or Girder395 ft958Fair
US 191 over Otter Creek
No. P00045016+03331
4M S Melville2004Stringer/Multi-beam or Girder67 ft661Fair
US 191 over Rye Creek
No. P00045018+01381
2M S Melville1947Stringer/Multi-beam or Girder58 ft661Poor
US 191 over Sweet Grass Creek
No. P00045018+02631
2M S Melville1947Stringer/Multi-beam or Girder184 ft661Fair
US 191 over Cayuse Creek
No. P00045020+04461
1M NE Melville1947Stringer/Multi-beam or Girder38 ft661Fair
Old US 10 over Dry Creek 004
No. L49125002+05001
6M NW Greycliff1937Stringer/Multi-beam or Girder57 ft556Fair
Old US 10 over Upper Deer Creek 005
No. L49125004+03001
4M NW Greycliff1975Stringer/Multi-beam or Girder100 ft556Good
Main Boulder RD over Boulder River
No. S00298008+05001
8M S Big Timber1975Stringer/Multi-beam or Girder206 ft529Good
Main Boulder RD over Boulder River
No. S00298013+00001
3M NE Mcleod1950Stringer/Multi-beam or Girder153 ft529Fair
Main Boulder RD over West Boulder River
No. S00298016+03261
Mcleod1976Stringer/Multi-beam or Girder153 ft529Fair
Howie RD over Big Timber Creek
No. S00478000+02001
1M NE Big Timber2004Tee Beam78 ft484Fair
Howie RD over Otter Creek
No. S00478001+07001
2M NE Big Timber2000Stringer/Multi-beam or Girder65 ft484Good
Old US 10 over Lower Deer Creek 006
No. L49125006+01001
2M NW Greycliff1928Stringer/Multi-beam or Girder40 ft344Fair
Old US 10 over Spring Creek 035
No. L49125006+04001
2M NW Greycliff1936Stringer/Multi-beam or Girder25 ft344Fair
Old US 10 over Bridger Creek 040
No. L49125012+07001
6M SE Greycliff1931Tee Beam96 ft344Fair
Otter Creek RD over Ten Mile Creek 009
No. L49011006+01001
11M SE Melville1977Stringer/Multi-beam or Girder30 ft202Fair
Howie RD over Drainage 021
No. L49014000+05001
3M NE Big Timber1923Stringer/Multi-beam or Girder24 ft164Fair
Boulder RD over Boulder River 003
No. 000000000004519
12M S Mcleod2017Stringer/Multi-beam or Girder126 ft157Good
Boulder RD over Miller Creek 001
No. L49102007+00001
19M S Mcleod1965Stringer/Multi-beam or Girder27 ft157Fair
Boulder RD over Boulder River 002
No. L49102007+01001
19M S Mcleod1931Truss - Thru112 ft157Fair
Boulder RD over Speculator Creek 011
No. L49102008+05001
20M S Mcleod1965Stringer/Multi-beam or Girder27 ft157Fair
Yellowstone Trail over Duck Creek
No. 000000000007080
17M W Big Timber1980Stringer/Multi-beam or Girder30 ft129Fair
N Yellowstone Trl over Yellowstone River 010
No. L49028000+08001
6M SW Big Timber2000Stringer/Multi-beam or Girder427 ft129Fair
Wheeler Creek RD over Wheeler Creek
No. 000000000007078
3.3M W HWY 1912007Stringer/Multi-beam or Girder33 ft100Good
Swamp Creek RD over Big Timber Creek
No. 000000201904511
4M N Big Timber2019Stringer/Multi-beam or Girder65 ft100Good
Old Boulder Road over Boulder River 029
No. 000000202004523
East Big Timber2020Tee Beam138 ft100Fair
Swamp Creek RD over Swamp Creek
No. 000000202008018
5.9M N Big Timber2020Stringer/Multi-beam or Girder65 ft100Good
Bridger Creek RD over Bridger Creek
No. 000000202108019
13.6M SE Greycliff2021Stringer/Multi-beam or Girder40 ft100Good
Bridger Creek Road over Bridger Creek
No. 000000202204525
9M SE Greycliff2022Stringer/Multi-beam or Girder65 ft100Good
Melville Road over Sweet Grass Creek
No. 000000202304509
11 M NW Melville2023Stringer/Multi-beam or Girder65 ft100Good
E Boulder Road over E Boulder River
No. 000000202404531
4M S Mcleod2024Stringer/Multi-beam or Girder70 ft100Good
Lower Sweet Grass over Yellowstone River 038
No. L49001000+08001
SE Greycliff1991Stringer/Multi-beam or Girder353 ft100Fair
Lower Sweet Grass over Sweet Grass Creek 039
No. L49001007+00001
10M E Big Timber1965Stringer/Multi-beam or Girder52 ft100Good
Sourdough RD over Sweet Grass Creek 027
No. L49016006+02001
13M NE Big Timber1997Tee Beam60 ft100Fair
Melville RD over Sweet Grass Creek 01
No. L49044001+03001
W Melville1957Tee Beam110 ft100Fair
Bointer RD over Sweet Grass Creek 044
No. L49051000+09001
9M SE Big Timber1970Stringer/Multi-beam or Girder48 ft100Poor
Old Boulder RD over Sep I 90 008
No. L49103000+07001
1M E Big Timber1981Stringer/Multi-beam or Girder286 ft100Fair
Bridger Creek RD over Bridger Creek 054
No. L49104008+09641
15M S Greycliff2004Tee Beam31 ft100Fair
Work Creek RD over Work Creek 050
No. L49107000+03001
9M SE Greycliff1993Stringer/Multi-beam or Girder29 ft100Fair
Upper Deer CR RD over Upper Deer Creek 028
No. L49109002+03001
6M SE Big Timber1975Stringer/Multi-beam or Girder44 ft100Poor
E Boulder RD over Boulder River 030
No. L49116000+03001
2M S Mcleod2002Tee Beam118 ft100Good
E Boulder RD over E Boulder River 031
No. L49116001+01001
3M S Mcleod1965Stringer/Multi-beam or Girder41 ft100Fair
E Boulder RD over E Boulder River 033
No. L49118001+03001
5M S Mcleod1969Stringer/Multi-beam or Girder30 ft100Good
E Boulder RD over E Boulder River 034
No. L49118001+09001
6M S Mcleod1971Stringer/Multi-beam or Girder34 ft100Fair
Dehart Trail over Int Dehart I 90 007
No. L49122000+00201
7M SW Big Timber1981Stringer/Multi-beam or Girder296 ft100Good
Terland RD over Bridger Creek 053
No. L49124000+02001
5M SE Greycliff1975Stringer/Multi-beam or Girder42 ft100Fair
Susie Creek RD over Boulder River 045
No. L49126000+02001
1M S Mcleod1960Stringer/Multi-beam or Girder118 ft100Fair
Mcleod Main ST over West Boulder River 025
No. L49143000+06001
Mcleod1912Truss - Thru62 ft100Poor
Glaston RD over Otter Creek
No. 000000000007019
7M SE Melville2013Tee Beam47 ft73Good
Otter Creek RD over Sweet Grass Creek 00
No. L49007009+08001
6M SE Melville2009Stringer/Multi-beam or Girder102 ft73Good
Rapelje RD over Sweet Grass Creek
No. S00478010+07391
11M NE Big Timber1993Slab91 ft57Good
1-LANE Road over W.Fork Stillwater River
No. 010802000001001
No Data Entered1964Girder and Floorbeam System40 ft50Fair
Dry Fork Road over E. Boulder River
No. 011100000011023
No Data Entered2007Stringer/Multi-beam or Girder57 ft50Good
No Data Entered over Picket Pin Creek
No. 010802000013609
No Data Entered2010Tee Beam42 ft40Good
Derby Gulch Road over West Bridger Creek
No. 011101000011507
No Data Entered2007Slab28 ft40Good
Old US 10 over Work Creek 041
No. L49125016+04001
4M W Reed Point1932Tee Beam68 ft29Poor
Old US 10 over Pump Creek 042
No. L49125017+09001
2.5M W Reed Point1932Tee Beam30 ft29Fair
Lower Sweet Grass over Sweet Grass Creek 01
No. 000000000004513
12M NE Big Timber2017Stringer/Multi-beam or Girder102 ft15Good
Lower Sweet Grass over E Fk Sweet Grass CR 01
No. L49014010+03001
14M NE Big Timber2012Tee Beam51 ft15Good

Structure types in Sweet Grass County

Stringer/Multi-beam or Girder6872.3%
Tee Beam1212.8%
Slab88.5%
Truss - Thru22.1%
Culvert22.1%
Girder and Floorbeam System22.1%

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