Sweet Grass County, MT
89 public highway bridges
Sweet Grass County Bridge Snapshot
Sweet Grass County, Montana contains 89 public highway bridges in the FHWA National Bridge Inventory. Roughly 21.3% are rated “Good,” 49.4% “Fair,” 5.6% “Poor,” and 5.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.
Inspections in MT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (89)
I 90
UnknownOver: INT SPRINGDALE
SPRINGDALE, Sweet Grass, MT
I 90
UnknownOver: INT SPRINGDALE
SPRINGDALE, Sweet Grass, MT
I 90
UnknownOver: JARRETT CR FARM ACCESS
3.1M E SPRINGDALE, Sweet Grass, MT
I 90
UnknownOver: SEP COUNTY ROAD
5M W BIG TIMBER, Sweet Grass, MT
I 90
UnknownOver: SEP COUNTY ROAD
5M W BIG TIMBER, Sweet Grass, MT
I 90
UnknownOver: INT WEST BIG TIMBER
1.2M W BIG TIMBER, Sweet Grass, MT
I 90
UnknownOver: INT WEST BIG TIMBER
1.2M W BIG TIMBER, Sweet Grass, MT
I 90
UnknownOver: INT GREYCLIFF
GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: INT GREYCLIFF
GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: GREYCLIFF CREEK RD
3.7M E GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: GREYCLIFF CREEK RD
3.7M E GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: INT BRIDGER CREEK
6.2M E GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: INT BRIDGER CREEK
6.2M E GREYCLIFF, Sweet Grass, MT
I 90
UnknownOver: SEP WORK CREEK ROAD
3.1M W REED POINT, Sweet Grass, MT
I 90
UnknownOver: SEP WORK CREEK ROAD
3.1M W REED POINT, Sweet Grass, MT
I 90
UnknownOver: SEP HUMP CREEK ROAD
1.2M W REED POINT, Sweet Grass, MT
I 90
UnknownOver: SEP HUMP CREEK ROAD
1.2M W REED POINT, Sweet Grass, MT
OLD BOULDER RD
UnknownOver: SEP I 90 008
1M E BIG TIMBER, Sweet Grass, MT
DEHART TRAIL
UnknownOver: INT DEHART I 90 007
7M SW BIG TIMBER, Sweet Grass, MT
S 91
UnknownOver: INT EAST BIG TIMBER I 90
2M E BIG TIMBER, Sweet Grass, MT
MAIN BOULDER RD
UnknownOver: SEP I 90
BIG TIMBER, Sweet Grass, MT
TERLAND RD
FairOver: BRIDGER CREEK 053
5M SE GREYCLIFF, Sweet Grass, MT
HOWIE RD
FairOver: BIG TIMBER CREEK
1M NE BIG TIMBER, Sweet Grass, MT
MELVILLE RD
FairOver: SWEET GRASS CREEK 01
W MELVILLE, Sweet Grass, MT
BOULDER RD
FairOver: BOULDER RIVER 002
19M S MCLEOD, Sweet Grass, MT
E BOULDER RD
FairOver: E BOULDER RIVER 034
6M S MCLEOD, Sweet Grass, MT
E BOULDER RD
FairOver: E BOULDER RIVER 032
4M S MCLEOD, Sweet Grass, MT
E BOULDER RD
FairOver: E BOULDER RIVER 033
5M S MCLEOD, Sweet Grass, MT
LOWER SWEET GRASS
FairOver: YELLOWSTONE RIVER 038
SE GREYCLIFF, Sweet Grass, MT
OLD US 10
FairOver: PUMP CREEK 042
2.5M W REED POINT, Sweet Grass, MT
E BOULDER RD
FairOver: E BOULDER RIVER 031
3M S MCLEOD, Sweet Grass, MT
OLD US 10
FairOver: LOWER DEER CREEK 006
2M NW GREYCLIFF, Sweet Grass, MT
US 191
FairOver: CAYUSE CREEK
1M NE MELVILLE, Sweet Grass, MT
I 90
FairOver: JARRETT CR FARM ACCESS
3.1M E SPRINGDALE, Sweet Grass, MT
I 90
FairOver: BRIDGER CREEK
6.8M E GREYCLIFF, Sweet Grass, MT
US 191
FairOver: SWEET GRASS CREEK
2M S MELVILLE, Sweet Grass, MT
MAIN BOULDER RD
FairOver: BOULDER RIVER
8M S BIG TIMBER, Sweet Grass, MT
MAIN BOULDER RD
FairOver: WEST BOULDER RIVER
MCLEOD, Sweet Grass, MT
I 90
FairOver: CNTY RD 113-FRYER CREEK
4.3M E SPRINGDALE, Sweet Grass, MT
WORK CREEK RD
FairOver: WORK CREEK 050
9M SE GREYCLIFF, Sweet Grass, MT
OLD US 10
FairOver: BRIDGER CREEK 040
6M SE GREYCLIFF, Sweet Grass, MT
S 91
FairOver: BOULDER RIVER
BIG TIMBER, Sweet Grass, MT
MAIN BOULDER RD
FairOver: BOULDER RIVER
3M NE MCLEOD, Sweet Grass, MT
1-LANE ROAD
FairOver: W.FORK STILLWATER RIVER
NO DATA ENTERED, Sweet Grass, MT
OLD US 10
FairOver: WORK CREEK 041
4M W REED POINT, Sweet Grass, MT
US 191
FairOver: YELLOWSTONE RIVER
1M N BIG TIMBER, Sweet Grass, MT
I 90
FairOver: BOULDER RIVER
BIG TIMBER, Sweet Grass, MT
I 90
FairOver: BOULDER RIVER
BIG TIMBER, Sweet Grass, MT
N YELLOWSTONE TRL
FairOver: YELLOWSTONE RIVER 010
6M SW BIG TIMBER, Sweet Grass, MT
I 90
FairOver: BRIDGER CREEK
6.8M E GREYCLIFF, Sweet Grass, MT
Read our methodology — how this data is sourced, computed, and verified.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |