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)
BOULDER RD
FairOver: MILLER CREEK 001
19M S MCLEOD, Sweet Grass, MT
BRIDGER CREEK RD
FairOver: BRIDGER CREEK 054
15M S GREYCLIFF, Sweet Grass, MT
OLD US 10
FairOver: SPRING CREEK 035
2M NW GREYCLIFF, Sweet Grass, MT
I 90
FairOver: LOWER DEER CREEK
0.6M W GREYCLIFF, Sweet Grass, MT
I 90
FairOver: WORK CREEK
3.7M W REED POINT, Sweet Grass, MT
OLD US 10
FairOver: DRY CREEK 004
6M NW GREYCLIFF, Sweet Grass, MT
BOULDER RD
FairOver: SPECULATOR CREEK 011
20M S MCLEOD, Sweet Grass, MT
US 191
FairOver: OTTER CREEK
4M S MELVILLE, Sweet Grass, MT
OTTER CREEK RD
FairOver: TEN MILE CREEK 009
11M SE MELVILLE, Sweet Grass, MT
SUSIE CREEK RD
FairOver: BOULDER RIVER 045
1M S MCLEOD, Sweet Grass, MT
US 191
FairOver: BIG TIMBER CREEK
2M N BIG TIMBER, Sweet Grass, MT
I 90
FairOver: UPPER DEER CREEK
2.5M W GREYCLIFF, Sweet Grass, MT
I 90
FairOver: UPPER DEER CREEK
2.5M W GREYCLIFF, Sweet Grass, MT
HOWIE RD
FairOver: DRAINAGE 021
3M NE BIG TIMBER, Sweet Grass, MT
I 90
FairOver: SPRING CREEK
1M NW GREYCLIFF, Sweet Grass, MT
DRY FORK ROAD
GoodOver: E. BOULDER RIVER
NO DATA ENTERED, Sweet Grass, MT
OLD US 10
GoodOver: UPPER DEER CREEK 005
4M NW GREYCLIFF, Sweet Grass, MT
I 90
GoodOver: CNTY RD 113-FRYER CREEK
4.3M E SPRINGDALE, Sweet Grass, MT
NO DATA ENTERED
GoodOver: PICKET PIN CREEK
NO DATA ENTERED, Sweet Grass, MT
SOURDOUGH RD
GoodOver: SWEET GRASS CREEK 027
13M NE BIG TIMBER, Sweet Grass, MT
LOWER SWEET GRASS
GoodOver: SWEET GRASS CREEK 039
10M E BIG TIMBER, Sweet Grass, MT
LOWER SWEET GRASS
GoodOver: E FK SWEET GRASS CR 01
14M NE BIG TIMBER, Sweet Grass, MT
MELVILLE ROAD
GoodOver: SWEET GRASS CREEK
11 M NW MELVILLE, Sweet Grass, MT
OLD BOULDER ROAD
GoodOver: BOULDER RIVER 029
EAST BIG TIMBER, Sweet Grass, MT
I 90
GoodOver: LOWER DEER CREEK
0.6M W GREYCLIFF, Sweet Grass, MT
E BOULDER RD
GoodOver: BOULDER RIVER 030
2M S MCLEOD, Sweet Grass, MT
BRIDGER CREEK ROAD
GoodOver: BRIDGER CREEK
9M SE GREYCLIFF, Sweet Grass, MT
HOWIE RD
GoodOver: OTTER CREEK
2M NE BIG TIMBER, Sweet Grass, MT
BRIDGER CREEK RD
GoodOver: BRIDGER CREEK
13.6M SE GREYCLIFF, Sweet Grass, MT
OTTER CREEK RD
GoodOver: SWEET GRASS CREEK 00
6M SE MELVILLE, Sweet Grass, MT
SWAMP CREEK RD
GoodOver: BIG TIMBER CREEK
4M N BIG TIMBER, Sweet Grass, MT
RAPELJE RD
GoodOver: SWEET GRASS CREEK
11M NE BIG TIMBER, Sweet Grass, MT
SWAMP CREEK RD
GoodOver: SWAMP CREEK
5.9M N BIG TIMBER, Sweet Grass, MT
DERBY GULCH ROAD
GoodOver: WEST BRIDGER CREEK
NO DATA ENTERED, Sweet Grass, MT
UPPER DEER CR RD
PoorOver: UPPER DEER CREEK 028
6M SE BIG TIMBER, Sweet Grass, MT
BOINTER RD
PoorOver: SWEET GRASS CREEK 044
9M SE BIG TIMBER, Sweet Grass, MT
S 91
PoorOver: BOULDER RIVER OVERFLOW
BIG TIMBER, Sweet Grass, MT
US 191
PoorOver: RYE CREEK
2M S MELVILLE, Sweet Grass, MT
MCLEOD MAIN ST
Structurally DeficientOver: WEST BOULDER RIVER 025
MCLEOD, 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 |