Prairie County, MT

46 public highway bridges

Prairie County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Prairie County, Montana contains 46 public highway bridges. Roughly 10.9% are rated “Good,” 63% “Fair,” and 6.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

46

Total Bridges

10.9%

Good

63%

Fair

6.5%

Poor Condition

Condition Distribution

Good

10.9% (5)

Fair

63% (29)

Poor

6.5% (3)

All Bridges (46)

Sort:

I 94

Over: SEP MONTANA ROAD

11M SW TERRY, Prairie, MT

Built 1971 ADT: 100

I 94

Over: SEP MONTANA ROAD

11M SW TERRY, Prairie, MT

Built 1971 ADT: 100

I 94

Over: INT POWDER RIVER

7M SW TERRY, Prairie, MT

Built 1971 ADT: 100

I 94

Over: INT POWDER RIVER

7M SW TERRY, Prairie, MT

Built 1971 ADT: 100

CONNS COULEE RD

Over: SEP JENS I 94 002

2M SW TERRY, Prairie, MT

Built 1971 ADT: 2,110

FALLON TOWER RD

Over: SEP I 94 003

2M NE FALLON, Prairie, MT

Built 1977 ADT: 2,191

FRONTAGE ROAD 168

Over: SEP I 94 001

2M SW FALLON, Prairie, MT

Built 1969 ADT: 1,914

TEN MILE RD

Over: INT TERRY-I 94

SE TERRY, Prairie, MT

Built 1971 ADT: 2,110

S 340

Over: INT FALLON-I 94

FALLON, Prairie, MT

Built 1978 ADT: 1,914

SPRING CREEK RD

Over: CABIN CREEK 011

13M NE MILDRED, Prairie, MT

Built 1933 Load: 6.4 t ADT: 100

COUNTY ROAD 119

Over: BR MAIN CANAL 038

5M NE FALLON, Prairie, MT

Built 1936 Load: 8.2 t ADT: 100

S 253

Over: YELLOWSTONE RIVER

1M NE TERRY, Prairie, MT

Built 1959 Load: 11.8 t ADT: 438

OLD HWY 10 W

Over: POWDER RIVER 040

6M SW TERRY, Prairie, MT

Built 1945 Load: 12.7 t ADT: 504

OLD HWY 10 E

Over: O`FALLON CREEK 043

1M W FALLON, Prairie, MT

Built 1948 Load: 16.3 t ADT: 504

OLD HWY 10 E

Over: RR 046

1M W FALLON, Prairie, MT

Built 1934 Load: 17.2 t ADT: 504

FRONTAGE ROAD 114

Over: YELLOWSTONE RIVER 015

1M NE FALLON, Prairie, MT

Built 1945 Load: 17.2 t ADT: 100

I 94

Over: YELLOWSTONE RIVER

1M N FALLON, Prairie, MT

Built 1978 Load: 18.5 t ADT: 2,191

I 94

Over: YELLOWSTONE RIVER

1M N FALLON, Prairie, MT

Built 1978 Load: 21.4 t ADT: 2,191

I 94

Over: RR

SW FALLON, Prairie, MT

Built 1977 Load: 22.7 t ADT: 2,191

I 94

Over: RR

SW FALLON, Prairie, MT

Built 1977 Load: 24.5 t ADT: 1,914

S 253

Over: BRACKETT CREEK

8M NW TERRY, Prairie, MT

Built 1935 Load: 24.5 t ADT: 402

S 253

Over: DRAINAGE

18M NW TERRY, Prairie, MT

Built 1940 Load: 26.3 t ADT: 366

OLD HWY 10 W

Over: WILLIAMS COULEE 007

13M SW TERRY, Prairie, MT

Built 1930 Load: 28.1 t ADT: 504

CB ROUTE RD

Over: BR MAIN CANAL 037

4M NE FALLON, Prairie, MT

Built 1966 Load: 28.1 t ADT: 80

S 253

Over: DRAINAGE

17M NW TERRY, Prairie, MT

Built 1940 Load: 28.1 t ADT: 366

S 253

Over: CEDAR CREEK

22M NW TERRY, Prairie, MT

Built 1947 Load: 29.0 t ADT: 366

S 253

Over: CEDAR CREEK

9M NW TERRY, Prairie, MT

Built 1935 Load: 31.8 t ADT: 402

OLD HWY 10 W

Over: DRAINAGE 022

1M SW TERRY, Prairie, MT

Built 1930 Load: 32.7 t ADT: 504

I 94

Over: RR

3M E TERRY, Prairie, MT

Built 1969 Load: 34.5 t ADT: 1,914

I 94

Over: RR

3M E TERRY, Prairie, MT

Built 1969 Load: 34.5 t ADT: 1,914

OLD HWY 10 W

Over: CONN`S COULEE 021

3M SW TERRY, Prairie, MT

Built 1930 Load: 34.5 t ADT: 504

CB ROUTE RD

Over: BR MAIN CANAL 036

3M NE FALLON, Prairie, MT

Built 1938 Load: 36.3 t ADT: 80

I 94

Over: O`FALLON CREEK

1M SW FALLON, Prairie, MT

Built 1969 Load: 38.1 t ADT: 1,914

I 94

Over: POWDER RIVER

7M SW TERRY, Prairie, MT

Built 1971 Load: 39.0 t ADT: 2,110

I 94

Over: POWDER RIVER

7M SW TERRY, Prairie, MT

Built 1971 Load: 39.0 t ADT: 2,110

S 253

Over: CHERRY CREEK

4M N TERRY, Prairie, MT

Built 2007 Load: 40.8 t ADT: 438

TEN MILE RD

Over: COAL CREEK 005

18M S TERRY, Prairie, MT

Built 1987 Load: 76.2 t ADT: 100

I 94

Over: ASH CREEK

2M E TERRY, Prairie, MT

Built 1969 Load: 99.9 t ADT: 3,828

WHITNEY CREEK RD

Over: O`FALLON CREEK 017

SW MILDRED, Prairie, MT

Built 2003 Load: 35.4 t ADT: 32

CABIN CREEK RD

Over: CABIN CREEK 008

13M NE MILDRED, Prairie, MT

Built 2012 Load: 36.3 t ADT: 100

I 94

Over: O`FALLON CREEK

1M SW FALLON, Prairie, MT

Built 1969 Load: 38.1 t ADT: 1,914

S 340

Over: PLUM COULEE CREEK

1M SE FALLON, Prairie, MT

Built 2020 Load: 39.0 t ADT: 211

CABIN CREEK RD

Over: CABIN CREEK

19M SE FALLON, Prairie, MT

Built 1988 Load: 41.7 t ADT: 27

CB ROUTE RD

Over: BUFFALO RAPIDS CANAL042

5M NE FALLON, Prairie, MT

Built 1939 Load: 4.5 t ADT: 80

MILWAUKEE RD

Over: YELLOWSTONE RIVER 030

4M SW TERRY, Prairie, MT

Built 1907 Load: 20.9 t ADT: 54

CB ROUTE RD

Over: BR MAIN CANAL 035

3M NE FALLON, Prairie, MT

Built 1928 Load: 33.6 t ADT: 80

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

P

Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.