Sheridan County, MT

66 public highway bridges

Sheridan County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Sheridan County, Montana contains 66 public highway bridges. Roughly 16.7% are rated “Good,” 80.3% “Fair,” and 3% “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.

66
Total Bridges
16.7%
Good
80.3%
Fair
3%
Poor Condition

Condition Distribution

Good
16.7% (11)
Fair
80.3% (53)
Poor
3% (2)

All Bridges (66)

S 5

Fair

Over: MARRON CREEK

1M E PLENTYWOOD, Sheridan, MT

Built 1983 Load: 86.2 t ADT: 1,481

S 5

Fair

Over: PLENTYWOOD CREEK

5M W PLENTYWOOD, Sheridan, MT

Built 2001 Load: 89.8 t ADT: 585

S 16

Fair

Over: ATOR CREEK

3M NW ANTELOPE, Sheridan, MT

Built 1984 Load: 99.9 t ADT: 1,481

E LAKE HWY

Good

Over: LAKE CREEK 060

9M E MEDICINE LAKE, Sheridan, MT

Built 1965 Load: 27.2 t ADT: 108

S 5

Good

Over: ANTELOPE CREEK

2M S ANTELOPE, Sheridan, MT

Built 1986 Load: 27.2 t ADT: 1,125

BEAVER CREEK RD

Good

Over: BEAVER CREEK 008

11M N REDSTONE, Sheridan, MT

Built 1993 Load: 29.0 t ADT: 100

SANDHILLS RD

Good

Over: SAND CREEK 057

15M E MEDICINE LAKE, Sheridan, MT

Built 1988 Load: 32.7 t ADT: 100

LAKE CREEK RD

Good

Over: LAKE CREEK 078

20M E PLENTYWOOD, Sheridan, MT

Built 1983 Load: 32.7 t ADT: 100

LOST CREEK RD

Good

Over: LOST CREEK 050

2M S HOMESTEAD, Sheridan, MT

Built 1991 Load: 32.7 t ADT: 100

S 5

Good

Over: REDSTONE CREEK

2M SE REDSTONE, Sheridan, MT

Built 2011 Load: 32.7 t ADT: 508

S 5

Good

Over: MCCOY CREEK

3M W PLENTYWOOD, Sheridan, MT

Built 2001 Load: 32.7 t ADT: 585

MIDBY RD

Good

Over: BIG MUDDY CREEK 024

7M W PLENTYWOOD, Sheridan, MT

Built 1987 Load: 35.4 t ADT: 22

S ARCHER RD

Good

Over: BIG MUDDY CREEK 016

7M SE REDSTONE, Sheridan, MT

Built 2004 Load: 36.3 t ADT: 17

COUNTY ROAD 468

Good

Over: DIVERSION CANAL 079

1M W MEDICINE LAKE, Sheridan, MT

Built 2004 Load: 38.3 t ADT: 68

W LAKE RD

Poor

Over: BIG MUDDY CREEK 046

3M W MEDICINE LAKE, Sheridan, MT

Built 1950 Load: 18.1 t ADT: 68

S 5

Poor

Over: DAHL CREEK

12M SW WESTBY, Sheridan, MT

Built 1939 Load: 23.6 t ADT: 307

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

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.