Musselshell County, MT

25 public highway bridges

Musselshell County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Musselshell County, Montana contains 25 public highway bridges. Roughly 52% are rated “Good,” 44% “Fair,” and 4% “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.

25
Total Bridges
52%
Good
44%
Fair
4%
Poor Condition

Condition Distribution

Good
52% (13)
Fair
44% (11)
Poor
4% (1)

All Bridges (25)

4-H RD

Fair

Over: MUSSELSHELL RIVER 008

SE ROUNDUP, Musselshell, MT

Built 1970 Load: 9.0 t ADT: 528

DEAN CREEK RD

Fair

Over: MUSSELSHELL RIVER 004

15M SW ROUNDUP, Musselshell, MT

Built 1988 Load: 17.2 t ADT: 100

MUSSELSHELL RD

Fair

Over: MUSSELSHELL RIVER 015

6M W MUSSELSHELL, Musselshell, MT

Built 1916 Load: 22.6 t ADT: 34

US 12

Fair

Over: WILLOW CREEK

4M NE ROUNDUP, Musselshell, MT

Built 1999 Load: 25.4 t ADT: 573

HARVEY RD

Fair

Over: MUSSELSHELL RIVER 024

3M SW MELSTONE, Musselshell, MT

Built 2013 Load: 26.2 t ADT: 100

COUNTY ROAD 548

Fair

Over: MUSSELSHELL RIVER 025

ROUNDUP, Musselshell, MT

Built 2013 Load: 26.2 t ADT: 100

GOULDING CREEK RD

Fair

Over: MUSSELSHELL RIVER

7M SW ROUNDUP, Musselshell, MT

Built 1949 Load: 26.3 t ADT: 246

GOULDING CREEK RD

Fair

Over: HARPER`S COULEE

11M SW ROUNDUP, Musselshell, MT

Built 1954 Load: 28.1 t ADT: 136

US 12

Fair

Over: DEAN CREEK

6M E LAVINA, Musselshell, MT

Built 1935 Load: 29.0 t ADT: 438

US 12

Fair

Over: CURRANT CREEK

7M SW ROUNDUP, Musselshell, MT

Built 1936 Load: 29.9 t ADT: 438

US 12

Fair

Over: DRAINAGE

3M SW MELSTONE, Musselshell, MT

Built 2003 Load: 39.9 t ADT: 358

MAJERUS RD

Good

Over: BULL MTN RR 023

14M SE ROUNDUP, Musselshell, MT

Built 2009 Load: 14.5 t ADT: 36

NUMBER 4 RD

Good

Over: MUSSLESHELL RIVER 011

1M E ROUNDUP, Musselshell, MT

Built 1995 Load: 24.5 t ADT: 100

US 87

Good

Over: RAZOR CREEK

16M S KLEIN, Musselshell, MT

Built 1995 Load: 27.2 t ADT: 2,497

MELSTONE-CUSTER RD

Good

Over: MUSSELSHELL RIVER 017

1M SE MELSTONE, Musselshell, MT

Built 1992 Load: 28.1 t ADT: 115

S MUSSELSHELL RD

Good

Over: MUSSELSHELL RIVER

MUSSELSHELL, Musselshell, MT

Built 1960 Load: 29.0 t ADT: 156

US 87

Good

Over: MUSSELSHELL RIVER

ROUNDUP, Musselshell, MT

Built 1996 Load: 30.8 t ADT: 2,677

US 87

Good

Over: SOUTH WILLOW CREEK

7M N ROUNDUP, Musselshell, MT

Built 1976 Load: 30.8 t ADT: 1,155

US 12

Good

Over: STOCKPASS-DRAINAGE

3M NE MUSSELSHELL, Musselshell, MT

Built 2003 Load: 31.8 t ADT: 358

FARREL ST

Good

Over: HALF BREED CREEK

KLEIN, Musselshell, MT

Built 2021 Load: 35.4 t ADT: 100

US 12

Good

Over: HORSETHIEF CREEK

3M SW ROUNDUP, Musselshell, MT

Built 2015 Load: 35.4 t ADT: 665

US 87

Good

Over: PARK COULEE

16M S KLEIN, Musselshell, MT

Built 1995 Load: 39.9 t ADT: 2,497

US 12

Good

Over: DRAINAGE

12M W ROUNDUP, Musselshell, MT

Built 2006 Load: 99.9 t ADT: 438

US 12

Good

Over: DRAINAGE

1M N MUSSELSHELL, Musselshell, MT

Built 2003 Load: 99.9 t ADT: 477

HARVEY RD

Poor

Over: MUSSELSHELL RIVER 018

3M SW MELSTONE, Musselshell, MT

Built 1916 Load: 18.1 t ADT: 100

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.