Cascade County, MT

185 public highway bridges

Cascade County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cascade County, Montana contains 185 public highway bridges. Roughly 28.6% are rated “Good,” 42.2% “Fair,” and 3.8% “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.

185
Total Bridges
28.6%
Good
42.2%
Fair
3.8%
Poor Condition

Condition Distribution

Good
28.6% (53)
Fair
42.2% (78)
Poor
3.8% (7)

All Bridges (185)

US 89 FH 32

Good

Over: BELT CREEK

3M S BELT, Cascade, MT

Built 1968 Load: 29.9 t ADT: 702

MEYER AVE

Good

Over: SAND COULEE CREEK 081

1M S TRACY, Cascade, MT

Built 1950 Load: 30.8 t ADT: 100

US 89

Good

Over: GREENFIELDS SOUTH CANAL

5M E FAIRFIELD, Cascade, MT

Built 1960 Load: 30.8 t ADT: 1,747

S 200

Good

Over: MILL COULEE CREEK

1M NE SUN RIVER, Cascade, MT

Built 1996 Load: 30.8 t ADT: 2,418

US 89 FH 32

Good

Over: BELT CREEK

6M S BELT, Cascade, MT

Built 1968 Load: 30.8 t ADT: 702

WILLOW CREEK RD

Good

Over: LITTLE BELT CREEK 100

12M E BELT, Cascade, MT

Built 1950 Load: 31.8 t ADT: 157

OFF RAMP TO 14TH S

Good

Over: RR

GREAT FALLS, Cascade, MT

Built 1996 Load: 32.7 t ADT: 3,357

HUGHESVILLE RD

Good

Over: DRY FORK BELT CREEK 079

3M E MONARCH, Cascade, MT

Built 1962 Load: 32.7 t ADT: 100

UPPER MILLEGAN RD

Good

Over: HOUND CREEK 028

15M SE CASCADE, Cascade, MT

Built 1975 Load: 32.7 t ADT: 79

ULM VAUGHN RD

Good

Over: SUN RIVER 057

2M S VAUGHN, Cascade, MT

Built 2013 Load: 33.6 t ADT: 695

US 87-US 89

Good

Over: BELT CREEK

2M S BELT, Cascade, MT

Built 2022 Load: 35.4 t ADT: 2,931

BRANCH I 15-U.S. 8

Good

Over: RR

GREAT FALLS, Cascade, MT

Built 1967 Load: 35.4 t ADT: 6,196

US 89

Good

Over: MUDDY CREEK

VAUGHN, Cascade, MT

Built 2002 Load: 35.4 t ADT: 5,533

MANCHESTER RD S

Good

Over: SUN RIVER 055

MANCHESTER, Cascade, MT

Built 2001 Load: 36.3 t ADT: 203

US 89 FH 32

Good

Over: DRY FORK BELT CREEK

MONARCH, Cascade, MT

Built 2014 Load: 37.2 t ADT: 448

HIGHWOOD RD

Good

Over: BELT CREEK

6M S HIGHWOOD, Cascade, MT

Built 2009 Load: 37.2 t ADT: 456

US 87-US 89

Good

Over: BOX ELDER CREEK

8M SE GREAT FALLS, Cascade, MT

Built 1989 Load: 38.1 t ADT: 4,303

HORSE RANCH ROAD

Good

Over: ARMELLS CREEK

3.9 miles north of Irish, Cascade, MT

Built 2017 Load: 43.5 t ADT: 20

BRIDGE STREET

Good

Over: BELT CREEK 012

BELT-BRIDGE STREET, Cascade, MT

Built 2012 Load: 44.5 t ADT: 1,640

OVERLOOK DR

Good

Over: RR BY WATERWORKS

GREAT FALLS-OVERLOOK DR, Cascade, MT

Built 2009 Load: 45.4 t ADT: 5,117

US 87

Good

Over: OTTER CREEK

5M SE BELT, Cascade, MT

Built 1959 Load: 46.3 t ADT: 1,078

US 87

Good

Over: OTTER CREEK

3M SE BELT, Cascade, MT

Built 1959 Load: 47.2 t ADT: 1,078

US 87

Good

Over: OTTER CREEK

4M SE BELT, Cascade, MT

Built 1959 Load: 47.2 t ADT: 1,078

US 87

Good

Over: OTTER CREEK

3M SE BELT, Cascade, MT

Built 1959 Load: 49.9 t ADT: 1,078

US 87

Good

Over: OTTER CREEK

5M SE BELT, Cascade, MT

Built 1959 Load: 50.8 t ADT: 1,078

E HIGHWOOD RD

Good

Over: LITTLE BELT CREEK 004

3M E BELT, Cascade, MT

Built 1971 Load: 51.2 t ADT: 100

EWING RD

Good

Over: LITTLE BELT CREEK 098

4M N BELT, Cascade, MT

Built 1973 Load: 59.0 t ADT: 100

GIANT SPRINGS RD

Good

Over: RIVERS EDGE TRAIL

GREAT FALLS, Cascade, MT

Built 2002 Load: 99.9 t ADT: 1,068

SHEEP CR RD

Poor

Over: SHEEP CREEK 097

12M S CASCADE, Cascade, MT

Built 1950 Load: 3.6 t ADT: 68

TRULY CUTOFF RD

Poor

Over: SMITH RIVER 033

7M SE ULM, Cascade, MT

Built 1908 Load: 6.8 t ADT: 100

NFSR 839

Poor

Over: BELT CREEK

8.4 MI. W OF US 89 JCT, Cascade, MT

Built 1954 Load: 12.7 t ADT: 46

FDR 267

Poor

Over: JEFFERSON CREEK

0.1 MI EAST US89/267 JCT, Cascade, MT

Built 1957 Load: 19.1 t ADT: 50

NFSR 487

Poor

Over: S FK JUDITH RIVER

18.6 MI. SW FROM UTICA, Cascade, MT

Built 1958 Load: 20.1 t ADT: 65

OLD US HWY 91

Poor

Over: LITTLE MUDDY CREEK 090

6M N CASCADE, Cascade, MT

Built 1923 Load: 26.3 t ADT: 100

US 89 FH 32

Poor

Over: BELT CREEK

9M S BELT, Cascade, MT

Built 1968 Load: 30.8 t ADT: 1,144

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.