State profile · Near median Poor share

Montana bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Montana, based on the FHWA National Bridge Inventory.

5,122
Public bridges
28.3%
Good condition
6.7%
Poor condition

Data updated May 2026

Total Bridges

5,122

Public highway bridges in Montana

Good Condition

28.3%

1,447 bridges rated 7-9

-21.7pp vs 50% benchmark

Poor Condition

6.7%

343 bridges whose lowest applicable component is rated 0-4

-0.3pp vs national avg 7.0%

Montana vs national bridge condition

Montana - Good condition share 28.3%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Montana - Poor-condition share 22.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Montana32.5%59.8%GoodFairPoor
Bridge inventory deck-condition mix - Montana (FHWA NBI)

Counties (56)

Beaverhead 217 Big Horn 136 Blaine 101 Broadwater 31 Carbon 77 Carter 39 Cascade 185 Chouteau 42 Custer 71 Daniels 32 Dawson 109 Deer Lodge 68 Fallon 35 Fergus 155 Flathead 195 Gallatin 207 Garfield 26 Glacier 68 Golden Valley 17 Granite 73 Hill 44 Jefferson 128 Judith Basin 48 Lake 111 Lewis and Clark 196 Liberty 11 Lincoln 190 Madison 84 McCone 44 Meagher 52 Mineral 152 Missoula 205 Musselshell 25 Park 124 Petroleum 26 Phillips 100 Pondera 96 Powder River 23 Powell 112 Prairie 46 Ravalli 149 Richland 96 Roosevelt 57 Rosebud 114 Sanders 116 Sheridan 66 Silver Bow 66 Stillwater 90 Sweet Grass 89 Teton 81 Toole 35 Treasure 26 Valley 103 Wheatland 26 Wibaux 24 Yellowstone 283

Montana vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Montana on the same metric.

NC

North Carolina

6.16% top marginal rate
Structure
Progressive
Burden @ $100K
$18,901

HI

Hawaii

6.47% top marginal rate
Structure
Progressive
Burden @ $100K
$1,206
Selected

MT

Montana

6.70% top marginal rate
Structure
Progressive
Burden @ $100K
$5,122

NY

New York

6.90% top marginal rate
Structure
Progressive
Burden @ $100K
$19,132

KY

Kentucky

7.06% top marginal rate
Structure
Progressive
Burden @ $100K
$14,554

Bridges Needing Most Attention in Montana

Six lowest-condition bridges in Montana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

HWY 91 N

Poor

Over: BIG HOLE RIVER 041

22M N DILLON, Beaverhead, MT

Built 1940 Load: 2.7 t ADT: 155

SLEEPY HOLLOW LN

Poor

Over: PRICKLY PEAR CREEK

3 M S MONTANA CITY, Jefferson, MT

Built 2010 Load: 2.7 t ADT: 100

CARBINE RD

Poor

Over: PABLO CANAL 026

4M W PABLO, Lake, MT

Built 1986 Load: 2.7 t ADT: 100

BOY SCOUT RD

Poor

Over: CLEARWATER RIVER 082

2M NW SEELEY LAKE, Missoula, MT

Built 1938 Load: 2.7 t ADT: 100

ASHLEY LAKE RD

Poor

Over: PABLO FEEDER CANAL 045

5M NE ST IGNATIUS, Lake, MT

Built 1965 Load: 3.0 t ADT: 100

SHEEP CR RD

Poor

Over: SHEEP CREEK 097

12M S CASCADE, Cascade, MT

Built 1950 Load: 3.6 t ADT: 68

All Bridges in Montana

PACKER CREEK RD

Fair

Over: PACKER CREEK 008

N SALTESE, Mineral, MT

Built 1957 Load: 32.7 t ADT: 100

I 90

Fair

Over: RR

5M W MISSOULA, Missoula, MT

Built 1966 Load: 32.7 t ADT: 9,435

I 90

Fair

Over: RR

5M W MISSOULA, Missoula, MT

Built 1966 Load: 32.7 t ADT: 9,435

I 90

Fair

Over: CLARK FORK RIVER

1.9M W BONNER, Missoula, MT

Built 1965 Load: 32.7 t ADT: 9,994

I 90

Fair

Over: CLARK FORK RIVER

1.9M W BONNER, Missoula, MT

Built 1965 Load: 32.7 t ADT: 9,994

W NINEMILE RD

Fair

Over: NINEMILE CREEK 030

8M NW FRENCHTOWN, Missoula, MT

Built 1975 Load: 32.7 t ADT: 477

PLACID LAKE RD

Fair

Over: CLEARWATER RIVER 078

3M S SEELEY LAKE, Missoula, MT

Built 1970 Load: 32.7 t ADT: 100

SAWMILL GULCH RD

Fair

Over: RATTLESNAKE CREEK 017

3M N MISSOULA, Missoula, MT

Built 1989 Load: 32.7 t ADT: 100

PINERIDGE RD

Fair

Over: HOLLAND CREEK 054

7M S CONDON, Missoula, MT

Built 1978 Load: 32.7 t ADT: 100

PINERIDGE RD

Fair

Over: SWAN RIVER 055

7M S CONDON, Missoula, MT

Built 1977 Load: 32.7 t ADT: 100

GUEST RANCH RD

Fair

Over: SWAN RIVER 056

1.5M S CONDON, Missoula, MT

Built 1978 Load: 32.7 t ADT: 100

MALLARD WAY

Fair

Over: FRENCHTOWN CANAL 100

10M NW MISSOULA, Missoula, MT

Built 1975 Load: 32.7 t ADT: 100

EXPRESSWAY RD

Fair

Over: GRANT CREEK 003

MISSOULA-EXPRESSWAY RD, Missoula, MT

Built 1981 Load: 32.7 t ADT: 7,797

INTERNATIONAL DR

Fair

Over: GRANT CREEK 005

MISSOULA-INTERNATIONAL DR, Missoula, MT

Built 1981 Load: 32.7 t ADT: 100

I 90

Fair

Over: MISSION CREEK

9.9M E LIVINGSTON, Park, MT

Built 1959 Load: 32.7 t ADT: 5,692

CONLIN RD

Fair

Over: EMIGRANT CREEK 075

3M SE EMMIGRANT, Park, MT

Built 2008 Load: 32.7 t ADT: 100

TRAIL CREEK RD

Fair

Over: IRRIGATION CANAL 001

1M N EMIGRANT, Park, MT

Built 1989 Load: 32.7 t ADT: 100

US 89

Fair

Over: FLATHEAD CREEK

1M N WILSALL, Park, MT

Built 1973 Load: 32.7 t ADT: 1,119

PETROLIA LAKE RD

Fair

Over: MCDONALD CREEK 014

6M E WINNETT, Petroleum, MT

Built 1980 Load: 32.7 t ADT: 100

BLAKESLEE RD

Fair

Over: CANAL 030

7M N TEIGEN, Petroleum, MT

Built 1978 Load: 32.7 t ADT: 100

1127: DRY FORK

Fair

Over: CAMP CREEK

4 mi SE of US 191, Phillips, MT

Built 1976 Load: 32.7 t ADT: 25

SAVOY RD

Fair

Over: DODSON NORTH CANAL 014

2M W DODSON, Phillips, MT

Built 1990 Load: 32.7 t ADT: 16

IRR - US 2

Fair

Over: PEOPLES CREEK

6M W DODSON, Phillips, MT

Built 1972 Load: 32.7 t ADT: 1,281

PRICE RD N

Fair

Over: PONDERA COULEE 007

9M E CONRAD, Pondera, MT

Built 1970 Load: 32.7 t ADT: 100

MIDWAY RD E

Fair

Over: PONDERA COULEE 003

16M NE BRADY, Pondera, MT

Built 1960 Load: 32.7 t ADT: 59

COALMINE RD

Fair

Over: DRAINAGE 032

15M W CONRAD, Pondera, MT

Built 1986 Load: 32.7 t ADT: 100

POWDERVILLE RD E

Fair

Over: CROW CREEK 004

23M NE BROADUS, Powder River, MT

Built 1986 Load: 32.7 t ADT: 48

S 484 FH 51

Fair

Over: OTTER CREEK

7M SE ASHLAND, Powder River, MT

Built 1963 Load: 32.7 t ADT: 77

C.WOOD LAKES RD

Fair

Over: MORRELL CREEK

COTTONWOOD LAKES, Powell, MT

Built 1954 Load: 32.7 t ADT: 50

SAWMILL RD

Fair

Over: CLARK FORK RIVER 026

GARRISON, Powell, MT

Built 2006 Load: 32.7 t ADT: 77

RAYMOND RD

Fair

Over: BLACKFOOT RIVER 077

6M S OVANDO, Powell, MT

Built 1997 Load: 32.7 t ADT: 100

S 271

Fair

Over: NEVADA CREEK

1M NE HELMVILLE, Powell, MT

Built 1947 Load: 32.7 t ADT: 302

OLD HWY 10 W

Fair

Over: DRAINAGE 022

1M SW TERRY, Prairie, MT

Built 1930 Load: 32.7 t ADT: 504

INDIAN PRAIRIE LP

Fair

Over: BIG CREEK 016

3M N VICTOR, Ravalli, MT

Built 1973 Load: 32.7 t ADT: 100

CHIEF VICTOR CAMP

Fair

Over: SWEATHOUSE CREEK 062

VICTOR, Ravalli, MT

Built 1993 Load: 32.7 t ADT: 100

SHEAFMAN CREEK RD

Fair

Over: MILL CREEK 106

5M S VICTOR, Ravalli, MT

Built 1973 Load: 32.7 t ADT: 100

AMBROSE CREEK RD

Fair

Over: BITTERROOT CANAL 093

6M SE FLORENCE, Ravalli, MT

Built 1986 Load: 32.7 t ADT: 100

MERIDIAN RD

Fair

Over: MILL CREEK 014

5M S VICTOR, Ravalli, MT

Built 1972 Load: 32.7 t ADT: 100

DUTCH HILL RD

Fair

Over: MILL CREEK 072

W OF WOODSIDE, Ravalli, MT

Built 1985 Load: 32.7 t ADT: 100

MID BURNT FORK RD

Fair

Over: NORTH BURNT FORK CK

10M SE STEVENSVILLE, Ravalli, MT

Built 2012 Load: 32.7 t ADT: 87

STEVENSVILLE AIRPO

Fair

Over: SUPPLY DITCH 092

1M NE STEVENSVILLE, Ravalli, MT

Built 1987 Load: 32.7 t ADT: 100

HOME ACRES RD

Fair

Over: SUPPLY DITCH 023

5M E VICTOR, Ravalli, MT

Built 1978 Load: 32.7 t ADT: 450

GRANTSDALE RD

Fair

Over: SKALKAHO CREEK 102

N GRANTSDALE, Ravalli, MT

Built 1972 Load: 32.7 t ADT: 471

HOBLITT LN

Fair

Over: SWEENEY CREEK 055

1M S FLORENCE, Ravalli, MT

Built 1972 Load: 32.7 t ADT: 100

GOLF COURSE RD

Fair

Over: BITTERROOT CANAL 045

3M SE HAMILTON, Ravalli, MT

Built 1986 Load: 32.7 t ADT: 100

TAMMANY LN

Fair

Over: BITTERROOT CANAL 046

4M SE HAMILTON, Ravalli, MT

Built 1988 Load: 32.7 t ADT: 100

FOLEY LN

Fair

Over: SKALKAHO CREEK 041

1M E GRANTSDALE, Ravalli, MT

Built 1972 Load: 32.7 t ADT: 100

GOLF COURSE RD

Fair

Over: BITTERROOT CANAL 044

2M SE GRANTSDALE, Ravalli, MT

Built 1984 Load: 32.7 t ADT: 100

OLD DARBY RD

Fair

Over: SLEEPING CHILD CREEK 075

6M S HAMILTON, Ravalli, MT

Built 1972 Load: 32.7 t ADT: 238

S SHOSHONE LOOP

Fair

Over: SKALKAHO CREEK 043

3M SE GRANTSDALE, Ravalli, MT

Built 1979 Load: 32.7 t ADT: 100

Showing 2,551-2,600 of 5,122 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

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

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.