Total Bridges
5,122
Public highway bridges in Montana
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
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
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
HI
Hawaii
6.47% top marginal rate
MT
Montana
6.70% top marginal rate
NY
New York
6.90% top marginal rate
KY
Kentucky
7.06% top marginal rate
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
PoorOver: BIG HOLE RIVER 041
22M N DILLON, Beaverhead, MT
Built 1940 Load: 2.7 t ADT: 155
SLEEPY HOLLOW LN
PoorOver: PRICKLY PEAR CREEK
3 M S MONTANA CITY, Jefferson, MT
Built 2010 Load: 2.7 t ADT: 100
CARBINE RD
PoorOver: PABLO CANAL 026
4M W PABLO, Lake, MT
Built 1986 Load: 2.7 t ADT: 100
BOY SCOUT RD
PoorOver: CLEARWATER RIVER 082
2M NW SEELEY LAKE, Missoula, MT
Built 1938 Load: 2.7 t ADT: 100
ASHLEY LAKE RD
PoorOver: PABLO FEEDER CANAL 045
5M NE ST IGNATIUS, Lake, MT
Built 1965 Load: 3.0 t ADT: 100
SHEEP CR RD
PoorOver: SHEEP CREEK 097
12M S CASCADE, Cascade, MT
Built 1950 Load: 3.6 t ADT: 68
All Bridges in Montana
US 87
FairOver: OTTER CREEK
5M SE BELT, Cascade, MT
Built 1959 Load: 50.8 t ADT: 1,078
N KENDRICK AVENUE
FairOver: GRAVEYARD COULEE 093
GLENDIVE-N KENDRICK AVE, Dawson, MT
Built 1965 Load: 50.8 t ADT: 1,524
MEADE AVENUE
FairOver: GRAVEYARD COULEE 094
GLENDIVE-MEADE AVE, Dawson, MT
Built 1965 Load: 50.8 t ADT: 851
US 12
FairOver: SANDSTONE CREEK
EAST EDGE PLEVNA, Fallon, MT
Built 1998 Load: 50.8 t ADT: 749
FDR 235
FairOver: BENCHMARK CR.
BENCHMARK CR., Judith Basin, MT
Built 1993 Load: 50.9 t ADT: 40
GEER RD
FairOver: E FK PORCUPINE CREEK 002
20M N NASHUA, Valley, MT
Built 1960 Load: 50.9 t ADT: 100
LOWER RD
FairOver: MUSTER CREEK 001
1M SW KINSEY, Custer, MT
Built 1994 Load: 51.7 t ADT: 100
RD 36
FairOver: BN RAILROAD
WOLF CREEK MP 24.3, Lincoln, MT
Built 1968 Load: 51.8 t ADT: 99
SNOWLINE LN
FairOver: ASHLEY CREEK 168
3M SE KALISPELL, Flathead, MT
Built 2003 Load: 52.6 t ADT: 100
IRR BIA RTE 7
FairOver: POPLAR RIVER
2 KM S OF POPLAR, Roosevelt, MT
Built 2002 Load: 52.6 t ADT: 481
I 90
FairOver: SPRING CREEK
1M NW GREYCLIFF, Sweet Grass, MT
Built 1980 Load: 52.6 t ADT: 12,830
S 59
FairOver: PUMPKIN CREEK
14M SE MILES CITY, Custer, MT
Built 1962 Load: 53.5 t ADT: 673
ROAD 261
FairOver: SAND CREEK 038
8M SW GLENDIVE, Dawson, MT
Built 1988 Load: 53.5 t ADT: 579
COUNTY ROAD 549
FairOver: S FORK BURNS CR 065
10M NW INTAKE, Dawson, MT
Built 1992 Load: 53.5 t ADT: 100
S 43
FairOver: SEYMOUR CREEK
12M NW WISE RIVER, Deer Lodge, MT
Built 2006 Load: 53.5 t ADT: 454
STAR MEADOW RD
FairOver: LOGAN CREEK 085
6M S OLNEY, Flathead, MT
Built 1992 Load: 53.5 t ADT: 100
S 69
FairOver: BOULDER RIVER
BOULDER, Jefferson, MT
Built 2003 Load: 53.5 t ADT: 2,960
TOM MINER CREEK RD
FairOver: TOM MINER CREEK
18M NW GARDINER, Park, MT
Built 2018 Load: 53.5 t ADT: 100
US 2
FairOver: WHATELY CREEK
6M SE GLASGOW, Valley, MT
Built 1987 Load: 53.5 t ADT: 2,100
LESLIE RD
FairOver: ELBOW CREEK 036
2M SW EDGAR, Carbon, MT
Built 1913 Load: 54.4 t ADT: 100
S 200
FairOver: MAXWELL COULEE
22M E JORDAN, Garfield, MT
Built 2012 Load: 54.4 t ADT: 469
FOREST ROAD
FairOver: GLACIER CREEK
ELK CREEK ROAD, Missoula, MT
Built 1981 Load: 55.4 t ADT: 10
NO DATA ENTERED
FairOver: DALY CR
NO DATA ENTERED, Ravalli, MT
Built 1947 Load: 56.1 t ADT: 45
ELK CREEK RD
FairOver: ELK CREEK 051
4M S HERON, Sanders, MT
Built 1988 Load: 56.2 t ADT: 100
I 15
FairOver: RR-LOCAL
BUTTE, Silver Bow, MT
Built 2012 Load: 56.2 t ADT: 6,807
FOREST ROAD
FairOver: LOGAN CREEK
TALLY LAKE ROAD, Flathead, MT
Built 1974 Load: 57.7 t ADT: 60
I 94
FairOver: GRAVEYARD CREEK
1M E HATHAWAY, Rosebud, MT
Built 1962 Load: 58.1 t ADT: 2,602
RD 386
FairOver: ST REGIS RIVER
BIG CR RD 386, Mineral, MT
Built 1972 Load: 58.3 t ADT: 50
STORY HILL RD
FairOver: ROCKY CREEK
2M E BOZEMAN, Gallatin, MT
Built 2005 Load: 58.6 t ADT: 100
LOWER RD
FairOver: COYOTE CREEK 085
1M SW DENTON, Fergus, MT
Built 1977 Load: 59.1 t ADT: 73
RD 4785
FairOver: BIG CHERRY CR
UPPER BIG CHERRY, Lincoln, MT
Built 1966 Load: 59.3 t ADT: 50
US 93
FairOver: MUD CREEK
4M N RONAN, Lake, MT
Built 2008 Load: 59.9 t ADT: 5,692
IRR BIA RTE 1015
FairOver: HICKS CREEK
26 KM EAST OF ARLEE, Missoula, MT
Built 2001 Load: 59.9 t ADT: 20
S 200
FairOver: DRAINAGE
6M E JORDAN, Garfield, MT
Built 2004 Load: 60.8 t ADT: 469
S 294
FairOver: MARTINSDALE SUPPLY CANAL
MARTINSDALE, Meagher, MT
Built 2010 Load: 60.8 t ADT: 276
PENDROY RD
FairOver: DRAINAGE
5M W CONRAD, Pondera, MT
Built 1955 Load: 60.8 t ADT: 480
US 93
FairOver: MUD CREEK
4M N RONAN, Lake, MT
Built 2007 Load: 63.5 t ADT: 5,692
US 287
FairOver: O`DELL CREEK
SE ENNIS, Madison, MT
Built 2001 Load: 63.5 t ADT: 4,210
COAL MINE RD
FairOver: FT. BELKNAP CANAL 01
5M NW CHINOOK, Blaine, MT
Built 1933 Load: 63.8 t ADT: 41
US 93
FairOver: WILDLIFE UNDERPASS
10M N WYE JCT, Missoula, MT
Built 2009 Load: 64.4 t ADT: 8,184
NORTH ENTRANCE ROA
FairOver: GARDNER RIVER
1.5 MI. SOUTH OF NORTH EN, Park, MT
Built 1957 Load: 64.4 t ADT: 2,294
US 2
FairOver: RICHARDSON COULEE
4M NW GLASGOW, Valley, MT
Built 1979 Load: 64.4 t ADT: 1,409
FOREST ROAD
FairOver: LOGAN CREEK
TALLY LAKE ROAD, Flathead, MT
Built 1976 Load: 64.5 t ADT: 60
IRR BIA RTE 127
FairOver: MILL POCKET-CAMAS CANAL
6.3KM NW OF NIARADA, Sanders, MT
Built 2004 Load: 65.3 t ADT: 10
NORTH LAKE MCDONAL
FairOver: CREEK
12.7 miles northeast of U, Flathead, MT
Built 2001 Load: 67.1 t ADT: 50
NORTH LAKE MCDONAL
FairOver: CREEK
12.7 miles northeast of U, Flathead, MT
Built 2001 Load: 67.1 t ADT: 50
NO DATA ENTERED
FairOver: WEST FORK SPRUCE CREEK
NO DATA ENTERED, Powell, MT
Built 2020 Load: 68.0 t ADT: 50
NO DATA ENTERED
FairOver: EF SPRUCE CREEK
NO DATA ENTERED, Powell, MT
Built 2020 Load: 69.0 t ADT: 50
US 87
FairOver: OTTER CREEK
1M SE RAYNESFORD, Judith Basin, MT
Built 1964 Load: 69.9 t ADT: 2,242
NO DATA ENTERED
FairOver: STORM LAKE CREEK
NO DATA ENTERED, Deer Lodge, MT
Built 2011 Load: 70.0 t ADT: 10
Showing 3,201-3,250 of 5,122 bridges
Related
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.