State profile · Above national median SD

North Dakota bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in North Dakota — drawn straight from the FHWA National Bridge Inventory.

4,242
Public bridges
39.7%
Good condition
10.8%
Poor condition
10.8%
Structurally deficient

Total Bridges

4,242

Public highway bridges in North Dakota

Good Condition

39.7%

1,685 bridges rated 7-9

-10.3pp vs 50% benchmark

Poor Condition

10.8%

460 bridges rated 0-4

Structurally Deficient

10.8%

460 bridges flagged for repair priority

3.9pp vs national avg 7.0%

North Dakota vs national bridge condition

North Dakota — Good condition share 39.7%
National avg

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

North Dakota — Structurally deficient share 36.1%
National avg

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

Condition Distribution

Bridge inventory deck-condition mix — North Dakota (FHWA NBI)

North Dakota39.72182932578972%42.5978312116926%10.843941537010844%10.843941537010844%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — North Dakota (FHWA NBI)

Counties (53)

Adams 45 Barnes 79 Benson 40 Billings 60 Bottineau 120 Bowman 68 Burke 29 Burleigh 113 Cass 369 Cavalier 66 Dickey 43 Divide 13 Dunn 74 Eddy 27 Emmons 67 Foster 19 Golden Valley 34 Grand Forks 334 Grant 60 Griggs 21 Hettinger 64 Kidder 10 LaMoure 60 Logan 13 McHenry 112 McIntosh 11 McKenzie 131 McLean 57 Mercer 72 Morton 271 Mountrail 27 Nelson 23 Oliver 24 Pembina 203 Pierce 5 Ramsey 48 Ransom 35 Renville 24 Richland 197 Rolette 18 Sargent 30 Sheridan 8 Sioux 22 Slope 41 Stark 157 Steele 94 Stutsman 78 Towner 58 Traill 151 Walsh 253 Ward 123 Wells 41 Williams 100

North Dakota vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below North Dakota on the same metric.

02

Alaska

10.12% top marginal rate
Structure
Progressive
Burden @ $100K
$909

42

Pennsylvania

10.50% top marginal rate
Structure
Progressive
Burden @ $100K
$14,867
Selected

38

North Dakota

10.84% top marginal rate
Structure
Progressive
Burden @ $100K
$4,242

22

Louisiana

11.00% top marginal rate
Structure
Progressive
Burden @ $100K
$12,699

72

Puerto Rico

11.98% top marginal rate
Structure
Progressive
Burden @ $100K
$2,387

Bridges Needing Most Attention in North Dakota

Six lowest-condition bridges in North Dakota, ranked by composite NBI rating. Each is inspected at least every 24 months.

TRAIL

Structurally Deficient

Over: CYPRESS CREEK

5 NORTH 1 EAST OF CALVIN, Cavalier, ND

Built 1950 Load: 0.9 t ADT: 2

COUNTY HIGHWAY

Poor

Over: CREEK

2 WEST 6 SOUTH OF VANG, Cavalier, ND

Built 1953 Load: 0.9 t ADT: 2

COUNTY ROAD

Structurally Deficient

Over: JAMES RIVER

NORTH OF LAMOURE, LaMoure, ND

Built 1910 Load: 1.1 t ADT: 50

COUNTY HIGHWAY

Poor

Over: ANTELOPE CREEK

2 SOUTH 3 WEST DWIGHT, Richland, ND

Built 1920 Load: 1.1 t ADT: 20

COUNTY HIGHWAY

Structurally Deficient

Over: LITTLE MUDDY RIVER

2 WEST 3 SOUTH ALAMO, Williams, ND

Built 1920 Load: 1.5 t ADT: 24

COUNTY HIGHWAY

Structurally Deficient

Over: LITTLE MUDDY RIVER

1 EAST 3 SOUTH ALAMO, Williams, ND

Built 1920 Load: 1.5 t ADT: 20

All Bridges in North Dakota

COUNTY HIGHWAY

Good

Over: LITTLE GOOSE RIVER

9 WEST 2 SOUTH LARIMORE, Grand Forks, ND

Built 2000 Load: 36.2 t ADT: 35

COUNTY HIGHWAY

Good

Over: WILD RICE RIVER

2 EAST 1 SOUTH MANTADOR, Richland, ND

Built 2019 Load: 36.2 t ADT: 20

ND HIGHWAY 60

Good

Over: MILLER CREEK

12 SOUTH OF N.D. HWY 5, Bottineau, ND

Built 2013 Load: 36.3 t ADT: 560

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

1 WEST 2 SOUTH LYNCHBURG, Cass, ND

Built 2013 Load: 36.3 t ADT: 20

COUNTY HIGHWAY

Good

Over: IRRIGATION CANAL

1 NORTH 1 EAST OF DORE, McKenzie, ND

Built 2014 Load: 36.3 t ADT: 20

US HIGHWAY 12

Good

Over: FLAT CREEK

2 WEST JCT. ND 8 SOUTH, Adams, ND

Built 2007 Load: 36.5 t ADT: 1,180

66th St SW

Good

Over: CREEK

1 EAST 2 NORTH OF REGENT, Hettinger, ND

Built 1971 Load: 36.5 t ADT: 10

U.S. HWY 83 BYPASS

Good

Over: MOUSE RIVER

MINOT WEST BYPASS, Ward, ND

Built 2018 Load: 36.5 t ADT: 5,600

COUNTY HIGHWAY

Good

Over: THIRD CREEK

6 EAST 19 SOUTH MEDORA, Billings, ND

Built 1997 Load: 36.6 t ADT: 25

COUNTY HIGHWAY

Good

Over: CASS COUNTY DRAIN 27

2 EAST 4 NORTH OF HORACE, Cass, ND

Built 1999 Load: 36.6 t ADT: 2,000

TOWNSHIP RD.

Good

Over: OAKES CANAL W0-4

5 SOUTH & 1 EAST OF OAKES, Dickey, ND

Built 1986 Load: 36.6 t ADT: 50

TWP. RD

Good

Over: OAKES CANAL W0-5

6 SOUTH OF OAKES, Dickey, ND

Built 1986 Load: 36.6 t ADT: 25

113TH AVE SW

Good

Over: KNIFE RIVER

2 NORTH 6 WEST OF MANNING, Dunn, ND

Built 1999 Load: 36.6 t ADT: 55

89TH ST SE

Good

Over: CREEK

8 WEST OF STRASBURG, Emmons, ND

Built 1999 Load: 36.6 t ADT: 350

INTERSTATE 29

Good

Over: BNSF SEPARATION OVERHEAD

10 NORTH OF ND 13, Richland, ND

Built 1975 Load: 36.6 t ADT: 2,600

ND HIGHWAY 22

Good

Over: GREEN RIVER

4 NORTH OF I-94, Stark, ND

Built 2012 Load: 36.6 t ADT: 7,155

COUNTY HIGHWAY

Good

Over: NORTH BRANCH GOOSE RIVER

7 EAST 1 NORTH OF FINLEY, Steele, ND

Built 1972 Load: 36.6 t ADT: 40

ND HIGHWAY 22

Good

Over: CREEK

2 SOUTH OF KILLDEER, Dunn, ND

Built 1986 Load: 36.7 t ADT: 1,680

76TH ST SE

Good

Over: BEAVER CREEK

4 WEST 13 SOUTH NAPOLEON, Logan, ND

Built 1984 Load: 36.7 t ADT: 25

72ND ST SE

Good

Over: BEAVER CREEK

2 WEST 9 SOUTH NAPOLEON, Logan, ND

Built 1988 Load: 36.7 t ADT: 24

COUNTY HIGHWAY

Good

Over: LITTLE KNIFE RIVER

7 NORTHWEST OF NEWTOWN, Mountrail, ND

Built 1995 Load: 36.7 t ADT: 20

US HIGHWAY 2

Good

Over: BNRR

9 WEST OF N.D. 41, Ward, ND

Built 1981 Load: 36.7 t ADT: 2,040

COUNTY HIGHWAY

Good

Over: N ROCKFORD CANAL NR2-2

6 NORTH 11 EAST FESSENDEN, Wells, ND

Built 1990 Load: 36.7 t ADT: 110

COUNTY HIGHWAY

Good

Over: LITTLE MUDDY RIVER

1 WEST 11 SOUTH APPAM, Williams, ND

Built 2021 Load: 36.7 t ADT: 150

33RD ST

Good

Over: HAILSTONE CREEK

9 EAST 8 NORTH GLEN ULLIN, Morton, ND

Built 2000 Load: 36.8 t ADT: 25

ND HIGHWAY 20

Good

Over: CREEK

1 SOUTH WEBSTER, Ramsey, ND

Built 1966 Load: 36.8 t ADT: 1,370

55 TH STREET EAST

Good

Over: BNSF RAILROAD

MINOT 55 TH ST E & 4T, Ward, ND

Built 2013 Load: 36.8 t ADT: 1,230

100TH ST SE

Good

Over: COUNTY DRAIN NO. 35

6 SOUTH OF FAIRMOUNT, Richland, ND

Built 2015 Load: 36.9 t ADT: 37

COUNTY HIGHWAY

Good

Over: GOOSE RIVER

12 EAST 7 NORTH FINLEY, Steele, ND

Built 2017 Load: 36.9 t ADT: 305

COUNTY ROAD

Good

Over: FOREST RIVER

2 E 1 S OF FORDVILLE, Walsh, ND

Built 2022 Load: 36.9 t ADT: 160

COUNTY HIGHWAY

Good

Over: N ROCKFORD CANAL NR1-7

6 NORTH 2 WEST FESSENDEN, Wells, ND

Built 1983 Load: 36.9 t ADT: 10

COUNTY HIGHWAY

Good

Over: N ROCKFORD CANAL NR1-9

6 NORTH 3 EAST FESSENDEN, Wells, ND

Built 1983 Load: 36.9 t ADT: 10

WEST FRONT STREET

Good

Over: DRAINAGE DITCH

W FRONT STREET WILLISTON, Williams, ND

Built 2017 Load: 36.9 t ADT: 1,200

COUNTY HIGHWAY

Good

Over: WILD RICE RIVER

5 WEST 3 SOUTH WYNDMERE, Richland, ND

Built 1997 Load: 37.0 t ADT: 20

COUNTY HIGHWAY

Good

Over: CREEK

5 WEST OF HOPE, Steele, ND

Built 1994 Load: 37.0 t ADT: 20

ND HIGHWAY 1804

Good

Over: MILLER CREEK

1 EAST OF TRENTON, Williams, ND

Built 1989 Load: 37.0 t ADT: 2,010

COUNTY HIGHWAY

Good

Over: STARKWEATHER COULEE

4 E 1 N STARKWEATHER, Ramsey, ND

Built 1990 Load: 37.1 t ADT: 50

40TH ST SE

Good

Over: BUFFALO CREEK

3 WEST 2 NORTH EMBDEN, Cass, ND

Built 2016 Load: 37.2 t ADT: 59

COUNTY HIGHWAY

Good

Over: CREEK

4 NORTH OF DURBIN, Cass, ND

Built 2021 Load: 37.2 t ADT: 155

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

1 EAST 3 SOUTH OF CHAFFEE, Cass, ND

Built 2019 Load: 37.2 t ADT: 20

COUNTY ROAD

Good

Over: JAMES RIVER

2 EAST 1 SOUTH OF DICKEY, LaMoure, ND

Built 1986 Load: 37.2 t ADT: 24

ND HIGHWAY 89

Good

Over: TONGUE RIVER

2 SOUTH OF JCT ND 5, Pembina, ND

Built 1970 Load: 37.2 t ADT: 170

IRR BIA RTE 6

Good

Over: CANNONBALL RIVER

1404KM WEST OF CR 6, Sioux, ND

Built 1999 Load: 37.2 t ADT: 197

GRIFFIN ROAD

Good

Over: TRIBUTARY GRAND RIVER

17 SOUTH OF GRIFFEN, Bowman, ND

Built 2013 Load: 37.3 t ADT: 70

5TH AVE SW

Good

Over: CREEK

11 WEST 5 SOUTH OF LINTON, Emmons, ND

Built 2011 Load: 37.3 t ADT: 25

COUNTY HIGHWAY

Good

Over: ENGLISH COULEE DIVERSION

2 W 1 S JCT US 2 & I 29, Grand Forks, ND

Built 2003 Load: 37.3 t ADT: 250

ND HIGHWAY 49

Good

Over: HEART BUTTE CREEK

6 SOUTH OF GLEN ULLIN, Morton, ND

Built 1988 Load: 37.3 t ADT: 680

COUNTY ROAD

Good

Over: DITCH

4 SOUTH OF GRAFTON, Walsh, ND

Built 1975 Load: 37.4 t ADT: 26

COUNTY HIGHWAY

Good

Over: LITTLE MUDDY RIVER

3 WEST 2 SOUTH APPAM, Williams, ND

Built 2021 Load: 37.5 t ADT: 25

COUNTY HIGHWAY

Good

Over: RAYMOND COULEE

3 EAST 3 NORTH MAPLETON, Cass, ND

Built 1989 Load: 37.6 t ADT: 60

Showing 2,951-3,000 of 4,242 bridges

Related

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

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.