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

158th Avenue SW

Good

Over: NORTH FORK GRAND RIVER

19 SOUTH OF RHAME, Bowman, ND

Built 2007 Load: 99.9 t ADT: 90

152nd AVENUE

Good

Over: TRIBUTARY GRAND RIVER

6 WEST 12 SOUTH BOWMAN, Bowman, ND

Built 2009 Load: 99.9 t ADT: 70

137TH AVENUE

Good

Over: TRIBUTARY CEDAR CREEK

6 NORTH BUFFALO SPRINGS, Bowman, ND

Built 2008 Load: 99.9 t ADT: 50

US HIGHWAY 12

Good

Over: BUFFALO CREEK

1 NW OF GASCOYNE, Bowman, ND

Built 2001 Load: 99.9 t ADT: 750

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

9 EAST 4 SOUTH OF ALICE, Cass, ND

Built 2008 Load: 99.9 t ADT: 20

COUNTY HIGHWAY

Good

Over: RUSH RIVER

1 SOUTH 2 EAST OF ERIE, Cass, ND

Built 1992 Load: 99.9 t ADT: 20

COUNTY HIGHWAY

Good

Over: ELM RIVER TRIB. DRAIN

3 EAST OF HUNTER, Cass, ND

Built 1975 Load: 99.9 t ADT: 20

COUNTY HIGHWAY

Good

Over: DRAIN

3 S 1 E OF HARWOOD, Cass, ND

Built 2005 Load: 99.9 t ADT: 960

COUNTY HIGHWAY

Good

Over: KNIFE RIVER

1 NORTH 12 WEST MANNING, Dunn, ND

Built 2005 Load: 99.9 t ADT: 50

ND HIGHWAY 1804

Good

Over: CREEK

22 SOUTH OF US 83, Emmons, ND

Built 1993 Load: 99.9 t ADT: 300

COUNTY HIGHWAY

Good

Over: DRAIN DITCH

7 WEST OF MANVEL, Grand Forks, ND

Built 1983 Load: 99.9 t ADT: 555

STATE MILL ROAD

Good

Over: ENGLISH COULEE

MILL ROAD-GRAND FORKS, Grand Forks, ND

Built 1996 Load: 99.9 t ADT: 1,350

S WASHINGTON ST

Good

Over: GF SO. END DRAINWAY

S WASHINGTON & 49TH-GF, Grand Forks, ND

Built 1999 Load: 99.9 t ADT: 2,400

COUNTY HIGHWAY

Good

Over: CREEK

8 N 6 W OF GOLDEN VALLEY, Mercer, ND

Built 2007 Load: 99.9 t ADT: 10

County Road 86

Good

Over: MUSKRAT CREEK

5 NORTH OF ALMONT, Morton, ND

Built 1999 Load: 99.9 t ADT: 155

COUNTY HIGHWAY

Good

Over: BRADY CREEK

5 WEST 6 NORTH HANNOVER, Oliver, ND

Built 1976 Load: 99.9 t ADT: 60

ND HIGHWAY 21

Good

Over: CREEK

6 EAST OF JCT. NO 67, Slope, ND

Built 2021 Load: 99.9 t ADT: 507

ND HIGHWAY 21

Good

Over: CREEK

8 EAST JCT ND 67, Slope, ND

Built 2021 Load: 99.9 t ADT: 507

102ND AVE SW

Good

Over: CREEK

7 SOUTH 2 WEST GLADSTONE, Stark, ND

Built 2004 Load: 99.9 t ADT: 15

11th Street S E

Good

Over: Arrowwood Bypass Channel

6.5 mi N-NE of Pingree ND, Stutsman, ND

Built 2005 Load: 99.9 t ADT: 30

15th Street S.E.

Good

Over: Arrowwood Bypass Channel

3.4 mi N-NE of Pingree ND, Stutsman, ND

Built 2002 Load: 99.9 t ADT: 4

17th Street S.E.

Good

Over: Arrowwood Bypass Channel

5.9 mi E of Pingree, ND, Stutsman, ND

Built 1993 Load: 99.9 t ADT: 4

21st Street SE

Good

Over: Arrowwood Bypass Channel

7.6 mi SE of Pingree, ND, Stutsman, ND

Built 1999 Load: 99.9 t ADT: 5

US HIGHWAY 281

Good

Over: BEAVER CREEK

7 NORTH OF ND 46, Stutsman, ND

Built 2003 Load: 99.9 t ADT: 1,945

ND HIGHWAY 66

Good

Over: CREEK

9 WEST OF US 281, Towner, ND

Built 2014 Load: 99.9 t ADT: 255

US HIGHWAY 281

Good

Over: CREEK

7 NORTH OF ND 17, Towner, ND

Built 2000 Load: 99.9 t ADT: 670

COUNTY HIGHWAY

Good

Over: ELM RIVER

1 SOUTH OF BLANCHARD, Traill, ND

Built 2015 Load: 99.9 t ADT: 20

COUNTY HIGHWAY

Good

Over: NORTH BRANCH ELM RIVER

5 SOUTH 5 EAST MAYVILLE, Traill, ND

Built 1985 Load: 99.9 t ADT: 96

COUNTY HIGHWAY

Good

Over: CREEK

1 SOUTH OF ADAMS, Walsh, ND

Built 2014 Load: 99.9 t ADT: 40

COUNTY HIGHWAY

Good

Over: CREEK

4 EAST 2 NORTH OF LANKIN, Walsh, ND

Built 2021 Load: 99.9 t ADT: 21

COUNTY ROAD 4

Good

Over: CREEK

4 EAST 3 NORTH OF GRAFTON, Walsh, ND

Built 1969 Load: 99.9 t ADT: 320

U S HIGHWAY 52

Good

Over: New Rockford Canal

5.3 mi SE of Harvey, ND, Wells, ND

Built 1984 Load: 99.9 t ADT: 130

COUNTY TRAIL

Poor

Over: COULEE

6 E 1 N MINNEWAUKAN, Benson, ND

Built 1942 ADT: 1

COUNTY HIGHWAY

Poor

Over: LITTLE SO. PEMBINA RIVER

1 SOUTH OF MT. CARMEL, Cavalier, ND

Built 1958 ADT: 15

IRRFT COUNTY HIWAY

Poor

Over: COULEE

1 N 12 W DEVILS LAKE, Ramsey, ND

Built 1935 ADT: 20

COUNTY HIGHWAY

Poor

Over: COULEE

10 WEST 3 NORTH WEBSTER, Ramsey, ND

Built 1937 ADT: 10

COUNTY HIGHWAY

Poor

Over: COULEE

9 W 7 S STARKWEATHER, Ramsey, ND

Built 1940 ADT: 5

COUNTY HIGHWAY

Poor

Over: ELM RIVER

1 SOUTH 4 EAST CLIFFORD, Traill, ND

Built 1965 ADT: 5

COUNTY HIGHWAY

Poor

Over: CREEK

5 EAST 2 NORTH MAYVILLE, Traill, ND

Built 1930 ADT: 10

COUNTY ROAD

Poor

Over: DES LACS RIVER

3 EAST 2 SOUTH CARPIO, Ward, ND

Built 1965 ADT: 25

COUNTY HIGHWAY

Poor

Over: SHEYENNE RIVER

3 SOUTH 1 WEST OF HARVEY, Wells, ND

Built 1955 ADT: 10

COUNTY HIGHWAY

Poor

Over: E FORK LITTLE MUDDY CRK

13 SOUTH ALAMO, Williams, ND

Built 1921 ADT: 24

COUNTY HIGHWAY

Poor

Over: CREEK

2 WEST 6 SOUTH OF VANG, Cavalier, ND

Built 1953 Load: 0.9 t ADT: 2

COUNTY HIGHWAY

Poor

Over: ANTELOPE CREEK

2 SOUTH 3 WEST DWIGHT, Richland, ND

Built 1920 Load: 1.1 t ADT: 20

COUNTY RIVER

Poor

Over: SOURIS RIVER

1 EAST 6 NORTH VOLTAIRE, McHenry, ND

Built 1902 Load: 1.9 t ADT: 25

COUNTY HIGHWAY

Poor

Over: DRAIN DITCH

6 EAST 4 SOUTH OF ST THOM, Pembina, ND

Built 1980 Load: 2.0 t ADT: 10

COUNTY HIGHWAY

Poor

Over: WILD RICE RIVER

2WEST 2SOUTH ABERCROMBIE, Richland, ND

Built 1926 Load: 2.1 t ADT: 20

COUNTY HIGHWAY

Poor

Over: WILD RICE RIVER

3 EAST 2 NORTH GREAT BEND, Richland, ND

Built 1923 Load: 2.1 t ADT: 20

COUNTY HIGHWAY

Poor

Over: COUNTY DRAIN

3 WEST 3 SOUTH FAIRMOUNT, Richland, ND

Built 1938 Load: 2.2 t ADT: 20

COUNTY ROAD

Poor

Over: WATERWAY LAKE

4 WEST 4 NORTH OF MAXBASS, Bottineau, ND

Built 1938 Load: 2.3 t ADT: 25

Showing 3,751-3,800 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.