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

ND HIGHWAY 66

Good

Over: WOLF CREEK

1 EAST OF ND 3, Rolette, ND

Built 1961 Load: 46.4 t ADT: 510

COUNTY HIGHWAY

Good

Over: COULEE

4 NORTH 4 WEST CANDO, Towner, ND

Built 2000 Load: 46.4 t ADT: 20

COUNTY HIGHWAY

Good

Over: SHEYENNE RIVER

3 EAST 5 NORTH KINDRED, Cass, ND

Built 2014 Load: 46.6 t ADT: 50

ND HIGHWAY 13

Good

Over: MAPLE CREEK

3 EAST OF EDGELEY, LaMoure, ND

Built 2004 Load: 46.6 t ADT: 1,725

COUNTY HIGHWAY 10

Good

Over: CREEK

2 SOUTH OF RUTLAND, Sargent, ND

Built 2010 Load: 46.6 t ADT: 260

COUNTY HIGHWAY

Good

Over: ELM RIVER

3 WEST 1 NORTH GRANDIN, Traill, ND

Built 2017 Load: 46.6 t ADT: 20

ND HIGHWAY 8

Good

Over: CEDAR CREEK

11 NORTH JCT. US 12, Adams, ND

Built 2011 Load: 46.7 t ADT: 355

COUNTY HWY 21

Good

Over: CREEK

8 NORTH OF VALLEY CITY, Barnes, ND

Built 2011 Load: 46.8 t ADT: 700

6TH AVE SE

Good

Over: BEAVER CREEK

1 WEST OF LINTON, Emmons, ND

Built 1981 Load: 46.9 t ADT: 120

COUNTY HIGHWAY

Good

Over: CREEK

4 WEST 1 SOUTH WHEATLAND, Cass, ND

Built 2015 Load: 47.0 t ADT: 20

COUNTY HIGHWAY

Good

Over: DRAIN

4 WEST OF CASSELTON, Cass, ND

Built 2014 Load: 47.0 t ADT: 20

COUNTY ROAD

Good

Over: TURTLE RIVER

1 WEST 1 NORTH ARVILLA, Grand Forks, ND

Built 1996 Load: 47.0 t ADT: 60

6th St SW

Good

Over: CREEK

5 WEST 2 NORTH OF HAZEN, Mercer, ND

Built 2014 Load: 47.0 t ADT: 24

IRRSR ND HIWAY 31

Good

Over: ANTELOPE CREEK

10 NORTH OF SD BORDER, Sioux, ND

Built 1964 Load: 47.0 t ADT: 160

ND HIGHWAY 1806

Good

Over: LITTLE HEART RIVER

10 SOUTH OF I-94, Morton, ND

Built 1990 Load: 47.1 t ADT: 1,700

COUNTY HIGHWAY

Good

Over: BIG COULEE

1 EAST 2 NORTH CANDO, Towner, ND

Built 2003 Load: 47.2 t ADT: 10

ND HIGHWAY 30

Good

Over: N ROCKFORD CANAL NR1-10

6 NORTH OF ND 15, Wells, ND

Built 1983 Load: 47.2 t ADT: 220

86th Ave SW

Good

Over: THIRTY MILE CREEK

6 NORTH 5 EAST OF MOTT, Hettinger, ND

Built 1940 Load: 47.3 t ADT: 50

COUNTY HIGHWAY

Good

Over: BEAVER CREEK

4 EAST OF SHARON, Steele, ND

Built 2002 Load: 47.3 t ADT: 300

US HIGHWAY 81

Good

Over: PARK RIVER

1 NORTH OF ND 17, Walsh, ND

Built 1971 Load: 47.3 t ADT: 3,270

ND HIGHWAY 41

Good

Over: MCCLUSKY CANAL R2-2

9 SOUTH OF ND 200, McLean, ND

Built 1973 Load: 47.4 t ADT: 440

ND HIGHWAY 1804

Good

Over: CREEK

5 SOUTHWEST TRENTON, Williams, ND

Built 1981 Load: 47.4 t ADT: 1,420

23RD ST. NE

Good

Over: CEDAR CREEK

9 NORTH OF LEMMON, Adams, ND

Built 1975 Load: 47.7 t ADT: 140

COUNTY HIGHWAY

Good

Over: TONGUE RIVER

4 NORTH OSNABROCK, Cavalier, ND

Built 1980 Load: 48.0 t ADT: 330

BELMONT STREET

Good

Over: GF SO. END DRAINWAY

52ND AVE S & BELMONT-GF, Grand Forks, ND

Built 1998 Load: 48.0 t ADT: 1,000

ND HIGHWAY 1806

Good

Over: CREEK

7 SOUTH OF I-94, Morton, ND

Built 1996 Load: 48.0 t ADT: 1,950

IRRSR ND HIWAY 24

Good

Over: BATTLE CREEK

9 NORTH OF FORT YATES, Sioux, ND

Built 1965 Load: 48.0 t ADT: 1,700

ND HIGHWAY 14

Good

Over: MOUSE RIVER

1 N.W. OF TOWNER, McHenry, ND

Built 2009 Load: 48.1 t ADT: 690

US HIGHWAY 2

Good

Over: CREEK

4 WEST OF US HWY 83, Ward, ND

Built 1980 Load: 48.2 t ADT: 8,190

COUNTY HIGHWAY

Good

Over: COUNTY DRAIN 14

1 EAST 4 SOUTH MAPLETON, Cass, ND

Built 2019 Load: 48.3 t ADT: 20

COUNTY HIGHWAY

Good

Over: COUNTY DRAIN 2

3 WEST OF HARWOOD, Cass, ND

Built 2021 Load: 48.3 t ADT: 58

SOUTH 48TH ST.

Good

Over: LEGAL DRAIN # 9

SOUTH 48TH ST., Grand Forks, ND

Built 2011 Load: 48.3 t ADT: 2,500

IRRSR ND HIGHWAY 6

Good

Over: CREEK

1 SOUTH OF BREIEN, Sioux, ND

Built 1949 Load: 48.3 t ADT: 250

47TH ST SW

Good

Over: BEAVER CREEK

2 W 10 S OF RICHARDTON, Stark, ND

Built 2018 Load: 48.3 t ADT: 20

COUNTY HIGHWAY

Good

Over: CREEK

1 W 10 S OF RICHARDTON, Stark, ND

Built 2018 Load: 48.3 t ADT: 10

US HIGHWAY 81

Good

Over: DRAINAGE DITCH

5 NORTH OF MANVEL, Grand Forks, ND

Built 1950 Load: 48.4 t ADT: 1,950

INTERSTATE 29

Good

Over: LEGAL DRAIN #64

SOUTH OF JOLIETTE INTER., Pembina, ND

Built 2023 Load: 48.6 t ADT: 3,295

COUNTY HIGHWAY

Good

Over: WILD RICE RIVER

4 NORTH HANKINSON, Richland, ND

Built 2012 Load: 48.6 t ADT: 20

COUNTY HIGHWAY

Good

Over: WILD RICE RIVER

4 WEST 2 SOUTH WAHPETON, Richland, ND

Built 2009 Load: 48.6 t ADT: 20

COUNTY HIGHWAY

Good

Over: CREEK

1 SOUTH 1 EAST OF SHARON, Steele, ND

Built 2020 Load: 48.6 t ADT: 45

COUNTY HIGHWAY

Good

Over: DES LACS REFUGE LAKE

CITY OF KENMARE, Ward, ND

Built 2016 Load: 48.6 t ADT: 320

ND HIGHWAY 30

Good

Over: PIPESTEM CREEK

NORTH US 52, Wells, ND

Built 2022 Load: 48.6 t ADT: 175

41ST ST NE

Good

Over: BURNT CREEK

2 EAST 8 NORTH BISMARCK, Burleigh, ND

Built 1979 Load: 48.8 t ADT: 35

COUNTY HIGHWAY

Good

Over: NORTH BRANCH GOOSE RIVER

2 EAST 1 NORTH HATTON, Traill, ND

Built 1999 Load: 48.8 t ADT: 20

US HIGHWAY 2

Good

Over: MOUSE RIVER

1 WEST OF N.D. HWY 14 S, McHenry, ND

Built 1979 Load: 48.9 t ADT: 1,275

US HIGHWAY 2

Good

Over: MOUSE RIVER

1 WEST OF N.D. HWY 14 S, McHenry, ND

Built 1979 Load: 48.9 t ADT: 1,275

COUNTY ROAD

Good

Over: CUT BANK CREEK

3 WEST 3 SOUTH MAXBASS, Bottineau, ND

Built 2020 Load: 49.0 t ADT: 25

COUNTY HIGHWAY 16

Good

Over: WILD RICE RIVER

1 EAST OF ST BENEDICT, Cass, ND

Built 2001 Load: 49.0 t ADT: 670

ND HIGHWAY 22

Good

Over: JIM CREEK

10 NORTH OF ND 200, Dunn, ND

Built 2011 Load: 49.0 t ADT: 2,175

SECTION LINE TRAIL

Good

Over: COULEE

1 EAST 1 SOUTH WEBSTER, Ramsey, ND

Built 2021 Load: 49.0 t ADT: 4

Showing 3,401-3,450 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.