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: ROCKY RUN CREEK

5 EAST OF CATHAY, Wells, ND

Built 2003 Load: 40.8 t ADT: 20

COUNTY HIGHWAY

Good

Over: PIPESTEM CREEK

6 EAST 1 NORTH SYKESTON, Wells, ND

Built 1995 Load: 40.8 t ADT: 10

ND HIGHWAY 1804

Good

Over: STONEY CREEK

3 EAST OF US 2, Williams, ND

Built 2017 Load: 40.8 t ADT: 1,800

COUNTY ROAD

Good

Over: BUFFALO CREEK

8 SOUTH 1 EAST OF REEDER, Adams, ND

Built 2012 Load: 41.1 t ADT: 45

COUNTY HIGHWAY

Good

Over: CREEK

4 EAST 9 SOUTH OF ALICE, Cass, ND

Built 2014 Load: 41.1 t ADT: 20

39th ST SW

Good

Over: NORWEGIAN CREEK

2 SOUTH 0.5 EAST BELFIELD, Stark, ND

Built 2016 Load: 41.1 t ADT: 24

43RD ST SW

Good

Over: SOUTH BRANCH HEART RIVER

4 EAST 7 SOUTH BELFIELD, Stark, ND

Built 2017 Load: 41.1 t ADT: 30

COUNTY HIGHWAY

Good

Over: CREEK

5 E 2 N SOUTH HEART, Stark, ND

Built 2014 Load: 41.1 t ADT: 30

COUNTY ROAD

Good

Over: COULEE

2 SOUTH OF LOGAN, Ward, ND

Built 1969 Load: 41.2 t ADT: 25

19TH AVE NW

Good

Over: CASS COUNTY DRAIN 21

19TH AVE NW - WEST FARGO, Cass, ND

Built 2000 Load: 41.3 t ADT: 500

ND HIGHWAY 18

Good

Over: BUFFALO CREEK

4 SOUTH OF I-94, Cass, ND

Built 2002 Load: 41.3 t ADT: 1,300

COUNTY HIGHWAY

Good

Over: SOUTH BRANCH PARK RIVER

2 WEST 4 SOUTH OSNABROCK, Cavalier, ND

Built 2002 Load: 41.3 t ADT: 24

ND HIGHWAY 46

Good

Over: SHEYENNE RIVER

6 WEST OF ND 32, Ransom, ND

Built 1960 Load: 41.3 t ADT: 560

12TH AVE NW-WF

Good

Over: SHEYENNE DIVERSION

CITY OF WEST FARGO, Cass, ND

Built 1991 Load: 41.4 t ADT: 2,000

US HIGHWAY 2

Good

Over: ENGLISH COULEE

1 EAST OF I-29, Grand Forks, ND

Built 1988 Load: 41.4 t ADT: 20,450

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

4 WEST 3 NORTH OF ALICE, Cass, ND

Built 2014 Load: 41.5 t ADT: 20

86th Ave. SW

Good

Over: SPRING CREEK

1 NORTH 1 WEST HALLIDAY, Dunn, ND

Built 2013 Load: 41.5 t ADT: 50

ND HIGHWAY 34

Good

Over: CREEK

4 EAST OF US 83, Emmons, ND

Built 2001 Load: 41.5 t ADT: 390

COUNTY HIGHWAY

Good

Over: LEGAL DRAIN NO. 12

7 EAST 2 NORTH GILBY, Grand Forks, ND

Built 2000 Load: 41.5 t ADT: 50

71ST ST SE

Good

Over: BEAVER CREEK

1 EAST OF BURNSTAD, Logan, ND

Built 2018 Load: 41.5 t ADT: 48

INTERSTATE 29

Good

Over: DRAINAGE DITCH

8 SOUTH OF ND 5, Pembina, ND

Built 2004 Load: 41.5 t ADT: 1,475

IRRSR ND HIGHWAY 6

Good

Over: CREEK

4 NORTH OF SELFRIDGE, Sioux, ND

Built 1948 Load: 41.6 t ADT: 250

ND HIGHWAY 21

Good

Over: CREEK

4 EAST OF JCT US 85, Slope, ND

Built 2021 Load: 41.6 t ADT: 440

86th St SW

Good

Over: BUFFALO CREEK

EAST OF BUFFALO SPRINGS, Bowman, ND

Built 1975 Load: 41.7 t ADT: 75

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

1 EAST 3 SOUTH TOWER CITY, Cass, ND

Built 2014 Load: 41.7 t ADT: 20

COUNTY HIGHWAY

Good

Over: MAPLE RIVER

5 NORTH 3 EAST TOWER CITY, Cass, ND

Built 2017 Load: 41.7 t ADT: 20

COUNTY HWY

Good

Over: MAPLE RIVER

4 EAST OF ELLENDALE, Dickey, ND

Built 2005 Load: 41.7 t ADT: 24

COUNTY HIGHWAY

Good

Over: CREEK

2.5 E OF GREAT BEND, Richland, ND

Built 2013 Load: 41.7 t ADT: 400

94TH AVE SW

Good

Over: CREEK

6 EAST 2 NORTH LEFOR, Stark, ND

Built 2021 Load: 41.7 t ADT: 70

COUNTY HIGHWAY

Good

Over: DES LACS RIVER

CITY OF CARPIO, Ward, ND

Built 2010 Load: 41.7 t ADT: 360

78TH STREET

Good

Over: TRIBUTARY CEDAR CREEK

8 NORTH 1 WEST SCRANTON, Bowman, ND

Built 2012 Load: 41.8 t ADT: 50

COUNTY HIGHWAY

Good

Over: BULLION CREEK

2 SOUTH 6 EAST GOLVA, Golden Valley, ND

Built 2014 Load: 41.8 t ADT: 5

IRRSR COUNTY HIWAY

Good

Over: CEDAR CREEK

26 SOUTH OF ELGIN, Grant, ND

Built 1973 Load: 41.8 t ADT: 95

COUNTY HIGHWAY

Good

Over: ELM RIVER

3 W OF BLANCHARD, Traill, ND

Built 2020 Load: 41.8 t ADT: 20

ND HIGHWAY 68

Good

Over: CHARBONNEAU CREEK

7 SOUTH OF US 85, McKenzie, ND

Built 1969 Load: 41.9 t ADT: 350

ND HIGHWAY 200

Good

Over: CP RAILWAY

1 WEST OF US 83, McLean, ND

Built 1971 Load: 41.9 t ADT: 1,450

INTERSTATE 29

Good

Over: ENGLISH COULEE DIVERSION

2 SOUTH OF US 81, Grand Forks, ND

Built 2003 Load: 42.0 t ADT: 7,600

COUNTY ROAD

Good

Over: CREEK

2 NORTH 2 WEST PILLSBURY, Barnes, ND

Built 1980 Load: 42.1 t ADT: 20

E River Road S

Good

Over: RAILROAD CREEK

EAST RIVER ROAD AT MEDORA, Billings, ND

Built 2002 Load: 42.1 t ADT: 260

COUNTY ROAD 22

Good

Over: LOWER BRANCH RUSH RIVER

3 EAST OF PROSPER, Cass, ND

Built 2023 Load: 42.1 t ADT: 59

INTERSTATE 29

Good

Over: DRAIN

_, Cass, ND

Built 2015 Load: 42.1 t ADT: 6,500

COUNTY HIGHWAY 6

Good

Over: MAPLE RIVER

3 EAST 1 NORTH OF MONANGO, Dickey, ND

Built 2023 Load: 42.1 t ADT: 50

COUNTY ROAD

Good

Over: JAMES RIVER

2 NORTH OF LAMOURE, LaMoure, ND

Built 1983 Load: 42.1 t ADT: 50

28th Avenue

Good

Over: SWEET BRIAR CREEK

6 WEST 1 SOUTH OF MANDAN, Morton, ND

Built 2012 Load: 42.1 t ADT: 20

ND HIGHWAY 18

Good

Over: DRAINAGE DITCH

3 SOUTH OF NECHE, Pembina, ND

Built 1985 Load: 42.1 t ADT: 550

COUNTY HIGHWAY

Good

Over: BOIS DE SIOUX RIVER

2 EAST 3 NORTH FAIRMONT, Richland, ND

Built 2003 Load: 42.1 t ADT: 50

COUNTY HIGHWAY

Good

Over: CANNONBALL CREEK

11 N 3 W OF MARMARTH, Slope, ND

Built 2012 Load: 42.1 t ADT: 100

COUNTY HIGHWAY

Good

Over: CREEK

1 NORTHEAST OF MARMARTH, Slope, ND

Built 2016 Load: 42.1 t ADT: 45

80TH AVE SW

Good

Over: CREEK

8 E 15 S OF RICHARDTON, Stark, ND

Built 2023 Load: 42.1 t ADT: 50

COUNTY HIGHWAY 8

Good

Over: MIDDLE BRANCH PARK RIVER

6 WEST 3 NORTH OF GRAFTON, Walsh, ND

Built 2023 Load: 42.1 t ADT: 95

Showing 3,251-3,300 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.