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

Unknown

Over: I-94/BLUEGRASS INT

7 WEST OF ND 31, Morton, ND

Built 1960 ADT: 5,500

COUNTY HIGHWAY

Unknown

Over: I-94/ALMONT INTERCHANGE

5 WEST OF ND 31, Morton, ND

Built 1960 ADT: 5,700

ND HIGHWAY

Unknown

Over: I-94/ND 31 INTERCHANGE

JUNCTION OF ND 31 & I-94, Morton, ND

Built 1964 ADT: 5,500

INTERSTATE 94

Unknown

Over: CO HWY/ROSEBUD SEPARATIO

4 EAST OF ND 31, Morton, ND

Built 1964 ADT: 3,000

INTERSTATE 94

Unknown

Over: ROSEBUD SEPARATION

4 EAST OF ND 31, Morton, ND

Built 1964 ADT: 3,000

COUNTY HIGHWAY

Unknown

Over: I-94/JUDSON INTERCHANGE

6 EAST OF ND 31, Morton, ND

Built 1964 ADT: 6,600

COUNTY HIGHWAY

Unknown

Over: I-94/SWEET BRIAR SEP

8 EAST OF ND 31, Morton, ND

Built 1964 ADT: 6,600

COUNTY HIGHWAY

Unknown

Over: I-94/SWEET BRIAR INT

7 WEST OF ND 25, Morton, ND

Built 1964 ADT: 6,800

ND HIGHWAY

Unknown

Over: I-94/ND 94 & ND 25 INT

JCT OF I-94 & ND 94 & 25, Morton, ND

Built 1964 ADT: 7,700

INTERSTATE 94

Unknown

Over: SUNSET DR/NW MANDAN INT.

5 EAST OF ND 25, Morton, ND

Built 1964 ADT: 6,000

INTERSTATE 94

Unknown

Over: SUNSET DR/NW MANDAN INT.

5 EAST OF ND 25, Morton, ND

Built 1964 ADT: 6,000

INTERSTATE 94

Unknown

Over: COLLINS AVENUE

6 EAST OF ND 25, Morton, ND

Built 1964 ADT: 6,350

INTERSTATE 94

Unknown

Over: COLLINS AVENUE

6 EAST OF ND 25, Morton, ND

Built 1964 ADT: 6,350

INTERSTATE 94

Unknown

Over: REFINERY ROAD INTERCHANG

5 WEST OF US 83 NORTH, Morton, ND

Built 1964 ADT: 7,750

INTERSTATE 94

Unknown

Over: REFINERY ROAD INTERCHANG

5 WEST OF US 83 NORTH, Morton, ND

Built 1964 ADT: 7,750

INTERSTATE 94

Unknown

Over: BNRR AND MISSOURI ROAD

5 WEST OF US 83 NORTH, Morton, ND

Built 1964 ADT: 7,750

INTERSTATE 94

Unknown

Over: BNRR AND MISSOURI ROAD

5 WEST OF US 83 NORTH, Morton, ND

Built 1964 ADT: 7,750

I-94 BUSINESS LOOP

Unknown

Over: WEST MIDWAY SEPARATION

4 WEST OF US 83 NORTH, Morton, ND

Built 1965 ADT: 16,750

INTERSTATE 94

Unknown

Over: EAST MIDWAY INTERCHANGE

3 WEST OF US 83 NORTH, Morton, ND

Built 1965 ADT: 11,100

INTERSTATE 194

Unknown

Over: BUSINESS LOOP 94

2 EAST OF MANDAN, Morton, ND

Built 1981 ADT: 12,900

INTERSTATE 194

Unknown

Over: BUSINESS 94

1 SOUTHEAST JUNCT 194, Morton, ND

Built 1981 ADT: 1,400

INTERSTATE 194

Unknown

Over: BUSINESS 94

1 SOUTHEAST OF JUNCT 194, Morton, ND

Built 1981 ADT: 1,400

BISMARCK EXPWY

Unknown

Over: MCKENZIE DRIVE

MCKENZIE DRIVE INT., Morton, ND

Built 1984 ADT: 300

BISMARCK EXPWY

Unknown

Over: MCKENZIE DRIVE

MCKENZIE DRIVE INT., Morton, ND

Built 1984 ADT: 300

ND HIGHWAY 66

Unknown

Over: I-29/DRAYTON INTERCHANGE

JUNCTION ND 66, Pembina, ND

Built 1959 ADT: 2,950

COUNTY HIGHWAY

Unknown

Over: I-29/PITTSBURG INT

4 NORTH OF ND 66, Pembina, ND

Built 1959 ADT: 2,900

COUNTY HIGHWAY

Unknown

Over: I-29/LINCOLN INTERCHANGE

6 NORTH OF ND 66, Pembina, ND

Built 1959 ADT: 2,900

COUNTY HIGHWAY

Unknown

Over: I-29/BOWESMONT INT

7 SOUTH OF ND 5, Pembina, ND

Built 1959 ADT: 2,850

COUNTY HIGHWAY

Unknown

Over: I-29/NORTH BOWESMONT SEP

5 SOUTH OF ND 5, Pembina, ND

Built 1959 ADT: 2,850

COUNTY HIGHWAY

Unknown

Over: I-29/CARLISLE INT

3 SOUTH OF ND 5, Pembina, ND

Built 1959 ADT: 2,850

US 81 & ND 5

Unknown

Over: I-29/JOLIETTE INT

JCT US 81 AND ND 5, Pembina, ND

Built 1959 ADT: 2,800

COUNTY HIGHWAY

Unknown

Over: I-29/BATHGATE SEPARATION

3 NORTH OF ND 5, Pembina, ND

Built 1959 ADT: 2,800

COUNTY HIGHWAY

Unknown

Over: I-29/BATHGATE INT

5 NORTH OF ND 5, Pembina, ND

Built 1959 ADT: 2,850

COUNTY HIGHWAY

Unknown

Over: I29/NECHE INTERCHANGE

3 SOUTH OF ND 59, Pembina, ND

Built 1959 ADT: 2,900

ND HIGHWAY 59

Unknown

Over: I-29/PEMBINA INTERCHANGE

JCT ND HIGHWAY 59, Pembina, ND

Built 1959 ADT: 1,330

ND HIGHWAY 13

Unknown

Over: WAHPETON BYPASS

1 WEST OF WAHPETON, Richland, ND

Built 1975 ADT: 2,965

ND HIGHWAY 13

Unknown

Over: ND HIGHWAY 210 BYPASS

1 WEST OF WAHPETON, Richland, ND

Built 1975 ADT: 2,965

COUNTY HIGHWAY

Unknown

Over: I-29/STATE LINE INT

SOUTH DAKOTA BORDER, Richland, ND

Built 1974 ADT: 3,950

COUNTY HIGHWAY

Unknown

Over: I-29/LAMARS INTERCHANGE

2 NORTH OF SD BORDER, Richland, ND

Built 1974 ADT: 4,050

COUNTY HIGHWAY

Unknown

Over: I-29/PARK LAKE SEP

4 SOUTH OF ND 11, Richland, ND

Built 1974 ADT: 4,050

ND HIGHWAY 11

Unknown

Over: I-29/ND HWY 11 INTERCHNG

JUNCTION OF HWY 11, Richland, ND

Built 1974 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-29/HANKINSON SEP

2 NORTH OF ND 11, Richland, ND

Built 1974 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-29/GREAT BEND SEP

5 NORTH OF ND 11, Richland, ND

Built 1974 ADT: 4,550

COUNTY HIGHWAY

Unknown

Over: I-29/GREAT BEND INT

8 SOUTH OF ND 13, Richland, ND

Built 1974 ADT: 4,650

COUNTY HIGHWAY

Unknown

Over: I-29/MANTADOR SEP

6 SOUTH OF ND 13, Richland, ND

Built 1974 ADT: 4,650

COUNTY HIGHWAY

Unknown

Over: I-29/MOSELLE SEPARATION

3 SOUTH OF ND 13, Richland, ND

Built 1974 ADT: 4,650

ND HIGHWAY 13

Unknown

Over: I-29/MOORETON INT

JUNCTION OF ND 13, Richland, ND

Built 1973 ADT: 4,650

ND HIGHWAY 13

Unknown

Over: I-29/MOORETON INT

JUNCTION OF ND 13, Richland, ND

Built 1973 ADT: 5,100

COUNTY HIGHWAY

Unknown

Over: I-29/DWIGHT INTERCHANGE

4 NORTH OF ND 13, Richland, ND

Built 1973 ADT: 5,100

COUNTY HIGHWAY

Unknown

Over: I-29/ANTELOPE SEPARATION

6 NORTH OF ND 13, Richland, ND

Built 1973 ADT: 5,100

Showing 151-200 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.