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

42ND ST SW-FARGO

Unknown

Over: I-94-42ND ST SEP

.5 WEST I-29-I-94 INT, Cass, ND

Built 2000 ADT: 28,300

INTERSTATE 94

Unknown

Over: INTERSTATE 29

I-94-I-29 INTCHNGE-FARGO, Cass, ND

Built 2003 ADT: 20,373

INTERSTATE 94

Unknown

Over: INTERSTATE 29

I-94-I-29 INTERCHNG FARGO, Cass, ND

Built 2003 ADT: 20,737

25TH STREET FARGO

Unknown

Over: I-94/25TH ST. INT.

1 EAST OF I-29, Cass, ND

Built 1990 ADT: 48,900

INTERSTATE 94

Unknown

Over: US 81

I-94-US 81 INTCHNGE-FARGO, Cass, ND

Built 1993 ADT: 34,900

INTERSTATE 94

Unknown

Over: 5TH ST SEPARATION

1 EAST OF US 81 - FARGO, Cass, ND

Built 1993 ADT: 5,000

12 AVE NO FARGO

Unknown

Over: BNRR

1 EAST I-29, Cass, ND

Built 1978 ADT: 100

ND HIGHWAY 16

Unknown

Over: I-94/BEACH INTERCHANGE

JUNCTION OF I-94 & ND 16, Golden Valley, ND

Built 1968 ADT: 2,850

COUNTY HIGHWAY

Unknown

Over: I-94/EAST BEACH SEP

3 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 2,850

INTERSTATE 94

Unknown

Over: CO. HWY/BOYS RANCH INT.

5 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

INTERSTATE 94

Unknown

Over: CO. HWY/BOYS RANCH INT.

5 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

COUNTY HIGHWAY

Unknown

Over: I-94/SENTINEL BUTTE INT

9 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 2,850

INTERSTATE 94

Unknown

Over: CO.HWY/CAMEL HUMP SEP.

11 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

INTERSTATE 94

Unknown

Over: CO.HWY/CAMEL HUMP SEP.

11 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

INTERSTATE 94

Unknown

Over: CO.HWY/BUFFALO GAP INT.

17 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

INTERSTATE 94

Unknown

Over: CO. HWY/BUFFALO GAP INT.

17 EAST OF JCT. ND 16, Golden Valley, ND

Built 1968 ADT: 1,425

COUNTY HIGHWAY

Unknown

Over: U.S. HIGHWAY 2

13 WEST OF I-29, Grand Forks, ND

Built 1975 ADT: 6,000

COUNTY HIGHWAY

Unknown

Over: I-29/NORTHWOOD SEP

3 SOUTH ND 15, Grand Forks, ND

Built 1970 ADT: 9,800

ND HIGHWAY 15

Unknown

Over: I-29/THOMPSON INTERCHANG

JUNCTION ND 15, Grand Forks, ND

Built 1967 ADT: 11,600

COUNTY HIGHWAY

Unknown

Over: I-29/WALLE SEPARATION

3 NORTH ND 15, Grand Forks, ND

Built 1967 ADT: 11,600

COUNTY HIGHWAY

Unknown

Over: I-29/MERRIFIELD SEP

5 NORTH ND 15, Grand Forks, ND

Built 1968 ADT: 11,600

US HIGHWAY 81

Unknown

Over: I29/32ND AVENUE INTERCHA

3 SOUTH US 2, Grand Forks, ND

Built 1967 ADT: 16,700

INTERSTATE 29

Unknown

Over: ND297/DEMERS AVE INT-GF

1 SOUTH US 2, Grand Forks, ND

Built 1968 ADT: 5,450

INTERSTATE 29

Unknown

Over: ND297/DEMERS AVE INT-GF

1 SOUTH US 2, Grand Forks, ND

Built 1968 ADT: 5,450

CITY STREET

Unknown

Over: UNIVERSITY AVE/I-29 SEP

1 SOUTH US 2, Grand Forks, ND

Built 1968 ADT: 16,400

INTERSTATE 29

Unknown

Over: US 2/I-29 INTERCHANGE

JUNCTION US 2-GF, Grand Forks, ND

Built 1968 ADT: 10,300

INTERSTATE 29

Unknown

Over: US 2/I-29 INTERCHANGE

JUNCTION US 2-GF, Grand Forks, ND

Built 1968 ADT: 10,300

INTERSTATE 29

Unknown

Over: NORTH GRAND FORKS INT

JUNCTION US 81- GF, Grand Forks, ND

Built 1968 ADT: 1,975

INTERSTATE 29

Unknown

Over: US81/N GRAND FORKS INT

JUNCTION US 81-GF, Grand Forks, ND

Built 1968 ADT: 1,975

US 81

Unknown

Over: I-29/MANVEL INTERCHANGE

JUNCTION US 81 MANVEL, Grand Forks, ND

Built 1971 ADT: 5,500

COUNTY HIGHWAY

Unknown

Over: I-29/JOHNSTOWN INT

4 NORTH OF MANVEL, Grand Forks, ND

Built 1972 ADT: 5,400

COLUMBIA ROAD

Unknown

Over: DEMERS AVE & BNRR

DEMERS AVE-BNRR-G. FORKS, Grand Forks, ND

Built 1984 ADT: 10,900

ND 297/DEMERS AVE

Unknown

Over: BNRR-CITY STREET

4TH AVE SOUTH-GRAND FORKS, Grand Forks, ND

Built 1972 ADT: 10

COUNTY HIGHWAY

Unknown

Over: I94/LONG LAKE INTER

6 WEST OF ND 3 NORTH, Kidder, ND

Built 1966 ADT: 5,700

COUNTY HIGHWAY

Unknown

Over: I94/WEBER LAKE SEP

4 WEST OF ND 3 NORTH, Kidder, ND

Built 1966 ADT: 5,700

ND HIGHWAY 3

Unknown

Over: I-94/STEELE INTERCHANGE

ND 3 & STEELE INTERCHANGE, Kidder, ND

Built 1966 ADT: 6,700

COUNTY HIGHWAY

Unknown

Over: I94/ROBINSON INTERCHANGE

4 EAST OF ND 3 NORTH, Kidder, ND

Built 1966 ADT: 6,700

ND HIGHWAY 3 SOUTH

Unknown

Over: I-94/DAWSON INTERCHANGE

JCT. ND 3 SOUTH, Kidder, ND

Built 1966 ADT: 6,700

COUNTY HIGHWAY

Unknown

Over: I 94-TAPPEN INTERCHANGE

5 EAST OF ND 3 SOUTH, Kidder, ND

Built 1958 ADT: 6,300

COUNTY HIGHWAY

Unknown

Over: I 94/PETTIBONE INTERCHG

8 EAST OF ND 3 SOUTH, Kidder, ND

Built 1958 ADT: 6,300

COUNTY HIGHWAY

Unknown

Over: I 94-CRYSTAL SPRINGS INT

7 WEST OF ND 30, Kidder, ND

Built 1958 ADT: 6,300

COUNTY HIGHWAY

Unknown

Over: I-94/HEBRON INTERCHANGE

12 EAST OF ND 8, Morton, ND

Built 1961 ADT: 4,400

COUNTY HIGHWAY

Unknown

Over: I-94/CUSTER TOWNSHIP SEP

10 WEST OF ND 49, Morton, ND

Built 1961 ADT: 4,400

INTERSTATE 94

Unknown

Over: CO HWY RR/EAGLE NEST INT

7 WEST OF ND 49, Morton, ND

Built 2023 ADT: 1,070

INTERSTATE 94

Unknown

Over: CO HWY RR/EAGLE NEST INT

7 WEST OF ND 49, Morton, ND

Built 1962 ADT: 2,250

COUNTY HIGHWAY

Unknown

Over: I-94/CLASSEN TWNSHP SEP

5 WEST OF ND 49, Morton, ND

Built 1961 ADT: 4,500

COUNTY HIGHWAY

Unknown

Over: I-94/GLEN ULLIN INT

2 WEST OF ND 49, Morton, ND

Built 1961 ADT: 4,600

ND HIGHWAY

Unknown

Over: I-94/ND 49 INTERCHANGE

JUNCTION OF ND 49 & I-94, Morton, ND

Built 1961 ADT: 5,300

COUNTY HIGHWAY

Unknown

Over: I-94/GECK TOWNSHIP INT

3 EAST OF ND 49, Morton, ND

Built 1961 ADT: 5,400

COUNTY HIGHWAY

Unknown

Over: I-94/DENGATE INTERCHANGE

7 EAST OF ND 49, Morton, ND

Built 1960 ADT: 5,400

Showing 101-150 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.