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

10th Ave NW

Structurally Deficient

Over: DUCK CREEK

5 NORTH 1 EAST OF BUCYRUS, Adams, ND

Built 1935 Load: 3.3 t ADT: 10

PARK ROAD

Structurally Deficient

Over: JAMESTOWN RESERVOIR

RESERVOIR ISLAND, Stutsman, ND

Built 1901 Load: 3.3 t ADT: 135

COUNTY HIGHWAY

Structurally Deficient

Over: SAND CREEK

WEST WILLISTON, Williams, ND

Built 1939 Load: 3.3 t ADT: 25

PARK ROAD

Structurally Deficient

Over: TURTLE RIVER

TURTLE RIVER STATE PARK, Grand Forks, ND

Built 1910 Load: 3.4 t ADT: 5

COUNTY ROAD

Structurally Deficient

Over: MIDDLE BRANCH PARK RIVER

8 NORTH OF PARK RIVER, Walsh, ND

Built 1918 Load: 3.4 t ADT: 20

94th Avenue SW

Structurally Deficient

Over: THIRTY MILE CREEK

12 NORTH 3 WEST OF MOTT, Hettinger, ND

Built 1941 Load: 3.5 t ADT: 15

COUNTY HIGHWAY

Structurally Deficient

Over: WILD RICE RIVER

2 WEST 1 SOUTH GREAT BEND, Richland, ND

Built 1920 Load: 3.8 t ADT: 20

22ND AVE

Structurally Deficient

Over: SE BR LITTLE HEART RIVER

2 S 1 E OF ST ANTHONY, Morton, ND

Built 1919 Load: 3.9 t ADT: 24

COUNTY ROAD

Structurally Deficient

Over: MIDDLE BRANCH PARK RIVER

3 EAST 8 NORTH PARK RIVER, Walsh, ND

Built 1921 Load: 4.3 t ADT: 26

COUNTY HIGHWAY

Structurally Deficient

Over: WILLOW CREEK

3 EAST 3 SOUTH ST THOMAS, Pembina, ND

Built 1968 Load: 4.4 t ADT: 24

IRR BIA RTE 22

Structurally Deficient

Over: TRIB TO RED BUTTE BAY

SE LAKE SAKAKAWEA, Mercer, ND

Built 1960 Load: 4.5 t ADT: 200

COUNTY ROAD

Structurally Deficient

Over: PARK RIVER

3 EAST 6 NORTH OF ADAMS, Walsh, ND

Built 1928 Load: 4.5 t ADT: 24

COUNTY ROAD

Structurally Deficient

Over: CART CREEK

5 EAST 3 NORTH GARDAR, Pembina, ND

Built 1977 Load: 4.6 t ADT: 27

COUNTY ROAD

Structurally Deficient

Over: TONGUE RIVER

BATHGATE, Pembina, ND

Built 1917 Load: 4.6 t ADT: 2

COUNTY HIGHWAY

Structurally Deficient

Over: SHEYENNE RIVER

11 WEST OF WALCOTT, Richland, ND

Built 1917 Load: 4.8 t ADT: 20

COUNTY ROAD

Structurally Deficient

Over: PARK RIVER

6 EAST 2 NORTH PARK RIVER, Walsh, ND

Built 1909 Load: 4.8 t ADT: 30

45TH AVENUE SW

Structurally Deficient

Over: CREEK

9 EAST 1 NORTH OF CARSON, Grant, ND

Built 1942 Load: 4.9 t ADT: 10

COUNTY HIGHWAY

Structurally Deficient

Over: LITTLE SO. PEMBINA RIVER

2 SOUTH OF MT. CARMEL, Cavalier, ND

Built 1954 Load: 5.1 t ADT: 10

COUNTY HIGHWAY

Structurally Deficient

Over: PARK RIVER

1 WEST 6 SOUTH EDINBURG, Walsh, ND

Built 1918 Load: 5.2 t ADT: 10

COUNTY ROAD

Structurally Deficient

Over: CREEK

2 EAST 13 SOUTH GRAFTON, Walsh, ND

Built 1969 Load: 5.2 t ADT: 24

COUNTY ROAD

Structurally Deficient

Over: CREEK

1 SOUTH OF GRAFTON, Walsh, ND

Built 1926 Load: 5.3 t ADT: 20

COUNTY ROAD

Structurally Deficient

Over: FOREST RIVER

SOUTHWEST CORNER MINTO, Walsh, ND

Built 1915 Load: 5.4 t ADT: 26

COUNTY HIGHWAY

Structurally Deficient

Over: TONGUE RIVER

2 WEST 1 SOUTH OF OLGA, Cavalier, ND

Built 1938 Load: 5.7 t ADT: 10

52nd Avenue

Structurally Deficient

Over: HEART RIVER

10 NORTH 2 EAST OF CARSON, Grant, ND

Built 1927 Load: 5.8 t ADT: 10

SOUTH PARK STREET

Structurally Deficient

Over: BRANCH OF KNIFE RIVER

CITY OF HEBRON, Morton, ND

Built 1916 Load: 5.8 t ADT: 200

32nd St. SW

Structurally Deficient

Over: CREEK

3 EAST 6 NORTH GLADSTONE, Stark, ND

Built 1930 Load: 5.8 t ADT: 5

COUNTY HIGHWAY

Structurally Deficient

Over: SHEYENNE RIVER

1 E 8 N OF COOPERSTOWN, Griggs, ND

Built 1912 Load: 5.9 t ADT: 24

COUNTY HIGHWAY

Structurally Deficient

Over: WILD RICE RIVER

3 NORTH 1 EAST DWIGHT, Richland, ND

Built 1922 Load: 5.9 t ADT: 20

COUNTY ROAD

Structurally Deficient

Over: PARK RIVER

3 EAST 1 NORTH PARK RIVER, Walsh, ND

Built 1916 Load: 5.9 t ADT: 10

COUNTY ROAD

Structurally Deficient

Over: NORTH BRANCH PARK RIVER

4 WEST 2 NORTH OF GRAFTON, Walsh, ND

Built 1930 Load: 5.9 t ADT: 10

COUNTY HIGHWAY

Structurally Deficient

Over: JAMES RIVER

1 SOUTHWEST OF ADRIAN, LaMoure, ND

Built 1908 Load: 6.0 t ADT: 18

COUNTY ROAD

Structurally Deficient

Over: ANTLER CREEK

2 NORTH OF ANTLER, Bottineau, ND

Built 1934 Load: 6.2 t ADT: 25

83rd St SW

Structurally Deficient

Over: CREEK

10 SOUTH 6 EAST OF MOTT, Hettinger, ND

Built 1942 Load: 6.2 t ADT: 10

COUNTY TRAIL

Structurally Deficient

Over: CREEK

4 WEST 4 SOUTH OF VANG, Cavalier, ND

Built 1955 Load: 6.3 t ADT: 2

COUNTY HIGHWAY

Structurally Deficient

Over: WILD RICE RIVER

4 WEST 1 SOUTH WAHPETON, Richland, ND

Built 1914 Load: 6.3 t ADT: 20

COUNTY ROAD

Structurally Deficient

Over: PARK RIVER

3 WEST 4 NORTH OF GRAFTON, Walsh, ND

Built 1915 Load: 6.6 t ADT: 10

CITY STREET

Structurally Deficient

Over: CREEK

NORTHEAST CORNER ADAMS, Walsh, ND

Built 1913 Load: 7.0 t ADT: 5

COUNTY TRAIL

Structurally Deficient

Over: PARK RIVER

1 EAST 7 NORTH OF LANKIN, Walsh, ND

Built 1914 Load: 7.0 t ADT: 5

COUNTY ROAD

Structurally Deficient

Over: BOUNDARY CREEK

7 NORTH 3 WEST OF KRAMER, Bottineau, ND

Built 1952 Load: 7.2 t ADT: 25

COUNTY ROAD

Structurally Deficient

Over: CANNONBALL RIVER

2 N. 4 W. OF REGENT, Hettinger, ND

Built 1944 Load: 7.2 t ADT: 26

COUNTY ROAD

Structurally Deficient

Over: MOUSE RIVER

1 EAST 8 NORTH KARLSRUHE, McHenry, ND

Built 1906 Load: 7.2 t ADT: 25

58th St.

Structurally Deficient

Over: SE BR LITTLE HEART RIVER

3 SOUTH 1 EAST ST ANTHONY, Morton, ND

Built 1971 Load: 7.2 t ADT: 5

COUNTY ROAD

Structurally Deficient

Over: CREEK

1 NORTH 1 EAST OF HOOPLE, Pembina, ND

Built 1955 Load: 7.2 t ADT: 5

COUNTY HIGHWAY

Structurally Deficient

Over: CREEK

1 NORTH 6 EAST THOMPSON, Grand Forks, ND

Built 1910 Load: 7.5 t ADT: 70

COUNTY ROAD

Structurally Deficient

Over: MOUSE RIVER

1 NORTH OF VERENDRYE, McHenry, ND

Built 1909 Load: 7.8 t ADT: 25

COUNTY ROAD

Structurally Deficient

Over: PARK RIVER

4 EAST 1 NORTH PARK RIVER, Walsh, ND

Built 1930 Load: 7.9 t ADT: 24

COUNTY HIGHWAY

Structurally Deficient

Over: SOUTH MARIAS RIVER

2 EAST 1 SOUTH MANVEL, Grand Forks, ND

Built 1926 Load: 8.1 t ADT: 24

COUNTY ROAD

Structurally Deficient

Over: FOREST RIVER

1 WEST 13 SOUTH GRAFTON, Walsh, ND

Built 1925 Load: 8.1 t ADT: 19

COUNTY HIGHWAY

Structurally Deficient

Over: SHEYENNE RIVER

4 SOUTH 2 WEST TOLNA, Nelson, ND

Built 1920 Load: 8.3 t ADT: 20

COUNTY ROAD

Structurally Deficient

Over: DRAIN DITCH

8 NORTH OF GRAFTON, Walsh, ND

Built 1968 Load: 8.4 t ADT: 24

Showing 4,101-4,150 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.