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

ACCESS RD AND BNSF

Unknown

Over: 2ND ST NORTH OF MAIN

2ND ST N OF MAIN-FARGO, Cass, ND

Built 1970 ADT: 4,000

US 10/MAIN AVENUE

Unknown

Over: US 81/10TH STREET

MAIN AVE & 10TH ST-FARGO, Cass, ND

Built 1938 ADT: 31,300

COUNTY HIGHWAY

Unknown

Over: I-29/HICKSON INTERCHANGE

2 NORTH OF ND 46, Cass, ND

Built 2022 ADT: 4,996

COUNTY HIGHWAY

Unknown

Over: I-29/ST BENEDICT INT

6 NORTH OF ND 46, Cass, ND

Built 1972 ADT: 8,500

COUNTY HIGHWAY

Unknown

Over: I-29/HORACE INTERCHANGE

7 SOUTH OF I-94, Cass, ND

Built 1972 ADT: 9,400

64TH AVE SOUTH

Unknown

Over: I-29/64TH AVE S SEP

4 SOUTH OF I-94, Cass, ND

Built 2022 ADT: 7,221

US HIGHWAY 81

Unknown

Over: I-29/52ND AVE.STH INT.

3 SOUTH OF I-94, Cass, ND

Built 2008 ADT: 9,400

US HIGHWAY 81

Unknown

Over: I-29/52ND AVE.SOUTH INT.

3 SOUTH OH I-94, Cass, ND

Built 2008 ADT: 12,300

INTERSTATE 29

Unknown

Over: 40TH AVE SW SEP - FARGO

2 SOUTH OF I-94 INT, Cass, ND

Built 2000 ADT: 6,950

INTERSTATE 29

Unknown

Over: 40TH AVE SW SEP. - FARGO

2 SOUTH OF I-94 INT, Cass, ND

Built 1999 ADT: 6,950

32ND AVE S FARGO

Unknown

Over: I-29/32ND AVE INT

1 SOUTH OF I 94, Cass, ND

Built 1973 ADT: 13,900

RAMP TO I-94 EB

Unknown

Over: I-29, I-94

I-29 & I-94 INTCHG-FARGO, Cass, ND

Built 1993 ADT: 5,000

INTERSTATE 29

Unknown

Over: 17TH AVE SO. SEPARATION

.5 NORTH OF I-94 - FARGO, Cass, ND

Built 2002 ADT: 21,845

INTERSTATE 29

Unknown

Over: 17TH AVE SO. SEPARATION

.5 NORTH OF I-94 - FARGO, Cass, ND

Built 2001 ADT: 21,845

INTERSTATE 29

Unknown

Over: TEXAS TURN

.9 NORTH OF I-94 - FARGO, Cass, ND

Built 2002 ADT: 21,065

INTERSTATE 29

Unknown

Over: TEXAS TURN

.9 NORTH OF I-94 - FARGO, Cass, ND

Built 2001 ADT: 21,065

INTERSTATE 29

Unknown

Over: 13TH AVE S INTERCHANGE

1 NORTH OF I-94 - FARGO, Cass, ND

Built 2002 ADT: 21,065

INTERSTATE 29

Unknown

Over: 13TH AVE S INTERCHANGE

1 NORTH OF I-94 - FARGO, Cass, ND

Built 2001 ADT: 21,065

INTERSTATE 29

Unknown

Over: 9TH AVE SOUTH SEPARATION

1.4 NORTH OF I-94 - FARGO, Cass, ND

Built 2002 ADT: 21,065

INTERSTATE 29

Unknown

Over: 9TH AVE SOUTH SEPARATION

1.4 NORTH OF I-94 - FARGO, Cass, ND

Built 2001 ADT: 21,065

US HIGHWAY 10

Unknown

Over: US 10 & I-29 INTERCHANGE

FARGO, Cass, ND

Built 2004 ADT: 38,855

US HIGHWAY 10

Unknown

Over: US 10 & I-29 INTERCHANGE

FARGO, Cass, ND

Built 2004 ADT: 38,855

7TH AVE. NORTH

Unknown

Over: I-29/7TH AVE N SEP

1 NORTH OF US 10, Cass, ND

Built 1966 ADT: 35,900

ND 294-12TH AVE N

Unknown

Over: I-29 INTERCHANGE

JCT I-29-12TH AVE N FARGO, Cass, ND

Built 1965 ADT: 21,600

CITY ST.19TH AVE.

Unknown

Over: I-29

2 NORTH OF US 10, Cass, ND

Built 2006 ADT: 21,600

CASS COUNTY 20

Unknown

Over: I-29/NORTH FARGO INT

3 SOUTH OF HARWOOD, Cass, ND

Built 1966 ADT: 10,200

CASS COUNTY NO 22

Unknown

Over: I-29/HARWOOD INT

7 NORTH OF US 10, Cass, ND

Built 1970 ADT: 9,700

COUNTY HIGHWAY

Unknown

Over: I-29/AMENIA SEPARATION

2 NORTH HARWOOD INTERCHG, Cass, ND

Built 1970 ADT: 9,700

COUNTY HIGHWAY

Unknown

Over: I-29/ARGUSVILLE INTERCHG

ARGUSVILLE CITY LIMITS, Cass, ND

Built 1970 ADT: 9,000

21ST ST SE

Unknown

Over: I-29/ARTHUR SEPARATION

4 NORTH OF ARGUSVILLE, Cass, ND

Built 1970 ADT: 9,000

COUNTY HIGHWAY

Unknown

Over: I-29/GARDNER INTERCHANGE

GARDNER CITY LIMITS, Cass, ND

Built 1970 ADT: 8,600

COUNTY HIGHWAY

Unknown

Over: I-29/HUNTER SEPARATION

11 SOUTH OF ND 200, Cass, ND

Built 1970 ADT: 8,600

COUNTY HIGHWAY

Unknown

Over: I-94/HILL INTERCHANGE

4 WEST OF ND 38, Cass, ND

Built 1959 ADT: 8,400

COUNTY HIGHWAY

Unknown

Over: I-94/MAPLE RIVER SEP

2 WEST OF ND 38, Cass, ND

Built 1960 ADT: 8,400

ND HIGHWAY 38

Unknown

Over: I-94/BUFFALO-ALICE INT

JCT. ND 38, Cass, ND

Built 1960 ADT: 9,200

COUNTY HIGHWAY

Unknown

Over: I-94/AYR INTERCHANGE

3 EAST OF ND 38, Cass, ND

Built 1960 ADT: 9,200

COUNTY HIGHWAY

Unknown

Over: I-94/EMBDEN INTERCHANGE

6 EAST OF ND 38, Cass, ND

Built 2006 ADT: 4,875

COUNTY HIGHWAY

Unknown

Over: I-94/ABSARAKA INT

8 WEST OF ND 18, Cass, ND

Built 2008 ADT: 9,300

COUNTY HIGHWAY

Unknown

Over: I94 WHEATLAND INTERCHG

6 WEST OF N.D.18, Cass, ND

Built 2005 ADT: 4,250

COUNTY HIGHWAY

Unknown

Over: I-94/LYNCHBURG INT

3 WEST OF ND 18, Cass, ND

Built 1960 ADT: 9,500

ND HIGHWAY 18

Unknown

Over: I-94/CASSELTON INT

JUNCTION OF ND 18, Cass, ND

Built 1960 ADT: 11,700

COUNTY HIGHWAY

Unknown

Over: I-94/DURBIN SEPARATION

3 M EAST OF 18, Cass, ND

Built 1959 ADT: 11,700

COUNTY HIGHWAY

Unknown

Over: I-94/MAPLETON INTERCHNGE

8 EAST OF ND 18, Cass, ND

Built 2003 ADT: 12,170

COUNTY HIGHWAY

Unknown

Over: I-94/KINDRED INTERCHANGE

10 EAST OF ND 18, Cass, ND

Built 2002 ADT: 11,875

ND HWY 10

Unknown

Over: I-94/RAYMOND INTERCHANGE

7 WEST OF I-29, Cass, ND

Built 2003 ADT: 13,705

US HIGHWAY 10

Unknown

Over: I-94/W.FARGO INT.

5 WEST OF I-29, Cass, ND

Built 1960 ADT: 10,500

INTERSTATE 94

Unknown

Over: HORACE ROAD INTERCHANGE

3 WEST OF I-29, Cass, ND

Built 2018 ADT: 5,250

INTERSTATE 94

Unknown

Over: HORACE ROAD INTERCHANGE

3 WEST OF I-29, Cass, ND

Built 2019 ADT: 2,625

9TH ST.WEST FARGO

Unknown

Over: I-94/9TH ST.INTERCHANGE

2 WEST OF I-29, Cass, ND

Built 2009 ADT: 28,300

45TH STREET FARGO

Unknown

Over: I-94/45TH STREET INTCHG.

45 TH ST AND I-94 - FARGO, Cass, ND

Built 1991 ADT: 676,300

Showing 51-100 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.