North Dakota bridges
North Dakota reports 4,250 bridges and culverts across 53 counties. 470 (11.1%) are rated in poor condition, and 824 are posted with load limits or closed. The oldest structure still in the inventory dates from 1885.
Find a bridge in North Dakota
Type at least two characters, or pick a condition or type, to search every bridge in the state.
Counties
Circle size reflects the number of bridges- Adams County 44
- Barnes County 79
- Benson County 40
- Billings County 60
- Bottineau County 123
- Bowman County 69
- Burke County 29
- Burleigh County 113
- Cass County 369
- Cavalier County 65
- Dickey County 43
- Divide County 13
- Dunn County 73
- Eddy County 27
- Emmons County 68
- Foster County 19
- Golden Valley County 34
- Grand Forks County 337
- Grant County 59
- Griggs County 22
- Hettinger County 64
- Kidder County 10
- LaMoure County 60
- Logan County 13
- McHenry County 112
- McIntosh County 11
- McKenzie County 136
- McLean County 58
- Mercer County 71
- Morton County 269
- Mountrail County 28
- Nelson County 23
- Oliver County 23
- Pembina County 203
- Pierce County 5
- Ramsey County 48
- Ransom County 35
- Renville County 24
- Richland County 196
- Rolette County 18
- Sargent County 31
- Sheridan County 8
- Sioux County 22
- Slope County 43
- Stark County 156
- Steele County 93
- Stutsman County 78
- Towner County 57
- Traill County 147
- Walsh County 257
- Ward County 125
- Wells County 41
- Williams County 99
Condition
Good42%(1,782)
Fair47%(1,998)
Poor11%(470)
Counties with the highest share of poor bridges
- McHenry County30.4% of 112
- Cavalier County29.2% of 65
- Towner County24.6% of 57
- Pembina County23.2% of 203
- Williams County23.2% of 99
Structure types
| Structure type | Bridges | Share |
|---|---|---|
| Culvert | 1,293 | 30.4% |
| Stringer/Multi-beam or Girder | 1,203 | 28.3% |
| Box Beam or Girders - Single or Spread | 679 | 16.0% |
| Tee Beam | 353 | 8.3% |
| Channel Beam | 257 | 6.0% |
| Box Beam or Girders - Multiple | 204 | 4.8% |
| Truss - Thru | 141 | 3.3% |
| Slab | 106 | 2.5% |
| Girder and Floorbeam System | 8 | 0.2% |
| Arch - Deck | 2 | 0.0% |
| Frame | 2 | 0.0% |
| Arch - Thru | 1 | 0.0% |
| Segmental Box Girder | 1 | 0.0% |
When North Dakota's bridges were built
Busiest
- 45th Street Fargo over I-94/45th Street Intchg.FairCass County · 50,840 vehicles/day
- Ramp to I-94 EB over I-29 I-94FairCass County · 49,800 vehicles/day
- Interstate 94 over US 81FairCass County · 49,800 vehicles/day
- Interstate 94 over 5th ST SeparationFairCass County · 49,800 vehicles/day
- Interstate 94 over Interstate 29FairCass County · 48,335 vehicles/day
Longest
- Irrfb Nd Hiway 23 over Missouri RiverGoodMcKenzie County · 4,517 ft
- Nd Highway 66 over Red River of the NorthFairPembina County · 4,088 ft
- 12 Ave No Fargo over BnrrFairCass County · 2,682 ft
- Bismarck Expwy. over Missouri RiverFairBurleigh County · 2,510 ft
- I-94 Business Loop over Missouri RiverFairBurleigh County · 2,369 ft
Oldest
- County Highway over Goose RiverFairTraill County · Built 1885
- 108th Avenue SW over Tepee CreekFairHettinger County · Built 1900
- 98th Ave. SW over CreekFairStark County · Built 1900
- 133rd Ave SW over CreekFairBillings County · Built 1901
- 114th Ave SW over CreekFairStark County · Built 1901
Newest
- Interstate 29 over County Drain 11GoodGrand Forks County · Built 2024
- US Highway 2 over Lloyds CouleeGoodWard County · Built 2024
- 52nd Ave S over Sheyenne RiverGoodCass County · Built 2024
- US Highway 2 over CreekGoodWard County · Built 2024
- US HWY 85 over Spring CreekGoodMcKenzie County · Built 2024
Who owns North Dakota's bridges
| County | 2,926 | 68.8% |
| State | 1,158 | 27.2% |
| City | 102 | 2.4% |
| Federal | 52 | 1.2% |
| Local | 6 | 0.1% |
| Railroad | 6 | 0.1% |
More North Dakota facts
Total bridge length72 miles
Total deck area14,455,821 sq ft
Culverts counted as bridges1,293 (30%)
On the National Highway System654
Posted with load limits714
Closed to traffic110
Listed or eligible for the National Register120
Average daily traffic per bridge972 vehicles
Newest structure2024