Irrsr Nd Hway 1806 over Cannonball River
PoorMorton County, North Dakota · 3 North of Nd 24 · Structure no. 1806034280
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 393 ft
- 6 main spans
- Daily traffic
- 1,450
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Irrsr Nd Hway 1806 over Cannonball River is a prestressed concrete box beam or girders - multiple carrying Irrsr Nd Hway 1806 over Cannonball River in Morton County, North Dakota. It was built in 1962, so it is 63 years old, older than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,450 vehicles a day, roughly 8% of them trucks, projected to reach 1,551 by 2039. The structure is 393 ft (119.8 m) long and 30 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irrsr Nd Hway 1806 over Cannonball River built?
It was built in 1962, making it 63 years old in 2025.
What condition is Irrsr Nd Hway 1806 over Cannonball River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.
How much traffic does Irrsr Nd Hway 1806 over Cannonball River carry?
About 1,450 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is Irrsr Nd Hway 1806 over Cannonball River?
The structure is 393 ft (119.8 m) long with a longest span of 63 ft (19.2 m) and a deck 30 ft wide.
Who owns Irrsr Nd Hway 1806 over Cannonball River?
It is owned by the State Highway Agency.