Nd Highway 18 over Maple River
GoodCass County, North Dakota · 8 North of Leonard · Structure no. 0018064955
- Built
- 1985
- 40 years old, rebuilt 2002
- Condition
- Good
- inspected October 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 322 ft
- 5 main spans
- Daily traffic
- 700
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 18 over Maple River is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 18 over Maple River in Cass County, North Dakota. It was built in 1985 and reconstructed in 2002, so it is 40 years old, younger than the North Dakota average of 48.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 700 vehicles a day, roughly 13% of them trucks, projected to reach 719 by 2039. The structure is 322 ft (98 m) long and 38 ft wide. If it were closed, the detour would be 21.7 mi (35 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nd Highway 18 over Maple River built?
It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2002.
What condition is Nd Highway 18 over Maple River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Nd Highway 18 over Maple River carry?
About 700 vehicles per day (2019 count), of which roughly 13% are trucks.
How long is Nd Highway 18 over Maple River?
The structure is 322 ft (98 m) long with a longest span of 65 ft (19.8 m) and a deck 38 ft wide.
Who owns Nd Highway 18 over Maple River?
It is owned by the State Highway Agency.