Nd Highway 6 over Heart River
GoodMorton County, North Dakota · 1 South of Mandan · Structure no. 0006066735
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 316 ft
- 3 main spans
- Daily traffic
- 3,550
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Nd Highway 6 over Heart River is a steel continuous stringer/multi-beam or girder carrying Nd Highway 6 over Heart River in Morton County, North Dakota. It was built in 1984, so it is 41 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 3,550 vehicles a day, roughly 6% of them trucks, projected to reach 3,382 by 2039. The structure is 316 ft (96.3 m) long and 55 ft wide. If it were closed, the detour would be 31.7 mi (51 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 6 over Heart River built?
It was built in 1984, making it 41 years old in 2025.
What condition is Nd Highway 6 over Heart 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 July 2023.
How much traffic does Nd Highway 6 over Heart River carry?
About 3,550 vehicles per day (2019 count), of which roughly 6% are trucks.
How long is Nd Highway 6 over Heart River?
The structure is 316 ft (96.3 m) long with a longest span of 133 ft (40.5 m) and a deck 55 ft wide.
Who owns Nd Highway 6 over Heart River?
It is owned by the State Highway Agency.