SD1806EF over Diversion Channel
GoodStanley County, South Dakota · 2.0 N Fort Pierre · Structure no. 000000059388260
- Built
- 1998
- 27 years old
- Condition
- Good
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 50
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SD1806EF over Diversion Channel is a concrete continuous culvert carrying SD1806EF over Diversion Channel in Stanley County, South Dakota. It was built in 1998, so it is 27 years old, younger than the South Dakota average of 48.9 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 75 by 2043. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Channel and channel protection | 9 Excellent | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD1806EF over Diversion Channel built?
It was built in 1998, making it 27 years old in 2025.
What condition is SD1806EF over Diversion Channel 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 November 2023.
How much traffic does SD1806EF over Diversion Channel carry?
About 50 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is SD1806EF over Diversion Channel?
The structure is 29 ft (8.7 m) long with a longest span of 14 ft (4.3 m).
Who owns SD1806EF over Diversion Channel?
It is owned by the State Highway Agency.