Northwestern Ave over Mitchell Ck
FairHaakon County, South Dakota · Midland · Structure no. 000000028429470
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 91 ft
- 3 main spans
- Daily traffic
- 45
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Northwestern Ave over Mitchell Ck is a prestressed concrete tee beam carrying Northwestern Ave over Mitchell Ck in Haakon County, South Dakota. It was built in 1965, so it is 60 years old, older than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 45 vehicles a day, roughly 2% of them trucks, projected to reach 45 by 2032. The structure is 91 ft (27.7 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Northwestern Ave over Mitchell Ck built?
It was built in 1965, making it 60 years old in 2025.
What condition is Northwestern Ave over Mitchell Ck in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does Northwestern Ave over Mitchell Ck carry?
About 45 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is Northwestern Ave over Mitchell Ck?
The structure is 91 ft (27.7 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.
Who owns Northwestern Ave over Mitchell Ck?
It is owned by the County Highway Agency.