391st Avenue over Moccasin Creek
FairPosted for loadBrown County, South Dakota · 2.3N & 5W of Stratford · Structure no. 000000007150407
- Built
- 1958
- 67 years old
- Condition
- Fair
- inspected August 2023
- Type
- Slab
- Concrete Continuous
- Length
- 106 ft
- 3 main spans
- Daily traffic
- 141
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
391st Avenue over Moccasin Creek is a concrete continuous slab carrying 391st Avenue over Moccasin Creek in Brown County, South Dakota. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.
It carries about 141 vehicles a day, roughly 3% of them trucks, projected to reach 141 by 2032. The structure is 106 ft (32.3 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 391st Avenue over Moccasin Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is 391st Avenue over Moccasin Creek 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 August 2023.
How much traffic does 391st Avenue over Moccasin Creek carry?
About 141 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is 391st Avenue over Moccasin Creek?
The structure is 106 ft (32.3 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.
Who owns 391st Avenue over Moccasin Creek?
It is owned by the County Highway Agency.