487th Ave HWY 103 over Four Mile Creek
FairMinnehaha County, South Dakota · 2.6S Valley Springs · Structure no. 000000050330206
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected June 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 535
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
487th Ave HWY 103 over Four Mile Creek is a prestressed concrete tee beam carrying 487th Ave HWY 103 over Four Mile Creek in Minnehaha County, South Dakota. It was built in 1987, so it is 38 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 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 535 vehicles a day, roughly 3% of them trucks, projected to reach 621 by 2038. The structure is 52 ft (15.8 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 487th Ave HWY 103 over Four Mile Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is 487th Ave HWY 103 over Four Mile 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 June 2024.
How much traffic does 487th Ave HWY 103 over Four Mile Creek carry?
About 535 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is 487th Ave HWY 103 over Four Mile Creek?
The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.
Who owns 487th Ave HWY 103 over Four Mile Creek?
It is owned by the County Highway Agency.