27720 363rd Avenue over Platte Creek
PoorPosted for loadCharles Mix County, South Dakota · 1.2S & 4.0W of Platte · Structure no. 000000012190092
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected October 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 48
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
27720 363rd Avenue over Platte Creek is a prestressed concrete tee beam carrying 27720 363rd Avenue over Platte Creek in Charles Mix County, South Dakota. It was built in 1977, so it is 48 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 48 vehicles a day, roughly 2% of them trucks, projected to reach 48 by 2032. The structure is 80 ft (24.4 m) long and 27 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 27720 363rd Avenue over Platte Creek built?
It was built in 1977, making it 48 years old in 2025.
What condition is 27720 363rd Avenue over Platte Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.
How much traffic does 27720 363rd Avenue over Platte Creek carry?
About 48 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 27720 363rd Avenue over Platte Creek?
The structure is 80 ft (24.4 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.
Who owns 27720 363rd Avenue over Platte Creek?
It is owned by the County Highway Agency.