455 Avenue over Mahoney Ck
PoorCodington County, South Dakota · 3.3 S JCT Sd 20 E · Structure no. 000000015190063
- Built
- 1940
- 85 years old
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 79 ft
- 3 main spans
- Daily traffic
- 1,167
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
455 Avenue over Mahoney Ck is a steel stringer/multi-beam or girder carrying 455 Avenue over Mahoney Ck in Codington County, South Dakota. It was built in 1940, so it is 85 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 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.
It carries about 1,167 vehicles a day, roughly 2% of them trucks, projected to reach 1,300 by 2038. The structure is 79 ft (24.2 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, 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 455 Avenue over Mahoney Ck built?
It was built in 1940, making it 85 years old in 2025.
What condition is 455 Avenue over Mahoney Ck 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 June 2024.
How much traffic does 455 Avenue over Mahoney Ck carry?
About 1,167 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 455 Avenue over Mahoney Ck?
The structure is 79 ft (24.2 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.
Who owns 455 Avenue over Mahoney Ck?
It is owned by the County Highway Agency.