SD020 over Gap Ck
FairHarding County, South Dakota · 2.1 W JCT Sd 79 S · Structure no. 000000032451284
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 167 ft
- 3 main spans
- Daily traffic
- 191
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD020 over Gap Ck is a steel continuous stringer/multi-beam or girder carrying SD020 over Gap Ck in Harding County, South Dakota. It was built in 1959, so it is 66 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 191 vehicles a day, roughly 19% of them trucks, projected to reach 250 by 2044. The structure is 167 ft (50.9 m) long and 32 ft wide. If it were closed, the detour would be 72.7 mi (117 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD020 over Gap Ck built?
It was built in 1959, making it 66 years old in 2025.
What condition is SD020 over Gap 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 April 2023.
How much traffic does SD020 over Gap Ck carry?
About 191 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is SD020 over Gap Ck?
The structure is 167 ft (50.9 m) long with a longest span of 64 ft (19.5 m) and a deck 32 ft wide.
Who owns SD020 over Gap Ck?
It is owned by the State Highway Agency.