Ft. Sill Blvd over Unknown Creek
FairComanche County, Oklahoma · Fort Sill Army Post · Structure no. DAPTRASIL0PB02
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 26 ft
- 3 main spans
- Daily traffic
- 3,000
- 2024 count
- Owner
- Federal
- Army
About this bridge
Ft. Sill Blvd over Unknown Creek is a concrete culvert carrying Ft. Sill Blvd over Unknown Creek in Comanche County, Oklahoma. It was built in 1960, so it is 65 years old, older than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 3,000 vehicles a day, roughly 10% of them trucks, projected to reach 3,500 by 2046. The structure is 26 ft (7.9 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ft. Sill Blvd over Unknown Creek built?
It was built in 1960, making it 65 years old in 2025.
What condition is Ft. Sill Blvd over Unknown 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 July 2024.
How much traffic does Ft. Sill Blvd over Unknown Creek carry?
About 3,000 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is Ft. Sill Blvd over Unknown Creek?
The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 60 ft wide.
Who owns Ft. Sill Blvd over Unknown Creek?
It is owned by the Army.