T-720 Miller Road over Cowanshannock Creek
FairPosted for loadArmstrong County, Pennsylvania · 600 Feet South of SR-1026 · Structure no. 000000000003358
- Built
- 1918
- 107 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 25 ft
- 1 main span
- Daily traffic
- 31
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T-720 Miller Road over Cowanshannock Creek is a steel stringer/multi-beam or girder carrying T-720 Miller Road over Cowanshannock Creek in Armstrong County, Pennsylvania. It was built in 1918, so it is 107 years old, older than the Pennsylvania average of 54.8 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. Its operating status is: posted for load restriction.
It carries about 31 vehicles a day, roughly 9% of them trucks, projected to reach 35 by 2042. The structure is 25 ft (7.6 m) long and 20 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| 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 T-720 Miller Road over Cowanshannock Creek built?
It was built in 1918, making it 107 years old in 2025.
What condition is T-720 Miller Road over Cowanshannock 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 March 2023.
How much traffic does T-720 Miller Road over Cowanshannock Creek carry?
About 31 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is T-720 Miller Road over Cowanshannock Creek?
The structure is 25 ft (7.6 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.
Who owns T-720 Miller Road over Cowanshannock Creek?
It is owned by the Town or Township Highway Agency.