T-459 Grist Mill over Quakake Creek
FairCarbon County, Pennsylvania · Grist Mill Rd.N.Of SR4010 · Structure no. 000000000009128
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected September 2023
- Type
- Channel Beam
- Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 100
- 1979 count
- Owner
- County
- County Highway Agency
About this bridge
T-459 Grist Mill over Quakake Creek is a concrete channel beam carrying T-459 Grist Mill over Quakake Creek in Carbon County, Pennsylvania. It was built in 1991, so it is 34 years old, younger 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.
It carries about 100 vehicles a day, roughly 1% of them trucks, projected to reach 140 by 2009. The structure is 34 ft (10.4 m) long and 31 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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-459 Grist Mill over Quakake Creek built?
It was built in 1991, making it 34 years old in 2025.
What condition is T-459 Grist Mill over Quakake 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 September 2023.
How much traffic does T-459 Grist Mill over Quakake Creek carry?
About 100 vehicles per day (1979 count), of which roughly 1% are trucks.
How long is T-459 Grist Mill over Quakake Creek?
The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 31 ft wide.
Who owns T-459 Grist Mill over Quakake Creek?
It is owned by the County Highway Agency.