Keystone Avenue over Swatara Creek
FairDauphin County, Pennsylvania · Swatara Cr; Middletown · Structure no. 000000000014751
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 263 ft
- 4 main spans
- Daily traffic
- 1,200
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Keystone Avenue over Swatara Creek is a prestressed concrete box beam or girders - multiple carrying Keystone Avenue over Swatara Creek in Dauphin County, Pennsylvania. It was built in 1977, so it is 48 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 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 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,680 by 2043. The structure is 263 ft (80.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Keystone Avenue over Swatara Creek built?
It was built in 1977, making it 48 years old in 2025.
What condition is Keystone Avenue over Swatara 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 2023.
How much traffic does Keystone Avenue over Swatara Creek carry?
About 1,200 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Keystone Avenue over Swatara Creek?
The structure is 263 ft (80.2 m) long with a longest span of 65 ft (19.8 m) and a deck 36 ft wide.
Who owns Keystone Avenue over Swatara Creek?
It is owned by the County Highway Agency.