Herrs Island RD over Allegheny River
FairAllegheny County, Pennsylvania · 041 30th ST Bridge (herrs · Structure no. 000000000002417
- Built
- 1986
- 39 years old, rebuilt 2022
- Condition
- Fair
- inspected November 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 282 ft
- 1 main span
- Daily traffic
- 800
- 2004 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Herrs Island RD over Allegheny River is a steel stringer/multi-beam or girder carrying Herrs Island RD over Allegheny River in Allegheny County, Pennsylvania. It was built in 1986 and reconstructed in 2022, so it is 39 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 800 vehicles a day, roughly 3% of them trucks, projected to reach 880 by 2030. The structure is 282 ft (86 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Herrs Island RD over Allegheny River built?
It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2022.
What condition is Herrs Island RD over Allegheny River 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 November 2022.
How much traffic does Herrs Island RD over Allegheny River carry?
About 800 vehicles per day (2004 count), of which roughly 3% are trucks.
How long is Herrs Island RD over Allegheny River?
The structure is 282 ft (86 m) long with a longest span of 177 ft (53.9 m) and a deck 38 ft wide.
Who owns Herrs Island RD over Allegheny River?
It is owned by the City or Municipal Highway Agency.