Pa Tpk (I-476) over Lehigh River
FairCarbon County, Pennsylvania · Carbon & Luzerne Co. Line · Structure no. 000000000009174
- Built
- 1955
- 70 years old, rebuilt 1989
- Condition
- Fair
- inspected September 2023
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 580 ft
- 5 main spans
- Daily traffic
- 14,889
- 2003 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
Pa Tpk (I-476) over Lehigh River is a steel continuous girder and floorbeam system carrying Pa Tpk (I-476) over Lehigh River in Carbon County, Pennsylvania. It was built in 1955 and reconstructed in 1989, so it is 70 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.
It carries about 14,889 vehicles a day, roughly 20% of them trucks, projected to reach 20,000 by 2030. The structure is 580 ft (176.8 m) long and 61 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Pa Tpk (I-476) over Lehigh River built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1989.
What condition is Pa Tpk (I-476) over Lehigh 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 September 2023.
How much traffic does Pa Tpk (I-476) over Lehigh River carry?
About 14,889 vehicles per day (2003 count), of which roughly 20% are trucks.
How long is Pa Tpk (I-476) over Lehigh River?
The structure is 580 ft (176.8 m) long with a longest span of 140 ft (42.7 m) and a deck 61 ft wide.
Who owns Pa Tpk (I-476) over Lehigh River?
It is owned by the State Toll Authority.