T-306 Keystone RD over Lehigh River
PoorClosed to trafficLackawanna County, Pennsylvania · Clifton 0.2 MI NW SR 435 · Structure no. 000000000020855
- Built
- 1956
- 69 years old
- Condition
- Poor
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 73 ft
- 1 main span
- Daily traffic
- 60
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
T-306 Keystone RD over Lehigh River is a steel stringer/multi-beam or girder carrying T-306 Keystone RD over Lehigh River in Lackawanna County, Pennsylvania. It was built in 1956, so it is 69 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 1 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.
It carries about 60 vehicles a day, projected to reach 80 by 2037. The structure is 73 ft (22.3 m) long and 20 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 1 Imminent Failure | Major deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was T-306 Keystone RD over Lehigh River built?
It was built in 1956, making it 69 years old in 2025.
What condition is T-306 Keystone RD over Lehigh River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.
How much traffic does T-306 Keystone RD over Lehigh River carry?
About 60 vehicles per day (2019 count).
How long is T-306 Keystone RD over Lehigh River?
The structure is 73 ft (22.3 m) long with a longest span of 72 ft (21.9 m) and a deck 20 ft wide.
Who owns T-306 Keystone RD over Lehigh River?
It is owned by the County Highway Agency.