Thouron RD (T-378) over Trib to Doe Run
FairPosted for loadChester County, Pennsylvania · W Marlborough Twp 3689-H6 · Structure no. 000000000010673
- Built
- 1919
- 106 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 150
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Thouron RD (T-378) over Trib to Doe Run is a steel stringer/multi-beam or girder carrying Thouron RD (T-378) over Trib to Doe Run in Chester County, Pennsylvania. It was built in 1919, so it is 106 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. Its operating status is: posted for load restriction.
It carries about 150 vehicles a day, roughly 20% of them trucks, projected to reach 183 by 2039. The structure is 27 ft (8.2 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thouron RD (T-378) over Trib to Doe Run built?
It was built in 1919, making it 106 years old in 2025.
What condition is Thouron RD (T-378) over Trib to Doe Run 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 June 2024.
How much traffic does Thouron RD (T-378) over Trib to Doe Run carry?
About 150 vehicles per day (2019 count), of which roughly 20% are trucks.
How long is Thouron RD (T-378) over Trib to Doe Run?
The structure is 27 ft (8.2 m) long with a longest span of 20 ft (6.1 m) and a deck 21 ft wide.
Who owns Thouron RD (T-378) over Trib to Doe Run?
It is owned by the County Highway Agency.