US Bridges

On Tsr 305 over Lower Three Runs

Fair

Clinton County, Pennsylvania · 2 MI East of Pottersdale · Structure no. 000000000012381

Built
1940
85 years old, rebuilt 1989
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
75
2024 count
Owner
State
State Highway Agency

About this bridge

On Tsr 305 over Lower Three Runs is a steel stringer/multi-beam or girder carrying On Tsr 305 over Lower Three Runs in Clinton County, Pennsylvania. It was built in 1940 and reconstructed in 1989, so it is 85 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 75 vehicles a day, roughly 3% of them trucks, projected to reach 55 by 2044. The structure is 24 ft (7.3 m) long and 23 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

CarriesOn Tsr 305
CrossesLower Three Runs
Location2 MI East of Pottersdale
RouteState Highway 0
Coordinates41.18169, -78.05182
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating96 US tons
Inventory rating57 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic55 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$423,000
NavigationNo navigation control on waterway

Frequently asked questions

When was On Tsr 305 over Lower Three Runs built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1989.

What condition is On Tsr 305 over Lower Three Runs 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 October 2024.

How much traffic does On Tsr 305 over Lower Three Runs carry?

About 75 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is On Tsr 305 over Lower Three Runs?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 23 ft wide.

Who owns On Tsr 305 over Lower Three Runs?

It is owned by the State Highway Agency.