US Bridges

On Tsr 807 over Allegheny River

Fair

Potter County, Pennsylvania · Olmstead · Structure no. 000000000030392

Built
1892
133 years old, rebuilt 1983
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
97
2024 count
Owner
State
State Highway Agency

About this bridge

On Tsr 807 over Allegheny River is a steel stringer/multi-beam or girder carrying On Tsr 807 over Allegheny River in Potter County, Pennsylvania. It was built in 1892 and reconstructed in 1983, so it is 133 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 97 vehicles a day, roughly 1% of them trucks, projected to reach 187 by 2043. The structure is 67 ft (20.4 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesOn Tsr 807
CrossesAllegheny River
LocationOlmstead
RouteState Highway 0
CountyPotter County
StatePennsylvania
Coordinates41.74881, -78.06547
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length67 ft (20.4 m)
Longest span60 ft (18.3 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2024)
Projected traffic187 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$595,000
NavigationNo navigation control on waterway

Frequently asked questions

When was On Tsr 807 over Allegheny River built?

It was built in 1892, making it 133 years old in 2025. It was reconstructed in 1983.

What condition is On Tsr 807 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 July 2023.

How much traffic does On Tsr 807 over Allegheny River carry?

About 97 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is On Tsr 807 over Allegheny River?

The structure is 67 ft (20.4 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns On Tsr 807 over Allegheny River?

It is owned by the State Highway Agency.