US Bridges

SR 6-US 6 over Allegheny River

Fair

Potter County, Pennsylvania · Coudersport Boro · Structure no. 000000000030092

Built
1934
91 years old, rebuilt 2006
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
117 ft
1 main span
Daily traffic
6,354
2023 count
Owner
State
State Highway Agency

About this bridge

SR 6-US 6 over Allegheny River is a steel truss - thru carrying SR 6-US 6 over Allegheny River in Potter County, Pennsylvania. It was built in 1934 and reconstructed in 2006, so it is 91 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 6,354 vehicles a day, roughly 11% of them trucks, projected to reach 10,011 by 2044. The structure is 117 ft (35.7 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesSR 6-US 6
CrossesAllegheny River
LocationCoudersport Boro
RouteU.S. Route 6
CountyPotter County
StatePennsylvania
Coordinates41.76978, -78.02504
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating42 US tons
Inventory rating31 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length117 ft (35.7 m)
Longest span112 ft (34.1 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,354 (2023)
Projected traffic10,011 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

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$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 6-US 6 over Allegheny River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2006.

What condition is SR 6-US 6 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 October 2024.

How much traffic does SR 6-US 6 over Allegheny River carry?

About 6,354 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 6-US 6 over Allegheny River?

The structure is 117 ft (35.7 m) long with a longest span of 112 ft (34.1 m) and a deck 34 ft wide.

Who owns SR 6-US 6 over Allegheny River?

It is owned by the State Highway Agency.