US Bridges

SR 346-PA 346 over West Branch Tunungwant C

Fair

McKean County, Pennsylvania · City of Bradford · Structure no. 000000000025415

Built
1905
120 years old, rebuilt 1990
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
7,876
2024 count
Owner
State
State Highway Agency

About this bridge

SR 346-PA 346 over West Branch Tunungwant C is a prestressed concrete box beam or girders - multiple carrying SR 346-PA 346 over West Branch Tunungwant C in McKean County, Pennsylvania. It was built in 1905 and reconstructed in 1990, so it is 120 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 6 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 7,876 vehicles a day, roughly 4% of them trucks, projected to reach 13,964 by 2044. The structure is 78 ft (23.8 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 346-PA 346
CrossesWest Branch Tunungwant C
LocationCity of Bradford
RouteState Highway 346
CountyMcKean County
StatePennsylvania
Coordinates41.95673, -78.65142
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating61.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length78 ft (23.8 m)
Longest span76 ft (23.2 m)
Deck width55 ft (16.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,876 (2024)
Projected traffic13,964 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 346-PA 346 over West Branch Tunungwant C built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1990.

What condition is SR 346-PA 346 over West Branch Tunungwant C 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 SR 346-PA 346 over West Branch Tunungwant C carry?

About 7,876 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 346-PA 346 over West Branch Tunungwant C?

The structure is 78 ft (23.8 m) long with a longest span of 76 ft (23.2 m) and a deck 55 ft wide.

Who owns SR 346-PA 346 over West Branch Tunungwant C?

It is owned by the State Highway Agency.