US Bridges

SR 346-PA 346 over Willow Creek

Fair

McKean County, Pennsylvania · 12 MI W Bradford · Structure no. 000000000025401

Built
1968
57 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
520
2023 count
Owner
State
State Highway Agency

About this bridge

SR 346-PA 346 over Willow Creek is a prestressed concrete box beam or girders - multiple carrying SR 346-PA 346 over Willow Creek in McKean County, Pennsylvania. It was built in 1968, so it is 57 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 520 vehicles a day, roughly 4% of them trucks, projected to reach 778 by 2044. The structure is 47 ft (14.3 m) long and 45 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

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CarriesSR 346-PA 346
CrossesWillow Creek
Location12 MI W Bradford
RouteState Highway 346
CountyMcKean County
StatePennsylvania
Coordinates41.96526, -78.84746
Functional classRural Major 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
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; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span46 ft (14 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2023)
Projected traffic778 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 Willow Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is SR 346-PA 346 over Willow Creek 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 Willow Creek carry?

About 520 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 346-PA 346 over Willow Creek?

The structure is 47 ft (14.3 m) long with a longest span of 46 ft (14 m) and a deck 45 ft wide.

Who owns SR 346-PA 346 over Willow Creek?

It is owned by the State Highway Agency.