US Bridges

SR 346-PA 346 over Willow Creek

Poor

McKean County, Pennsylvania · 9 MI W Bradford · Structure no. 000000000025405

Built
1940
85 years old, rebuilt 1960
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 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 steel stringer/multi-beam or girder carrying SR 346-PA 346 over Willow Creek in McKean County, Pennsylvania. It was built in 1940 and reconstructed in 1960, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 520 vehicles a day, roughly 4% of them trucks, projected to reach 778 by 2042. The structure is 38 ft (11.6 m) long and 38 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
Location9 MI W Bradford
RouteState Highway 346
CountyMcKean County
StatePennsylvania
Coordinates41.96118, -78.80144
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width38 ft (11.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2023)
Projected traffic778 by 2042
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$474,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 346-PA 346 over Willow Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1960.

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

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. 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 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 38 ft wide.

Who owns SR 346-PA 346 over Willow Creek?

It is owned by the State Highway Agency.