US Bridges

SR 346-PA 346 over Knapp Creek

Good

McKean County, Pennsylvania · Prentisvale · Structure no. 000000000046254

Built
2010
15 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
1,147
2024 count
Owner
State
State Highway Agency

About this bridge

SR 346-PA 346 over Knapp Creek is a prestressed concrete box beam or girders - multiple carrying SR 346-PA 346 over Knapp Creek in McKean County, Pennsylvania. It was built in 2010, so it is 15 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,147 vehicles a day, roughly 5% of them trucks, projected to reach 1,386 by 2043. The structure is 85 ft (25.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR 346-PA 346
CrossesKnapp Creek
LocationPrentisvale
RouteState Highway 346
CountyMcKean County
StatePennsylvania
Coordinates41.93415, -78.44275
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length85 ft (25.9 m)
Longest span84 ft (25.6 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,147 (2024)
Projected traffic1,386 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Knapp Creek built?

It was built in 2010, making it 15 years old in 2025.

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

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does SR 346-PA 346 over Knapp Creek carry?

About 1,147 vehicles per day (2024 count), of which roughly 5% are trucks.

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

The structure is 85 ft (25.9 m) long with a longest span of 84 ft (25.6 m) and a deck 31 ft wide.

Who owns SR 346-PA 346 over Knapp Creek?

It is owned by the State Highway Agency.