US Bridges

Pa 56 over Seese Run

Fair

Somerset County, Pennsylvania · .25 Mi.E.Of Windber · Structure no. 000000000031351

Built
1959
66 years old, rebuilt 1992
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
4,460
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 56 over Seese Run is a prestressed concrete box beam or girders - multiple carrying Pa 56 over Seese Run in Somerset County, Pennsylvania. It was built in 1959 and reconstructed in 1992, so it is 66 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 4,460 vehicles a day, roughly 11% of them trucks, projected to reach 5,709 by 2032. The structure is 61 ft (18.6 m) long and 59 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPa 56
CrossesSeese Run
Location.25 Mi.E.Of Windber
RouteState Highway 56
CountySomerset County
StatePennsylvania
Coordinates40.21845, -78.81506
Functional classUrban Other Principal 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating51 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length61 ft (18.6 m)
Longest span59 ft (18 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,460 (2023)
Projected traffic5,709 by 2032
Trucks11%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 56 over Seese Run built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1992.

What condition is Pa 56 over Seese Run 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 August 2023.

How much traffic does Pa 56 over Seese Run carry?

About 4,460 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Pa 56 over Seese Run?

The structure is 61 ft (18.6 m) long with a longest span of 59 ft (18 m) and a deck 59 ft wide.

Who owns Pa 56 over Seese Run?

It is owned by the State Highway Agency.