US Bridges

Pa Tpk (I-76) over Stonycreek River

Fair

Somerset County, Pennsylvania · Near Brotherton · Structure no. 000000000031819

Built
2004
21 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
95 ft
2 main spans
Daily traffic
29,452
1999 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Stonycreek River is a steel continuous stringer/multi-beam or girder carrying Pa Tpk (I-76) over Stonycreek River in Somerset County, Pennsylvania. It was built in 2004, so it is 21 years old, younger 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 29,452 vehicles a day, roughly 36% of them trucks, projected to reach 42,630 by 2030. The structure is 95 ft (29 m) long and 99 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesStonycreek River
LocationNear Brotherton
RouteInterstate 76
CountySomerset County
StatePennsylvania
Coordinates39.97167, -78.90833
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length95 ft (29 m)
Longest span47 ft (14.3 m)
Deck width99 ft (30.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,452 (1999)
Projected traffic42,630 by 2030
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over Stonycreek River built?

It was built in 2004, making it 21 years old in 2025.

What condition is Pa Tpk (I-76) over Stonycreek River 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 April 2023.

How much traffic does Pa Tpk (I-76) over Stonycreek River carry?

About 29,452 vehicles per day (1999 count), of which roughly 36% are trucks.

How long is Pa Tpk (I-76) over Stonycreek River?

The structure is 95 ft (29 m) long with a longest span of 47 ft (14.3 m) and a deck 99 ft wide.

Who owns Pa Tpk (I-76) over Stonycreek River?

It is owned by the State Toll Authority.