US Bridges

Pa Tpk (I-76) over Trout Run

Fair

Franklin County, Pennsylvania · Between Blue & Kit Tunls · Structure no. 000000000017628

Built
1939
86 years old, rebuilt 2001
Condition
Fair
inspected December 2022
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
21,433
2001 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Trout Run is a concrete slab carrying Pa Tpk (I-76) over Trout Run in Franklin County, Pennsylvania. It was built in 1939 and reconstructed in 2001, so it is 86 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 5 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 21,433 vehicles a day, roughly 38% of them trucks, projected to reach 24,099 by 2030. The structure is 30 ft (9.1 m) long and 118 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesTrout Run
LocationBetween Blue & Kit Tunls
RouteInterstate 76
CountyFranklin County
StatePennsylvania
Coordinates40.14963, -77.66211
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span26 ft (7.9 m)
Deck width118 ft (35.9 m)
Roadway width61 ft (18.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,433 (2001)
Projected traffic24,099 by 2030
Trucks38%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$161,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over Trout Run built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2001.

What condition is Pa Tpk (I-76) over Trout 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 December 2022.

How much traffic does Pa Tpk (I-76) over Trout Run carry?

About 21,433 vehicles per day (2001 count), of which roughly 38% are trucks.

How long is Pa Tpk (I-76) over Trout Run?

The structure is 30 ft (9.1 m) long with a longest span of 26 ft (7.9 m) and a deck 118 ft wide.

Who owns Pa Tpk (I-76) over Trout Run?

It is owned by the State Toll Authority.