US Bridges

Pa Tpk (I-76) over T-600

Fair

Allegheny County, Pennsylvania · East of Butler Val Intg · Structure no. 000000000002068

Built
1952
73 years old, rebuilt 2019
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
31,140
2008 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over T-600 is a concrete tee beam carrying Pa Tpk (I-76) over T-600 in Allegheny County, Pennsylvania. It was built in 1952 and reconstructed in 2019, so it is 73 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 31,140 vehicles a day, roughly 21% of them trucks, projected to reach 44,880 by 2030. The structure is 28 ft (8.5 m) long and 126 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesPa Tpk (I-76)
CrossesT-600
LocationEast of Butler Val Intg
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.60741, -79.94281
Functional classUrban 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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width126 ft (38.4 m)
Roadway width100 ft (30.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,140 (2008)
Projected traffic44,880 by 2030
Trucks21%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over T-600 built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2019.

What condition is Pa Tpk (I-76) over T-600 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 2024.

How much traffic does Pa Tpk (I-76) over T-600 carry?

About 31,140 vehicles per day (2008 count), of which roughly 21% are trucks.

How long is Pa Tpk (I-76) over T-600?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 126 ft wide.

Who owns Pa Tpk (I-76) over T-600?

It is owned by the State Toll Authority.