US Bridges

Pa Tpk (I-76) over Turtle Creek RR

Fair

Allegheny County, Pennsylvania · Near Allegh-Westmld CO LN · Structure no. 000000000002109

Built
1952
73 years old, rebuilt 1992
Condition
Fair
inspected June 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
46,261
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Turtle Creek RR is a steel stringer/multi-beam or girder carrying Pa Tpk (I-76) over Turtle Creek RR in Allegheny County, Pennsylvania. It was built in 1952 and reconstructed in 1992, 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 46,261 vehicles a day, roughly 16% of them trucks, projected to reach 48,038 by 2030. The structure is 31 ft (9.4 m) long and 86 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesTurtle Creek RR
LocationNear Allegh-Westmld CO LN
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.40987, -79.72419
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating84 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width86 ft (26.1 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,261 (2004)
Projected traffic48,038 by 2030
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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$786,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over Turtle Creek RR built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1992.

What condition is Pa Tpk (I-76) over Turtle Creek RR 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 June 2022.

How much traffic does Pa Tpk (I-76) over Turtle Creek RR carry?

About 46,261 vehicles per day (2004 count), of which roughly 16% are trucks.

How long is Pa Tpk (I-76) over Turtle Creek RR?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 86 ft wide.

Who owns Pa Tpk (I-76) over Turtle Creek RR?

It is owned by the State Toll Authority.