US Bridges

Patpk Ramp Ab over Pa Tpk (I-76)

Fair

Allegheny County, Pennsylvania · Butler Valley Interchange · Structure no. 000000000002067

Built
1952
73 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
8,559
1993 count
Owner
Toll Authority
State Toll Authority

About this bridge

Patpk Ramp Ab over Pa Tpk (I-76) is a steel stringer/multi-beam or girder carrying Patpk Ramp Ab over Pa Tpk (I-76) in Allegheny County, Pennsylvania. It was built in 1952, 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 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 8,559 vehicles a day, roughly 8% of them trucks, projected to reach 12,690 by 2030. The structure is 90 ft (27.4 m) long and 41 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesPatpk Ramp Ab
CrossesPa Tpk (I-76)
LocationButler Valley Interchange
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.60887, -79.94669
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating103.9 US tons
Inventory rating61.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span85 ft (25.9 m)
Deck width41 ft (12.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,559 (1993)
Projected traffic12,690 by 2030
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed98.8 mi (159 km)
TollOn a toll road
National Highway SystemYes

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$448,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Patpk Ramp Ab over Pa Tpk (I-76) built?

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

What condition is Patpk Ramp Ab over Pa Tpk (I-76) 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 Patpk Ramp Ab over Pa Tpk (I-76) carry?

About 8,559 vehicles per day (1993 count), of which roughly 8% are trucks.

How long is Patpk Ramp Ab over Pa Tpk (I-76)?

The structure is 90 ft (27.4 m) long with a longest span of 85 ft (25.9 m) and a deck 41 ft wide.

Who owns Patpk Ramp Ab over Pa Tpk (I-76)?

It is owned by the State Toll Authority.