US Bridges

Pa Tpk (I-76) over Pa Tpk (ramp Bc)

Good

Allegheny County, Pennsylvania · Allegheny Valley Interch · Structure no. 000000000047089

Built
2011
14 years old
Condition
Good
inspected May 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
1 main span
Daily traffic
46,240
2010 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Pa Tpk (ramp Bc) is a steel stringer/multi-beam or girder carrying Pa Tpk (I-76) over Pa Tpk (ramp Bc) in Allegheny County, Pennsylvania. It was built in 2011, so it is 14 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 46,240 vehicles a day, roughly 10% of them trucks, projected to reach 75,820 by 2030. The structure is 107 ft (32.6 m) long and 128 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesPa Tpk (ramp Bc)
LocationAllegheny Valley Interch
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.54, -79.82
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2022
Inspection intervalevery 48 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 rating58.2 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length107 ft (32.6 m)
Longest span100 ft (30.5 m)
Deck width128 ft (39.1 m)
Roadway width121 ft (36.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,240 (2010)
Projected traffic75,820 by 2030
Trucks10%
Lanes on structure4
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over Pa Tpk (ramp Bc) built?

It was built in 2011, making it 14 years old in 2025.

What condition is Pa Tpk (I-76) over Pa Tpk (ramp Bc) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2022.

How much traffic does Pa Tpk (I-76) over Pa Tpk (ramp Bc) carry?

About 46,240 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Pa Tpk (I-76) over Pa Tpk (ramp Bc)?

The structure is 107 ft (32.6 m) long with a longest span of 100 ft (30.5 m) and a deck 128 ft wide.

Who owns Pa Tpk (I-76) over Pa Tpk (ramp Bc)?

It is owned by the State Toll Authority.