US Bridges

Pa Tpk (I-76) WB over SR1001 N.S. Av. R

Good

Allegheny County, Pennsylvania · Allegheny River · Structure no. 000000000046492

Built
2010
15 years old
Condition
Good
inspected May 2023
Type
Segmental Box Girder
Concrete Continuous
Length
2,350 ft
6 main spans
Daily traffic
16,799
2010 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) WB over SR1001 N.S. Av. R is a concrete continuous segmental box girder carrying Pa Tpk (I-76) WB over SR1001 N.S. Av. R in Allegheny County, Pennsylvania. It was built in 2010, so it is 15 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 16,799 vehicles a day, roughly 17% of them trucks, projected to reach 19,819 by 2030. The structure is 2,350 ft (716.3 m) long and 61 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76) WB
CrossesSR1001 N.S. Av. R
LocationAllegheny River
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.53833, -79.82167
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating36 US tons

Structure

Structure typeSegmental Box Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length2,350 ft (716.3 m)
Longest span532 ft (162.2 m)
Deck width61 ft (18.7 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,799 (2010)
Projected traffic19,819 by 2030
Trucks17%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed21.7 mi (35 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Pa Tpk (I-76) WB over SR1001 N.S. Av. R built?

It was built in 2010, making it 15 years old in 2025.

What condition is Pa Tpk (I-76) WB over SR1001 N.S. Av. R 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 2023.

How much traffic does Pa Tpk (I-76) WB over SR1001 N.S. Av. R carry?

About 16,799 vehicles per day (2010 count), of which roughly 17% are trucks.

How long is Pa Tpk (I-76) WB over SR1001 N.S. Av. R?

The structure is 2,350 ft (716.3 m) long with a longest span of 532 ft (162.2 m) and a deck 61 ft wide.

Who owns Pa Tpk (I-76) WB over SR1001 N.S. Av. R?

It is owned by the State Toll Authority.