US Bridges

SR 4070 over Pa Tpk (I-76)

Good

Allegheny County, Pennsylvania · East of Butler Valley Int · Structure no. 000000000048641

Built
2013
12 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
133 ft
1 main span
Daily traffic
4,546
2011 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 4070 over Pa Tpk (I-76) is a prestressed concrete stringer/multi-beam or girder carrying SR 4070 over Pa Tpk (I-76) in Allegheny County, Pennsylvania. It was built in 2013, so it is 12 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 4,546 vehicles a day, roughly 5% of them trucks, projected to reach 5,703 by 2030. The structure is 133 ft (40.5 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 4070
CrossesPa Tpk (I-76)
LocationEast of Butler Valley Int
RouteState Highway 4070
CountyAllegheny County
StatePennsylvania
Coordinates40.59984, -79.93054
Functional classUrban Local

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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length133 ft (40.5 m)
Longest span133 ft (40.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,546 (2011)
Projected traffic5,703 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 4070 over Pa Tpk (I-76) built?

It was built in 2013, making it 12 years old in 2025.

What condition is SR 4070 over Pa Tpk (I-76) 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 April 2024.

How much traffic does SR 4070 over Pa Tpk (I-76) carry?

About 4,546 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is SR 4070 over Pa Tpk (I-76)?

The structure is 133 ft (40.5 m) long with a longest span of 133 ft (40.5 m) and a deck 47 ft wide.

Who owns SR 4070 over Pa Tpk (I-76)?

It is owned by the State Toll Authority.