US Bridges

Ewing Road over SR 0079 Nb-Sb

Good

Allegheny County, Pennsylvania · 1/4 Mi. N. Carn. I-79 Int · Structure no. 000000000001796

Built
1972
53 years old, rebuilt 2006
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
383 ft
4 main spans
Daily traffic
2,610
2024 count
Owner
State
State Highway Agency

About this bridge

Ewing Road over SR 0079 Nb-Sb is a prestressed concrete stringer/multi-beam or girder carrying Ewing Road over SR 0079 Nb-Sb in Allegheny County, Pennsylvania. It was built in 1972 and reconstructed in 2006, so it is 53 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 2,610 vehicles a day, roughly 2% of them trucks, projected to reach 3,631 by 2032. The structure is 383 ft (116.7 m) long and 39 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesEwing Road
CrossesSR 0079 Nb-Sb
Location1/4 Mi. N. Carn. I-79 Int
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.4047, -80.10735
Functional classUrban Collector

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 inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating108 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length383 ft (116.7 m)
Longest span142 ft (43.3 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,610 (2024)
Projected traffic3,631 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ewing Road over SR 0079 Nb-Sb built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2006.

What condition is Ewing Road over SR 0079 Nb-Sb 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 November 2023.

How much traffic does Ewing Road over SR 0079 Nb-Sb carry?

About 2,610 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Ewing Road over SR 0079 Nb-Sb?

The structure is 383 ft (116.7 m) long with a longest span of 142 ft (43.3 m) and a deck 39 ft wide.

Who owns Ewing Road over SR 0079 Nb-Sb?

It is owned by the State Highway Agency.