US Bridges

Forest Grove RD over SR 0079 Nb-Sb

Good

Allegheny County, Pennsylvania · M0008 Moon Run No. 8 · Structure no. 000000000045699

Built
2009
16 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
556 ft
5 main spans
Daily traffic
5,693
2024 count
Owner
State
State Highway Agency

About this bridge

Forest Grove RD over SR 0079 Nb-Sb is a prestressed concrete continuous stringer/multi-beam or girder carrying Forest Grove RD over SR 0079 Nb-Sb in Allegheny County, Pennsylvania. It was built in 2009, so it is 16 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 5,693 vehicles a day, roughly 2% of them trucks, projected to reach 6,876 by 2032. The structure is 556 ft (169.5 m) long and 39 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesForest Grove RD
CrossesSR 0079 Nb-Sb
LocationM0008 Moon Run No. 8
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.48034, -80.12091
Functional classUrban Minor Arterial

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.
Substructure8 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length556 ft (169.5 m)
Longest span147 ft (44.8 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,693 (2024)
Projected traffic6,876 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Grove RD over SR 0079 Nb-Sb built?

It was built in 2009, making it 16 years old in 2025.

What condition is Forest Grove RD 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 May 2023.

How much traffic does Forest Grove RD over SR 0079 Nb-Sb carry?

About 5,693 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Forest Grove RD over SR 0079 Nb-Sb?

The structure is 556 ft (169.5 m) long with a longest span of 147 ft (44.8 m) and a deck 39 ft wide.

Who owns Forest Grove RD over SR 0079 Nb-Sb?

It is owned by the State Highway Agency.