US Bridges

Mount Nebo RD over SR 0079 NB SB

Fair

Allegheny County, Pennsylvania · Mt Nebo Interchange · Structure no. 000000000001962

Built
1971
54 years old, rebuilt 2008
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
286 ft
4 main spans
Daily traffic
11,928
2024 count
Owner
State
State Highway Agency

About this bridge

Mount Nebo RD over SR 0079 NB SB is a prestressed concrete stringer/multi-beam or girder carrying Mount Nebo RD over SR 0079 NB SB in Allegheny County, Pennsylvania. It was built in 1971 and reconstructed in 2008, so it is 54 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,928 vehicles a day, roughly 4% of them trucks, projected to reach 15,117 by 2032. The structure is 286 ft (87.2 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMount Nebo RD
CrossesSR 0079 NB SB
LocationMt Nebo Interchange
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.55253, -80.11748
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating12 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length286 ft (87.2 m)
Longest span93 ft (28.3 m)
Deck width37 ft (11.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,928 (2024)
Projected traffic15,117 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$825,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mount Nebo RD over SR 0079 NB SB built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2008.

What condition is Mount Nebo RD over SR 0079 NB SB in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Mount Nebo RD over SR 0079 NB SB carry?

About 11,928 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Mount Nebo RD over SR 0079 NB SB?

The structure is 286 ft (87.2 m) long with a longest span of 93 ft (28.3 m) and a deck 37 ft wide.

Who owns Mount Nebo RD over SR 0079 NB SB?

It is owned by the State Highway Agency.