US Bridges

Steen RD over SR 0079 NB SB

Good

Allegheny County, Pennsylvania · Steen RD over I-79 · Structure no. 000000000043100

Built
2005
20 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
287 ft
4 main spans
Daily traffic
2,082
2024 count
Owner
State
State Highway Agency

About this bridge

Steen RD over SR 0079 NB SB is a prestressed concrete continuous box beam or girders - multiple carrying Steen RD over SR 0079 NB SB in Allegheny County, Pennsylvania. It was built in 2005, so it is 20 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 2,082 vehicles a day, roughly 13% of them trucks, projected to reach 5,266 by 2032. The structure is 287 ft (87.5 m) long and 40 ft wide.

CarriesSteen RD
CrossesSR 0079 NB SB
LocationSteen RD over I-79
RouteState Highway 0
Coordinates40.37702, -80.1007
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.2 US tons
Inventory rating42.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+1 approach)
Design loadHL 93
Structure length287 ft (87.5 m)
Longest span99 ft (30.2 m)
Deck width40 ft (12.1 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,082 (2024)
Projected traffic5,266 by 2032
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Steen RD over SR 0079 NB SB built?

It was built in 2005, making it 20 years old in 2025.

What condition is Steen 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 December 2023.

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

About 2,082 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Steen RD over SR 0079 NB SB?

The structure is 287 ft (87.5 m) long with a longest span of 99 ft (30.2 m) and a deck 40 ft wide.

Who owns Steen RD over SR 0079 NB SB?

It is owned by the State Highway Agency.