US Bridges

SR 0279 NB SB over Suffolk St.

Fair

Allegheny County, Pennsylvania · I-279 over Suffolk St. · Structure no. 000000000001056

Built
1987
38 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
130 ft
1 main span
Daily traffic
88,452
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0279 NB SB over Suffolk St. is a steel stringer/multi-beam or girder carrying SR 0279 NB SB over Suffolk St. in Allegheny County, Pennsylvania. It was built in 1987, so it is 38 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 88,452 vehicles a day, roughly 4% of them trucks, projected to reach 62,751 by 2032. The structure is 130 ft (39.6 m) long and 156 ft wide.

Location

Open in Google Maps
CarriesSR 0279 NB SB
CrossesSuffolk St.
LocationI-279 over Suffolk St.
RouteInterstate 279
CountyAllegheny County
StatePennsylvania
Coordinates40.4689, -80.00219
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span120 ft (36.6 m)
Deck width156 ft (47.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,452 (2024)
Projected traffic62,751 by 2032
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 SR 0279 NB SB over Suffolk St. built?

It was built in 1987, making it 38 years old in 2025.

What condition is SR 0279 NB SB over Suffolk St. 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 April 2024.

How much traffic does SR 0279 NB SB over Suffolk St. carry?

About 88,452 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 0279 NB SB over Suffolk St.?

The structure is 130 ft (39.6 m) long with a longest span of 120 ft (36.6 m) and a deck 156 ft wide.

Who owns SR 0279 NB SB over Suffolk St.?

It is owned by the State Highway Agency.