US Bridges

SR 0028 NB over Lr 679-SR 910

Fair

Allegheny County, Pennsylvania · Harmarville Interchange · Structure no. 000000000000634

Built
1970
55 years old, rebuilt 2008
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
190 ft
1 main span
Daily traffic
25,171
2024 count
Owner
State
State Highway Agency

About this bridge

SR 0028 NB over Lr 679-SR 910 is a steel stringer/multi-beam or girder carrying SR 0028 NB over Lr 679-SR 910 in Allegheny County, Pennsylvania. It was built in 1970 and reconstructed in 2008, so it is 55 years old, older 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 5 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 25,171 vehicles a day, roughly 5% of them trucks, projected to reach 14,932 by 2032. The structure is 190 ft (57.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 0028 NB
CrossesLr 679-SR 910
LocationHarmarville Interchange
RouteState Highway 28
CountyAllegheny County
StatePennsylvania
Coordinates40.54031, -79.84074
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span110 ft (33.5 m)
Deck width43 ft (13.2 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,171 (2024)
Projected traffic14,932 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 0028 NB over Lr 679-SR 910 built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2008.

What condition is SR 0028 NB over Lr 679-SR 910 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 0028 NB over Lr 679-SR 910 carry?

About 25,171 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is SR 0028 NB over Lr 679-SR 910?

The structure is 190 ft (57.9 m) long with a longest span of 110 ft (33.5 m) and a deck 43 ft wide.

Who owns SR 0028 NB over Lr 679-SR 910?

It is owned by the State Highway Agency.