US Bridges

Alpha DR over SR 0028 NB SB

Fair

Allegheny County, Pennsylvania · Twp.Rd 503 over SR 0028 · Structure no. 000000000000624

Built
1970
55 years old, rebuilt 2015
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
250 ft
4 main spans
Daily traffic
2,672
2024 count
Owner
State
State Highway Agency

About this bridge

Alpha DR over SR 0028 NB SB is a prestressed concrete stringer/multi-beam or girder carrying Alpha DR over SR 0028 NB SB in Allegheny County, Pennsylvania. It was built in 1970 and reconstructed in 2015, 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 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 2,672 vehicles a day, roughly 10% of them trucks, projected to reach 2,716 by 2032. The structure is 250 ft (76.2 m) long and 53 ft wide.

Location

Open in Google Maps
CarriesAlpha DR
CrossesSR 0028 NB SB
LocationTwp.Rd 503 over SR 0028
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.49167, -79.875
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating13 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length250 ft (76.2 m)
Longest span78 ft (23.8 m)
Deck width53 ft (16.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,672 (2024)
Projected traffic2,716 by 2032
Trucks10%
Lanes on structure4
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Alpha DR over SR 0028 NB SB built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2015.

What condition is Alpha DR over SR 0028 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 July 2024.

How much traffic does Alpha DR over SR 0028 NB SB carry?

About 2,672 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Alpha DR over SR 0028 NB SB?

The structure is 250 ft (76.2 m) long with a longest span of 78 ft (23.8 m) and a deck 53 ft wide.

Who owns Alpha DR over SR 0028 NB SB?

It is owned by the State Highway Agency.