US Bridges

Pa Tpk (I-76) over SR 0030

Fair

Westmoreland County, Pennsylvania · Irwin Interchange · Structure no. 000000000036823

Built
1952
73 years old, rebuilt 1995
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
1 main span
Daily traffic
34,735
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over SR 0030 is a steel stringer/multi-beam or girder carrying Pa Tpk (I-76) over SR 0030 in Westmoreland County, Pennsylvania. It was built in 1952 and reconstructed in 1995, so it is 73 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 34,735 vehicles a day, roughly 20% of them trucks, projected to reach 40,738 by 2030. The structure is 117 ft (35.7 m) long and 86 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesSR 0030
LocationIrwin Interchange
RouteInterstate 76
CountyWestmoreland County
StatePennsylvania
Coordinates40.31542, -79.67821
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span110 ft (33.5 m)
Deck width86 ft (26.1 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,735 (2004)
Projected traffic40,738 by 2030
Trucks20%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over SR 0030 built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1995.

What condition is Pa Tpk (I-76) over SR 0030 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 Pa Tpk (I-76) over SR 0030 carry?

About 34,735 vehicles per day (2004 count), of which roughly 20% are trucks.

How long is Pa Tpk (I-76) over SR 0030?

The structure is 117 ft (35.7 m) long with a longest span of 110 ft (33.5 m) and a deck 86 ft wide.

Who owns Pa Tpk (I-76) over SR 0030?

It is owned by the State Toll Authority.