US Bridges

Liberty Way over Wylies Run

Fair

Allegheny County, Pennsylvania · WY08 Wylies Run No. 8 · Structure no. 000000000002612

Built
1930
95 years old, rebuilt 1979
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
21 ft
1 main span
Daily traffic
1,227
2004 count
Owner
County
County Highway Agency

About this bridge

Liberty Way over Wylies Run is a prestressed concrete slab carrying Liberty Way over Wylies Run in Allegheny County, Pennsylvania. It was built in 1930 and reconstructed in 1979, so it is 95 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 1,227 vehicles a day, roughly 5% of them trucks, projected to reach 1,300 by 2026. The structure is 21 ft (6.4 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLiberty Way
CrossesWylies Run
LocationWY08 Wylies Run No. 8
RouteCounty Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.28479, -79.84411
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,227 (2004)
Projected traffic1,300 by 2026
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$54,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Liberty Way over Wylies Run built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1979.

What condition is Liberty Way over Wylies Run 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 October 2024.

How much traffic does Liberty Way over Wylies Run carry?

About 1,227 vehicles per day (2004 count), of which roughly 5% are trucks.

How long is Liberty Way over Wylies Run?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Liberty Way over Wylies Run?

It is owned by the County Highway Agency.