US Bridges

Blvd of the Allies over 02270 Pat 2nd Av Ross ST

Fair

Allegheny County, Pennsylvania · Liberty Bridge · Structure no. 000000000001687

Built
1921
104 years old, rebuilt 2018
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
1,129 ft
25 main spans
Daily traffic
5,081
2024 count
Owner
State
State Highway Agency

About this bridge

Blvd of the Allies over 02270 Pat 2nd Av Ross ST is a steel stringer/multi-beam or girder carrying Blvd of the Allies over 02270 Pat 2nd Av Ross ST in Allegheny County, Pennsylvania. It was built in 1921 and reconstructed in 2018, so it is 104 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 5,081 vehicles a day, roughly 2% of them trucks, projected to reach 16,956 by 2032. The structure is 1,129 ft (344.1 m) long and 54 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBlvd of the Allies
Crosses02270 Pat 2nd Av Ross ST
LocationLiberty Bridge
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.43597, -79.99525
Functional classUrban Other Principal 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.
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans25 (+1 approach)
Design loadHS 20
Structure length1,129 ft (344.1 m)
Longest span77 ft (23.5 m)
Deck width54 ft (16.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic5,081 (2024)
Projected traffic16,956 by 2032
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Blvd of the Allies over 02270 Pat 2nd Av Ross ST built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 2018.

What condition is Blvd of the Allies over 02270 Pat 2nd Av Ross 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 July 2024.

How much traffic does Blvd of the Allies over 02270 Pat 2nd Av Ross ST carry?

About 5,081 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Blvd of the Allies over 02270 Pat 2nd Av Ross ST?

The structure is 1,129 ft (344.1 m) long with a longest span of 77 ft (23.5 m) and a deck 54 ft wide.

Who owns Blvd of the Allies over 02270 Pat 2nd Av Ross ST?

It is owned by the State Highway Agency.