US Bridges

North Av over Girtys Run

Fair

Allegheny County, Pennsylvania · 445001 at Babcock Blvd · Structure no. 000000000002615

Built
1931
94 years old
Condition
Fair
inspected April 2023
Type
Arch - Deck
Concrete
Length
52 ft
1 main span
Daily traffic
2,500
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Av over Girtys Run is a concrete arch - deck carrying North Av over Girtys Run in Allegheny County, Pennsylvania. It was built in 1931, so it is 94 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 2,500 vehicles a day, roughly 6% of them trucks, projected to reach 2,500 by 2025. The structure is 52 ft (15.8 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorth Av
CrossesGirtys Run
Location445001 at Babcock Blvd
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.493, -79.9751
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
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span40 ft (12.2 m)
Deck width60 ft (18.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2005)
Projected traffic2,500 by 2025
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$47,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Av over Girtys Run built?

It was built in 1931, making it 94 years old in 2025.

What condition is North Av over Girtys 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 April 2023.

How much traffic does North Av over Girtys Run carry?

About 2,500 vehicles per day (2005 count), of which roughly 6% are trucks.

How long is North Av over Girtys Run?

The structure is 52 ft (15.8 m) long with a longest span of 40 ft (12.2 m) and a deck 60 ft wide.

Who owns North Av over Girtys Run?

It is owned by the City or Municipal Highway Agency.