US Bridges

Grant Avenue over Girtys Run

Fair

Allegheny County, Pennsylvania · Int. Grant Ave E Ohio ST · Structure no. 000000000002626

Built
1914
111 years old, rebuilt 1992
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
4,500
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grant Avenue over Girtys Run is a steel stringer/multi-beam or girder carrying Grant Avenue over Girtys Run in Allegheny County, Pennsylvania. It was built in 1914 and reconstructed in 1992, so it is 111 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 4,500 vehicles a day, roughly 6% of them trucks, projected to reach 4,950 by 2030. The structure is 30 ft (9.1 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesGrant Avenue
CrossesGirtys Run
LocationInt. Grant Ave E Ohio ST
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.47794, -79.9695
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width51 ft (15.4 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2005)
Projected traffic4,950 by 2030
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$105,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grant Avenue over Girtys Run built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1992.

What condition is Grant Avenue 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 Grant Avenue over Girtys Run carry?

About 4,500 vehicles per day (2005 count), of which roughly 6% are trucks.

How long is Grant Avenue over Girtys Run?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 51 ft wide.

Who owns Grant Avenue over Girtys Run?

It is owned by the City or Municipal Highway Agency.