US Bridges

6th St&allegheny a over Conrail-Richmond Branch

Fair

Philadelphia County, Pennsylvania · Allegheny AVE;6th 3590H1 · Structure no. 000000000038833

Built
1925
100 years old
Condition
Fair
inspected June 2024
Type
Girder and Floorbeam System
Steel
Length
68 ft
1 main span
Daily traffic
18,604
2024 count
Owner
State
State Highway Agency

About this bridge

6th St&allegheny a over Conrail-Richmond Branch is a steel girder and floorbeam system carrying 6th St&allegheny a over Conrail-Richmond Branch in Philadelphia County, Pennsylvania. It was built in 1925, so it is 100 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 18,604 vehicles a day, roughly 4% of them trucks, projected to reach 15,397 by 2032. The structure is 68 ft (20.7 m) long and 231 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries6th St&allegheny a
CrossesConrail-Richmond Branch
LocationAllegheny AVE;6th 3590H1
RouteState Highway 0
CountyPhiladelphia County
StatePennsylvania
Coordinates40.0002, -75.14052
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length68 ft (20.7 m)
Longest span64 ft (19.5 m)
Deck width231 ft (70.4 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,604 (2024)
Projected traffic15,397 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 6th St&allegheny a over Conrail-Richmond Branch built?

It was built in 1925, making it 100 years old in 2025.

What condition is 6th St&allegheny a over Conrail-Richmond Branch 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 June 2024.

How much traffic does 6th St&allegheny a over Conrail-Richmond Branch carry?

About 18,604 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is 6th St&allegheny a over Conrail-Richmond Branch?

The structure is 68 ft (20.7 m) long with a longest span of 64 ft (19.5 m) and a deck 231 ft wide.

Who owns 6th St&allegheny a over Conrail-Richmond Branch?

It is owned by the State Highway Agency.