US Bridges

18th Street over Abandoned Conrail

Fair

Philadelphia County, Pennsylvania · N.Callowhill St. 28F10 · Structure no. 000000000039112

Built
1898
127 years old, rebuilt 1974
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
2 main spans
Daily traffic
3,300
1980 count
Owner
City
City or Municipal Highway Agency

About this bridge

18th Street over Abandoned Conrail is a steel stringer/multi-beam or girder carrying 18th Street over Abandoned Conrail in Philadelphia County, Pennsylvania. It was built in 1898 and reconstructed in 1974, so it is 127 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 3,300 vehicles a day, projected to reach 3,300 by 1977. The structure is 86 ft (26.2 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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Carries18th Street
CrossesAbandoned Conrail
LocationN.Callowhill St. 28F10
RouteCity Street 0
CountyPhiladelphia County
StatePennsylvania
Coordinates39.96113, -75.16829
Functional classUrban Local

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.
Last inspectionJanuary 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span67 ft (20.4 m)
Deck width50 ft (15.3 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (1980)
Projected traffic3,300 by 1977
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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$473,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 18th Street over Abandoned Conrail built?

It was built in 1898, making it 127 years old in 2025. It was reconstructed in 1974.

What condition is 18th Street over Abandoned Conrail 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 January 2023.

How much traffic does 18th Street over Abandoned Conrail carry?

About 3,300 vehicles per day (1980 count).

How long is 18th Street over Abandoned Conrail?

The structure is 86 ft (26.2 m) long with a longest span of 67 ft (20.4 m) and a deck 50 ft wide.

Who owns 18th Street over Abandoned Conrail?

It is owned by the City or Municipal Highway Agency.