US Bridges

16th Street over Penn Ctr Undgrd ST Sys

Fair

Philadelphia County, Pennsylvania · N of Market Street 28F12 · Structure no. 000000000039108

Built
1957
68 years old
Condition
Fair
inspected February 2023
Type
Girder and Floorbeam System
Steel
Length
70 ft
4 main spans
Daily traffic
17,600
1985 count
Owner
City
City or Municipal Highway Agency

About this bridge

16th Street over Penn Ctr Undgrd ST Sys is a steel girder and floorbeam system carrying 16th Street over Penn Ctr Undgrd ST Sys in Philadelphia County, Pennsylvania. It was built in 1957, so it is 68 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 6 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 17,600 vehicles a day, projected to reach 24,640 by 2005. The structure is 70 ft (21.3 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries16th Street
CrossesPenn Ctr Undgrd ST Sys
LocationN of Market Street 28F12
RouteCity Street 0
CountyPhiladelphia County
StatePennsylvania
Coordinates39.95401, -75.16655
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span17 ft (5.2 m)
Deck width70 ft (21.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,600 (1985)
Projected traffic24,640 by 2005
Trucks—
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed1.2 mi (2 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$624,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 16th Street over Penn Ctr Undgrd ST Sys built?

It was built in 1957, making it 68 years old in 2025.

What condition is 16th Street over Penn Ctr Undgrd ST Sys 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 February 2023.

How much traffic does 16th Street over Penn Ctr Undgrd ST Sys carry?

About 17,600 vehicles per day (1985 count).

How long is 16th Street over Penn Ctr Undgrd ST Sys?

The structure is 70 ft (21.3 m) long with a longest span of 17 ft (5.2 m) and a deck 70 ft wide.

Who owns 16th Street over Penn Ctr Undgrd ST Sys?

It is owned by the City or Municipal Highway Agency.