18th Street over Penn Ctr Undrgrnd St Sys


+39.95333, -75.17000
39°57'12" N, 75°10'12" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:18th Street over Penn Ctr Undrgrnd St Sys
Structure number:000000000039113
Old structure number:677301001801050 (from 1992 edition)
Location:N of Market Street 28E12
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Collector (Urban) [17]
Length of largest span:49.9 ft. [15.2 m]
Total length:49.9 ft. [15.2 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:49.9 ft. [15.2 m]
Vertical clearance below bridge:14.1 ft. [4.3 m]
Owner:City or Municipal Highway Agency [04]
Year built:1957
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Girder and floorbeam system [03]
Deck type:Not applicable [N]
Wearing surface:Bituminous [6]

Latest Available Inspection: February 2015 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:11,000 [as of 1985]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:73.8 tons [67.1 metric tons]
Inventory rating:29.9 tons [27.2 metric tons]
Sufficiency rating:72.4
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,000

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
February 201572.4Fair-SatisfactoryGoodFO11000
February 201372.4Fair-SatisfactoryGoodFO11000
February 201172.4Fair-SatisfactoryGoodFO11000
February 200972.4Fair-SatisfactoryGoodFO11000
March 200772.4Fair-SatisfactoryGoodFO11000
February 20073.4Fair-SatisfactoryGoodFO11000
February 200571.4Fair-SatisfactoryGoodFO11000
February 200371.4Fair-SatisfactoryGoodFO11000
February 200171.4Fair-SatisfactoryGoodFO11000
February 199971.4Fair-SatisfactoryGoodFO11000
February 199771.4Fair-SatisfactoryGoodFO11000
February 199571.7Fair-SatisfactoryGoodFO11000
February 199371.7Fair-SatisfactorySatisfactoryFO11000
February 199195.1Fair-SatisfactorySatisfactoryFO11000