18th Street over Penn Ctr Undrgrnd St Sys


+39.95440, -75.16970
39°57'16" N, 75°10'11" 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]
Vertical clearance below bridge:13.1 ft. [4.0 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 2017

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]
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]
Sufficiency rating:91.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,096,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2017Fair-SatisfactoryGood1100091.0
February 2015Fair-SatisfactoryGood1100072.4
February 2013Fair-SatisfactoryGood1100072.4
February 2011Fair-SatisfactoryGood1100072.4
February 2009Fair-SatisfactoryGood1100072.4
March 2007Fair-SatisfactoryGood1100072.4
February 2007Fair-SatisfactoryGood110003.4
February 2005Fair-SatisfactoryGood1100071.4
February 2003Fair-SatisfactoryGood1100071.4
February 2001Fair-SatisfactoryGood1100071.4
February 1999Fair-SatisfactoryGood1100071.4
February 1997Fair-SatisfactoryGood1100071.4
February 1995Fair-SatisfactoryGood1100071.7
February 1993Fair-SatisfactorySatisfactory1100071.7
February 1991Fair-SatisfactorySatisfactory1100095.1