Northwestern Ave over Wissahickon Creek


+40.08880, -75.22770
40°05'20" N, 75°13'40" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Northwestern Ave over Wissahickon Creek
Structure number:000000000039250
Old structure number:677301023000330 (from 1992 edition)
Location:W of Stenton Ave 06G13
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:109.9 ft. [33.5 m]
Total length:111.9 ft. [34.1 m]
Roadway width between curbs:30.2 ft. [9.2 m]
Deck width edge-to-edge:43.6 ft. [13.3 m]
Owner:City or Municipal Highway Agency [04]
Year built:1888
Year reconstructed:1988
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:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:3,400 [as of 1974]
Deck condition:Good [7 out of 9]
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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Better than present minimum criteria [7]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Sufficiency rating:82.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairGoodSatisfactoryGood340082.0
May 2015FairGoodSatisfactoryGood340082.0
October 2013FairGoodSatisfactoryGood340082.0
September 2011FairVery GoodSatisfactoryGood340082.0
October 2009GoodVery GoodVery GoodGood340082.0
October 2007GoodVery GoodVery GoodGood340082.0
October 2005GoodVery GoodVery GoodGood340082.0
October 2003GoodVery GoodVery GoodGood340082.0
October 2001GoodVery GoodVery GoodGood340082.0
October 1999GoodVery GoodVery GoodGood340082.0
October 1997GoodVery GoodVery GoodGood340082.0
October 1995GoodVery GoodVery GoodGood340082.8
October 1993GoodVery GoodVery GoodGood340082.8
October 1991GoodExcellentExcellentExcellent340082.8