Northwestern Ave over Wissahickon Creek


+40.08883, -75.22771
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 2015

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]
Inventory rating:74.8 tons [68.0 metric tons]
Sufficiency rating:82.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201582.0FairGoodSatisfactoryGood-3400
October 201382.0FairGoodSatisfactoryGood-3400
September 201182.0FairVery GoodSatisfactoryGood-3400
October 200982.0GoodVery GoodVery GoodGood-3400
October 200782.0GoodVery GoodVery GoodGood-3400
October 200582.0GoodVery GoodVery GoodGood-3400
October 200382.0GoodVery GoodVery GoodGood-3400
October 200182.0GoodVery GoodVery GoodGood-3400
October 199982.0GoodVery GoodVery GoodGood-3400
October 199782.0GoodVery GoodVery GoodGood-3400
October 199582.8GoodVery GoodVery GoodGood-3400
October 199382.8GoodVery GoodVery GoodGood-3400
October 199182.8GoodExcellentExcellentExcellent-3400