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:WEST 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 

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. ratingEvaluationDeckSuper.Sub.ADT
May 201582.0Not deficientGoodSatisfactoryGood3400
October 201382.0Not deficientGoodSatisfactoryGood3400
September 201182.0Not deficientVery GoodSatisfactoryGood3400
October 200982.0Not deficientVery GoodVery GoodGood3400
October 200782.0Not deficientVery GoodVery GoodGood3400
October 200582.0Not deficientVery GoodVery GoodGood3400
October 200382.0Not deficientVery GoodVery GoodGood3400
October 200182.0Not deficientVery GoodVery GoodGood3400
October 199982.0Not deficientVery GoodVery GoodGood3400
October 199782.0Not deficientVery GoodVery GoodGood3400
October 199582.8Not deficientVery GoodVery GoodGood3400
October 199382.8Not deficientVery GoodVery GoodGood3400
October 199182.8Not deficientExcellentExcellentExcellent3400