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NE 47TH AVE over B-93 X COLUMBIA SLOUGH

Map 

Coordinates:
+45.57475, -122.61402
45°34'29" N, 122°36'50" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:NE 47TH AVE over B-93 X COLUMBIA SLOUGH
Structure number:51C07A000 00001
Location:00.2 MI N OF COL BLVD
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:52.2 ft. [15.9 m]
Total length:55.1 ft. [16.8 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:45.3 ft. [13.8 m]
Skew angle:20°
Owner:City or Municipal Highway Agency [04]
Year built:1991
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Main span material:Prestressed concrete [5]
Main span design:Slab [01]
Deck type:Concrete Precast Panels [2]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2014 

Status:Open, no restriction [A]
Average daily traffic:4,781 [as of 2010]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
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:Equal to present minimum criteria [6]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Operating rating:79.9 tons [72.6 metric tons]
Inventory rating:47.9 tons [43.5 metric tons]
Sufficiency rating:94.9

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201494.9Not deficientGoodGoodGood4781
July 201289.8Not deficientGoodGoodGood4781
August 201089.8Not deficientGoodGoodGood4781
November 200889.8Not deficientGoodGoodGood4781
September 200689.8Not deficientGoodGoodGood4596
October 200491.8Not deficientVery GoodVery GoodGood4596
September 200291.9Not deficientVery GoodVery GoodGood4462
August 200091.9Not deficientVery GoodVery GoodVery Good4250
January 199991.9Not deficientExcellentExcellentVery Good4250
February 199791.8Not deficientExcellentExcellentExcellent4650
March 199591.9Not deficientExcellentExcellentExcellent4650
April 199391.9Not deficientExcellentExcellentVery Good4650
May 199191.0Not deficientExcellentExcellentGood4100