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SR 520 RAMP over PORTAGE BAY

Map 

Coordinates:
+47.64324, -122.30959
47°38'36" N, 122°18'35" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:SR 520 RAMP over PORTAGE BAY
Structure number:0006819B0000000
Location:0.8 E JCT I-5
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:75.1 ft. [22.9 m]
Total length:375.0 ft. [114.3 m]
Roadway width between curbs:18.0 ft. [5.5 m]
Deck width edge-to-edge:22.6 ft. [6.9 m]
Owner:State Highway Agency [01]
Year built:1963
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:5
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:11,196 [as of 2012]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 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 desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:56.4 tons [51.3 metric tons]
Inventory rating:32.7 tons [29.7 metric tons]
Sufficiency rating:95.5

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201695.5FairSatisfactoryGoodGood-11196
June 201495.5FairSatisfactoryGoodGood-11196
July 201295.5FairSatisfactoryGoodGood-11329
August 201093.5FairSatisfactoryGoodGood-10864
September 200893.5FairSatisfactoryGoodGood-10864
August 200693.4FairSatisfactoryGoodGood-11866
July 200493.4FairSatisfactoryGoodGood-11866
October 200293.4FairSatisfactoryGoodGood-11866
December 200093.4FairSatisfactoryGoodGood-11866
September 199892.4FairSatisfactoryGoodGood-11866
May 199684.2FairSatisfactoryGoodGood-11866
December 199484.2FairSatisfactoryGoodGood-11866
March 199294.2FairSatisfactoryGoodGood-9800