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SR 520 RAMP over PORTAGE BAY

Map

Coordinates:
+47.64324, -122.30959
47°38'36" N, 122°18'35" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
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

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.1,1251,125000
Deck
Reinforced Concrete Decksq. ft.6,7506,747300
Wearing Surfacessq. ft.1,72801,693035
Substructure
Reinforced Concrete Columneach44000
Reinforced Concrete Abutmentlinear ft.2828000
Prestressed Concrete Pileeach66000
Reinforced Concrete Pier Caplinear ft.9292000
Joints
Pourable Jointlinear ft.7207200
Open Jointlinear ft.36018018
Bearings
Movable Bearingeach1515000
Fixed Bearingeach1515000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.750750000
Reinforced Concrete Bridge Raillinear ft.750750000