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SR 520 RAMP over PORTAGE BAY

Map

Coordinates:
+47.64356, -122.30466
47°38'37" N, 122°18'17" 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 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:15,795 [as of 2016]
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]
Sufficiency rating:95.2
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,000,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairSatisfactoryGoodGood1579595.2
April 2016FairSatisfactoryGoodGood1119695.5
June 2014FairSatisfactoryGoodGood1119695.5
July 2012FairSatisfactoryGoodGood1132995.5
August 2010FairSatisfactoryGoodGood1086493.5
September 2008FairSatisfactoryGoodGood1086493.5
August 2006FairSatisfactoryGoodGood1186693.4
July 2004FairSatisfactoryGoodGood1186693.4
October 2002FairSatisfactoryGoodGood1186693.4
December 2000FairSatisfactoryGoodGood1186693.4
September 1998FairSatisfactoryGoodGood1186692.4
May 1996FairSatisfactoryGoodGood1186684.2
December 1994FairSatisfactoryGoodGood1186684.2
March 1992FairSatisfactoryGoodGood980094.2

Element Data

Source: National Bridge Elements dataset, 2018 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
Prestressed Concrete Columneach44000
Reinforced Concrete Abutmentlinear ft.2828000
Prestressed Concrete Pileeach66000
Reinforced Concrete Pier Caplinear ft.9292000
Joints
Pourable Jointlinear ft.90072018
Bearings
Movable Bearingeach1515000
Fixed Bearingeach1515000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.750750000
Reinforced Concrete Bridge Raillinear ft.750750000