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RAMP TO EB SR 520 over ARBORETUM & UNION BAY

Map

Coordinates:
+47.64338, -122.29429
47°38'36" N, 122°17'39" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:RAMP TO EB SR 520 over ARBORETUM & UNION BAY
Structure number:0006872H0000000
Location:0.5 E JCT SR 513
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:100.1 ft. [30.5 m]
Total length:1461.0 ft. [445.3 m]
Roadway width between curbs:21.0 ft. [6.4 m]
Deck width edge-to-edge:25.6 ft. [7.8 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:15
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:3,084 [as of 2012]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:97.7
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$14,026,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairSatisfactorySatisfactoryGood308497.7
April 2016FairSatisfactorySatisfactoryGood308498.7
June 2014FairSatisfactorySatisfactoryGood308497.7
July 2012FairSatisfactorySatisfactoryGood481097.5
August 2010FairSatisfactorySatisfactoryGood485495.5
July 2008FairSatisfactorySatisfactoryGood485495.5
December 2006FairSatisfactorySatisfactoryGood510595.5
November 2004FairSatisfactorySatisfactoryGood510595.5
October 2002FairSatisfactorySatisfactoryGood510596.5
December 2000FairSatisfactorySatisfactoryGood510559.5
September 1998FairSatisfactorySatisfactoryGood510559.5
June 1996FairSatisfactorySatisfactoryGood510596.6
December 1994FairSatisfactorySatisfactoryGood510596.6
April 1992FairSatisfactoryGoodGood298096.8

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.6,7196,607100120
Deck
Reinforced Concrete Decksq. ft.30,68130,675006
Wearing Surfacessq. ft.4,07404,07400
Substructure
Prestressed Concrete Columneach1212000
Prestressed Concrete Pileeach2525000
Reinforced Concrete Pier Caplinear ft.314314000
Joints
Pourable Jointlinear ft.369036900
Bearings
Elastomeric Bearingeach136136000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2,9222,9060160
Reinforced Concrete Bridge Raillinear ft.2,9222,922000