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RAMP TO EB SR 520 over ARBORETUM & UNION BAY

Map

Coordinates:
+47.64328, -122.29452
47°38'36" N, 122°17'40" 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 2016

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]
Operating rating:77.2 tons [70.2 metric tons]
Inventory rating:62.4 tons [56.7 metric tons]
Sufficiency rating:98.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201698.7FairSatisfactorySatisfactoryGood-3084
June 201497.7FairSatisfactorySatisfactoryGood-3084
July 201297.5FairSatisfactorySatisfactoryGood-4810
August 201095.5FairSatisfactorySatisfactoryGood-4854
July 200895.5FairSatisfactorySatisfactoryGood-4854
December 200695.5FairSatisfactorySatisfactoryGood-5105
November 200495.5FairSatisfactorySatisfactoryGood-5105
October 200296.5FairSatisfactorySatisfactoryGood-5105
December 200059.5FairSatisfactorySatisfactoryGoodFO5105
September 199859.5FairSatisfactorySatisfactoryGoodFO5105
June 199696.6FairSatisfactorySatisfactoryGood-5105
December 199496.6FairSatisfactorySatisfactoryGood-5105
April 199296.8FairSatisfactoryGoodGood-2980

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.6,7196,61010090
Deck
Reinforced Concrete Decksq. ft.30,68130,675006
Wearing Surfacessq. ft.4,07404,07301
Substructure
Reinforced Concrete Columneach1212000
Reinforced Concrete Pileeach2525000
Reinforced Concrete Pier Caplinear ft.314314000
Joints
Pourable Jointlinear ft.369036900
Bearings
Elastomeric Bearingeach136136000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2,9222,913090
Reinforced Concrete Bridge Raillinear ft.2,9222,922000