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

Facts 

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 

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. ratingEvaluationDeckSuper.Sub.ADT
April 201698.7Not deficientSatisfactorySatisfactoryGood3084
June 201497.7Not deficientSatisfactorySatisfactoryGood3084
July 201297.5Not deficientSatisfactorySatisfactoryGood4810
August 201095.5Not deficientSatisfactorySatisfactoryGood4854
July 200895.5Not deficientSatisfactorySatisfactoryGood4854
December 200695.5Not deficientSatisfactorySatisfactoryGood5105
November 200495.5Not deficientSatisfactorySatisfactoryGood5105
October 200296.5Not deficientSatisfactorySatisfactoryGood5105
December 200059.5Functionally obsoleteSatisfactorySatisfactoryGood5105
September 199859.5Functionally obsoleteSatisfactorySatisfactoryGood5105
June 199696.6Not deficientSatisfactorySatisfactoryGood5105
December 199496.6Not deficientSatisfactorySatisfactoryGood5105
April 199296.8Not deficientSatisfactoryGoodGood2980