Share:

SR 520 RAMP over PORTAGE BAY

Map 

Coordinates:
+47.64324, -122.30959
47°38'36" N, 122°18'35" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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 

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. ratingEvaluationDeckSuper.Sub.ADT
April 201695.5Not deficientSatisfactoryGoodGood11196
June 201495.5Not deficientSatisfactoryGoodGood11196
July 201295.5Not deficientSatisfactoryGoodGood11329
August 201093.5Not deficientSatisfactoryGoodGood10864
September 200893.5Not deficientSatisfactoryGoodGood10864
August 200693.4Not deficientSatisfactoryGoodGood11866
July 200493.4Not deficientSatisfactoryGoodGood11866
October 200293.4Not deficientSatisfactoryGoodGood11866
December 200093.4Not deficientSatisfactoryGoodGood11866
September 199892.4Not deficientSatisfactoryGoodGood11866
May 199684.2Not deficientSatisfactoryGoodGood11866
December 199484.2Not deficientSatisfactoryGoodGood11866
March 199294.2Not deficientSatisfactoryGoodGood9800