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SEATTLE BLVD over ST TUNNEL

Map

Coordinates:
+47.59611, -122.32833
47°35'46" N, 122°19'42" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SEATTLE BLVD over ST TUNNEL
Structure number:085041000000000
Location:Seattle Blvd EO 4th Ave S
Purpose:Carries highway and pedestrian walkway over railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:75.1 ft. [22.9 m]
Total length:287.1 ft. [87.5 m]
Roadway width between curbs:67.9 ft. [20.7 m]
Deck width edge-to-edge:101.1 ft. [30.8 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:37°
Owner:City or Municipal Highway Agency [04]
Year built:1910
Year reconstructed:1981
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:21,700 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:65.9
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$1,898,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairSatisfactorySatisfactorySatisfactory2170065.9
August 2015FairGoodSatisfactorySatisfactory534754.5
August 2013FairGoodSatisfactorySatisfactory534754.5
December 2012FairGoodSatisfactorySatisfactory2583550.5
December 2011FairGoodSatisfactorySatisfactory2583550.5
November 2009FairGoodSatisfactorySatisfactory2583550.5
September 2008FairGoodSatisfactorySatisfactory2340050.9
September 2006FairGoodSatisfactorySatisfactory2340074.0
August 2005FairGoodSatisfactorySatisfactory2340074.0
April 2003FairGoodSatisfactorySatisfactory2000074.4
July 2002FairGoodSatisfactorySatisfactory2000078.6
July 2000FairGoodSatisfactorySatisfactory2000078.6
July 1999FairGoodSatisfactoryGood2000078.6
September 1998FairGoodSatisfactoryGood2000078.6
August 1997FairGoodSatisfactoryGood1890078.7
June 1995FairGoodSatisfactoryGood1890079.2
July 1991FairGoodSatisfactoryGood1890079.2

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.5304900400
Steel Protective Coatingsq. ft.5,1384,95801791
Reinforced Concrete Stringerlinear ft.3,1023,102000
Deck
Reinforced Concrete Decksq. ft.19,51618,9161000500
Wearing Surfacessq. ft.19,516019,51600
Superstructure
Steel Floor Beamlinear ft.6,6866,686000
Steel Protective Coatingsq. ft.64,82162,55102,2700
Reinforced Concrete Floor Beamlinear ft.2,0332,033000
Substructure
Reinforced Concrete Columneach3939000
Reinforced Concrete Abutmentlinear ft.210210000
Reinforced Concrete Pier Caplinear ft.8298090200
Joints
Compression Jointlinear ft.1620102060
Bearings
Elastomeric Bearingeach1414000
Movable Bearingeach1818000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.182182000