SR 99 RAMP over 1ST AVE


+47.59622, -122.33423
47°35'46" N, 122°20'03" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:SR 99 RAMP over 1ST AVE
Structure number:0004104A0000000
Location:4.1 N JCT 509
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:55.1 ft. [16.8 m]
Total length:664.1 ft. [202.4 m]
Roadway width between curbs:24.9 ft. [7.6 m]
Deck width edge-to-edge:27.6 ft. [8.4 m]
Vertical clearance below bridge:14.1 ft. [4.3 m]
Owner:State Highway Agency [01]
Year built:1953
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:12
Main spans material:Concrete continuous [2]
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: March 2016 

Good/Fair/Poor Condition:Fair
Status:Posted for other load-capacity restriction [R]
Average daily traffic:29,972 [as of 2013]
Truck traffic:4% 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:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:51.5 tons [46.8 metric tons]
Inventory rating:19.8 tons [18.0 metric tons]
Sufficiency rating:70.4

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201670.4FairSatisfactorySatisfactorySatisfactoryFO29972
March 201474.0FairSatisfactorySatisfactorySatisfactoryFO11148
March 201274.0FairSatisfactorySatisfactorySatisfactoryFO11148
March 201071.1FairSatisfactorySatisfactorySatisfactoryFO10873
March 200871.4FairSatisfactorySatisfactorySatisfactoryFO9122
March 200671.4FairSatisfactorySatisfactorySatisfactoryFO9122
March 200471.4FairSatisfactoryGoodSatisfactoryFO9122
March 200271.4FairSatisfactoryGoodSatisfactoryFO9122
March 200071.4FairSatisfactoryGoodSatisfactoryFO9122
November 199971.4FairSatisfactoryGoodSatisfactoryFO9122
October 199778.9FairSatisfactoryGoodSatisfactoryFO9122
November 199571.3FairSatisfactoryGoodSatisfactoryFO9122
December 199373.2----FO1