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 

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]
Evaluation:Functionally obsolete [2]
Sufficiency rating:70.4

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
March 201670.4Functionally obsoleteSatisfactorySatisfactorySatisfactory29972
March 201474.0Functionally obsoleteSatisfactorySatisfactorySatisfactory11148
March 201274.0Functionally obsoleteSatisfactorySatisfactorySatisfactory11148
March 201071.1Functionally obsoleteSatisfactorySatisfactorySatisfactory10873
March 200871.4Functionally obsoleteSatisfactorySatisfactorySatisfactory9122
March 200671.4Functionally obsoleteSatisfactorySatisfactorySatisfactory9122
March 200471.4Functionally obsoleteSatisfactoryGoodSatisfactory9122
March 200271.4Functionally obsoleteSatisfactoryGoodSatisfactory9122
March 200071.4Functionally obsoleteSatisfactoryGoodSatisfactory9122
November 199971.4Functionally obsoleteSatisfactoryGoodSatisfactory9122
October 199778.9Functionally obsoleteSatisfactoryGoodSatisfactory9122
November 199571.3Functionally obsoleteSatisfactoryGoodSatisfactory9122
December 199373.2Functionally obsolete---1
199381.2Not deficient---1