I 580 RAMP over SR647 4TH ST, SPRR


+39.53306, -119.78694
39°31'59" N, 119°47'13" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 580 RAMP over SR647 4TH ST, SPRR
Structure number:G1233R
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:95.1 ft. [29.0 m]
Total length:460.0 ft. [140.2 m]
Roadway width between curbs:39.4 ft. [12.0 m]
Deck width edge-to-edge:43.3 ft. [13.2 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:1971
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:6
Main spans material:Steel continuous [4]
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

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:22,000 [as of 2014]
Truck traffic:4% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:50.9 tons [46.3 metric tons]
Inventory rating:30.6 tons [27.8 metric tons]
Sufficiency rating:80.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,786,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201680.5FairSatisfactoryFairGoodFO22000
May 201478.5FairSatisfactoryFairGoodFO22000
May 201278.5FairSatisfactoryFairGoodFO22000
June 201075.2FairSatisfactoryFairGoodFO22000
June 200886.5FairSatisfactorySatisfactoryGoodFO22000
June 200688.3FairSatisfactorySatisfactoryGoodFO37900
June 200487.9FairSatisfactorySatisfactoryGoodFO41400
June 200387.7FairGoodSatisfactoryGoodFO43300
December 200263.0PoorGoodPoorGoodSD13500
May 200263.0PoorGoodPoorGoodSD13500
December 200063.0PoorGoodPoorGoodSD13500
December 199959.4PoorGoodPoorGoodSD37900
June 199859.4PoorGoodPoorGoodSD37900
June 199688.8GoodGoodVery GoodGoodFO32615
May 199490.5GoodGoodVery GoodGoodFO31865
May 199291.0GoodGoodVery GoodGoodFO25500
July 199092.0GoodGoodVery GoodVery GoodFO25500