INTERSTATE 580 over ST RTE 24-I 980


+37.82417, -122.26806
37°49'27" N, 122°16'05" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:INTERSTATE 580 over ST RTE 24-I 980
Structure number:33 0298
Purpose:Carries highway overpass over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:99.1 ft. [30.2 m]
Total length:288.1 ft. [87.8 m]
Roadway width between curbs:122.1 ft. [37.2 m]
Deck width edge-to-edge:127.0 ft. [38.7 m]
Vertical clearance above deck:16.4 ft. [5.0 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1961
Year reconstructed:1969
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:3
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: August 2014 

Status:Open, no restriction [A]
Average daily traffic:174,000 [as of 2009]
Truck traffic:2% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
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]
Operating rating:78.4 tons [71.3 metric tons]
Inventory rating:47.1 tons [42.8 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:73.0
Recommended work:Bridge deck replacement with only incidental widening. [37]
Estimated cost of work:$6,961,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201473.0Functionally obsoleteVery GoodSatisfactoryVery Good174000
September 201273.0Functionally obsoleteGoodGoodGood174000
March 201175.0Functionally obsoleteGoodGoodGood394000
August 200875.0Functionally obsoleteGoodGoodGood205000
August 200675.0Functionally obsoleteGoodSatisfactoryGood205000
December 200475.0Functionally obsoleteGoodSatisfactoryGood205000
October 200276.0Functionally obsoleteGoodSatisfactoryGood197000
October 200071.0Structurally deficientSeriousSatisfactoryGood192500
20000.0Not applicable---125300
October 199871.0Structurally deficientSeriousGoodGood192500
December 199476.0Functionally obsoleteGoodGoodGood283700
March 199376.0Functionally obsoleteGoodGoodGood250000
November 198976.0Functionally obsoleteGoodGoodGood250000