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ALUM ROCK AVE over INTERSTATE 680

Map 

Coordinates:
+37.35833, -121.84000
37°21'30" N, 121°50'24" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:ALUM ROCK AVE over INTERSTATE 680
Structure number:37 0290
Location:04-SCL-680-M1.74-SJS
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:163.7 ft. [49.9 m]
Total length:298.9 ft. [91.1 m]
Roadway width between curbs:75.8 ft. [23.1 m]
Deck width edge-to-edge:102.0 ft. [31.1 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1974
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:2
Main spans material:Prestressed concrete continuous [6]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: April 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:28,500 [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:Superior to present desirable criteria [9]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:96.6 tons [87.8 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:91.6

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201691.6FairVery GoodSatisfactoryVery Good-28500
July 201491.6FairVery GoodSatisfactoryVery Good-28500
June 201291.6GoodGoodGoodGood-28500
July 201088.3PoorPoorGoodGoodSD33750
June 200888.3PoorPoorGoodGoodSD33750
June 200688.3PoorPoorGoodGoodSD33750
May 200486.2PoorSeriousGoodGoodSD33750
October 200277.0FairFairVery GoodGood-33750
July 200083.0FairSatisfactoryVery GoodGood-31800
November 199883.0GoodGoodVery GoodGood-31800
June 199679.0FairSatisfactorySatisfactorySatisfactoryFO25900
June 199479.0FairVery GoodVery GoodSatisfactoryFO25900
June 199279.0FairVery GoodVery GoodSatisfactoryFO27800
December 198979.0GoodVery GoodVery GoodVery GoodFO27800