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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: July 2014 

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. ratingEvaluationDeckSuper.Sub.ADT
July 201491.6Not deficientVery GoodSatisfactoryVery Good28500
June 201291.6Not deficientGoodGoodGood28500
July 201088.3Structurally deficientPoorGoodGood33750
June 200888.3Structurally deficientPoorGoodGood33750
June 200688.3Structurally deficientPoorGoodGood33750
May 200486.2Structurally deficientSeriousGoodGood33750
October 200277.0Not deficientFairVery GoodGood33750
July 200083.0Not deficientSatisfactoryVery GoodGood31800
November 199883.0Not deficientGoodVery GoodGood31800
June 199679.0Functionally obsoleteSatisfactorySatisfactorySatisfactory25900
June 199479.0Functionally obsoleteVery GoodVery GoodSatisfactory25900
June 199279.0Functionally obsoleteVery GoodVery GoodSatisfactory27800
December 198979.0Functionally obsoleteVery GoodVery GoodVery Good27800