+37.31222, -121.88472
37°18'44" N, 121°53'05" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:NB STATE ROUTE 87 over NB87,SB280,NB680 ON-RAMP
Structure number:37 0421R
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:77.1 ft. [23.5 m]
Total length:186.0 ft. [56.7 m]
Roadway width between curbs:53.2 ft. [16.2 m]
Deck width edge-to-edge:56.8 ft. [17.3 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Skew angle:43°
Owner:State Highway Agency [01]
Year built:1990
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:3
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 2015 

Status:Open, no restriction [A]
Average daily traffic:65,000 [as of 2009]
Truck traffic:3% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:59.5 tons [54.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:93.9

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201593.9Not deficientVery GoodVery GoodGood65000
April 201393.9Not deficientGoodVery GoodGood65000
April 201192.4Not deficientPoorVery GoodGood47500
April 200992.4Not deficientPoorVery GoodGood47500
July 200790.3Structurally deficientSeriousVery GoodGood47500
June 200590.3Structurally deficientSeriousVery GoodGood47500
January 200490.3Structurally deficientSeriousVery GoodGood47500
January 200290.9Structurally deficientPoorVery GoodGood52400
October 199994.1Not deficientSatisfactoryVery GoodGood52400
June 199893.0Not deficientGoodVery GoodGood52400
October 199698.5Not deficientGoodVery GoodGood5000
May 199399.0Not deficientGoodGoodVery Good-