INTERSTATE 280-680 over U.S. HIGHWAY 101


+37.34000, -121.85167
37°20'24" N, 121°51'06" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:INTERSTATE 280-680 over U.S. HIGHWAY 101
Structure number:37 0285R
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:107.9 ft. [32.9 m]
Total length:272.0 ft. [82.9 m]
Roadway width between curbs:65.9 ft. [20.1 m]
Deck width edge-to-edge:67.9 ft. [20.7 m]
Vertical clearance above deck:17.1 ft. [5.2 m]
Vertical clearance below bridge:16.4 ft. [5.0 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+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: July 2015 

Status:Open, no restriction [A]
Average daily traffic:80,000 [as of 2009]
Truck traffic:2% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Equal to present minimum criteria [6]
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:100.1 tons [91.0 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:98.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201598.0Not deficientVery GoodVery GoodVery Good80000
July 201398.0Not deficientGoodVery GoodGood80000
July 201198.0Not deficientGoodVery GoodGood80000
July 200999.0Not deficientFairVery GoodGood93500
July 2007100.0Not deficientSatisfactoryVery GoodGood93500
August 2005100.0Not deficientSatisfactoryVery GoodGood93500
July 2003100.0Not deficientGoodVery GoodGood93500
July 200198.0Not deficientGoodVery GoodGood89500
May 199998.0Not deficientGoodVery GoodGood89500
August 199598.0Not deficientGoodGoodGood87800
July 199398.0Not deficientGoodGoodGood62050
February 199198.0Not deficientGoodGoodGood62050