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

Good/Fair/Poor Condition:Good
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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201598.0GoodVery GoodVery GoodVery Good-80000
July 201398.0GoodGoodVery GoodGood-80000
July 201198.0GoodGoodVery GoodGood-80000
July 200999.0FairFairVery GoodGood-93500
July 2007100.0FairSatisfactoryVery GoodGood-93500
August 2005100.0FairSatisfactoryVery GoodGood-93500
July 2003100.0GoodGoodVery GoodGood-93500
July 200198.0GoodGoodVery GoodGood-89500
May 199998.0GoodGoodVery GoodGood-89500
August 199598.0GoodGoodGoodGood-87800
July 199398.0GoodGoodGoodGood-62050
February 199198.0GoodGoodGoodGood-62050

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Prestressed Concrete Closed Web/Box Girderlinear ft.8383000
Reinforced Concrete Top Flangesq. ft.1,7161,716000
Concrete Protective Coatingsq. ft.1,6661,666000
Reinforced Concrete Columneach44000
Reinforced Concrete Abutmentlinear ft.4141000
Reinforced Concrete Pileeach11000
Bridge Rail
Other Material Bridge Raillinear ft.178177100