N405-S55 CONN RAMP over I 405 & S405-N55 CONN


+33.68627, -117.87474
33°41'11" N, 117°52'29" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:N405-S55 CONN RAMP over I 405 & S405-N55 CONN
Structure number:55 0422G
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:111.9 ft. [34.1 m]
Total length:600.1 ft. [182.9 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:34.1 ft. [10.4 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:39°
Owner:State Highway Agency [01]
Year built:1968
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:7
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:25,000 [as of 2009]
Truck traffic:5% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:71.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,178,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017GoodGoodGoodGood2500071.8
August 2015FairSatisfactoryVery GoodVery Good2500071.8
July 2013PoorPoorGoodGood2500068.6
June 2011FairSatisfactoryGoodGood2500071.8
May 2009FairSatisfactoryGoodGood2500071.8
April 2007FairSatisfactoryGoodGood-94.0
June 2004FairSatisfactoryGoodGood-94.0
April 2002FairSatisfactoryGoodGood1870072.6
July 2000GoodGoodGoodGood1870076.7
March 1995GoodGoodGoodGood1870076.7
March 1993GoodVery GoodVery GoodVery Good1830081.3
August 1991GoodVery GoodVery GoodVery Good1830081.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Closed Web/Box Girderlinear ft.1831632000
Reinforced Concrete Top Flangesq. ft.1,8921,8722000
Concrete Protective Coatingsq. ft.1,8921,892000
Reinforced Concrete Abutmentlinear ft.2727000
Reinforced Concrete Pileeach11000
Pourable Jointlinear ft.4334900
Movable Bearingeach1001000
Enclosed/Concealed Bearingeach11000
Bridge Rail
Other Material Bridge Raillinear ft.382382000