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


+33.68667, -117.87333
33°41'12" N, 117°52'24" 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:17.1 ft. [5.2 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 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:25,000 [as of 2005]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 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: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]
Operating rating:59.5 tons [54.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:71.8
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$3,178,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201571.8FairSatisfactoryVery GoodVery GoodFO25000
July 201368.6PoorPoorGoodGoodSD25000
June 201171.8FairSatisfactoryGoodGoodFO25000
May 200971.8FairSatisfactoryGoodGoodFO25000
April 200794.0FairSatisfactoryGoodGoodFO-
June 200494.0FairSatisfactoryGoodGoodFO-
April 200272.6FairSatisfactoryGoodGoodFO18700
July 200076.7GoodGoodGoodGoodFO18700
March 199576.7GoodGoodGoodGoodFO18700
March 199381.3GoodVery GoodVery GoodVery Good-18300
August 199181.3GoodVery GoodVery GoodVery Good-18300

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Closed Web/Box Girderlinear ft.183183000
Reinforced Concrete Top Flangesq. ft.1,89201,882100
Reinforced Concrete Abutmentlinear ft.2727000
Reinforced Concrete Pileeach11000
Pourable Jointlinear ft.4343000
Enclosed/Concealed Bearingeach22000
Bridge Rail
Other Material Bridge Raillinear ft.382382000