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I 20E I55N over GALLATIN ST LYNCH CK

Map

Coordinates:
+32.27568, -90.19356
32°16'32" N, 90°11'37" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 20E I55N over GALLATIN ST LYNCH CK
Structure number:110002002504590
Location:0.8 MI E I 55/I 20W
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:80.1 ft. [24.4 m]
Total length:839.9 ft. [256.0 m]
Roadway width between curbs:55.4 ft. [16.9 m]
Deck width edge-to-edge:59.4 ft. [18.1 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1966
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:Concrete continuous [2]
Main spans design:Box Beam or girders - Single or Spread [06]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:55,500 [as of 2014]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:70.4
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$936,000,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2016FairSatisfactorySatisfactoryVery Good5550070.4
August 2014FairSatisfactorySatisfactoryVery Good5650073.6
August 2012FairSatisfactorySatisfactoryVery Good5500073.7
July 2010GoodGoodVery GoodVery Good6700073.0
June 2008GoodGoodVery GoodVery Good6250073.3
June 2006GoodGoodVery GoodVery Good5450076.8
October 2004GoodGoodVery GoodVery Good5750076.6
September 2002GoodGoodVery GoodVery Good6000076.4
September 2000GoodGoodVery GoodVery Good4850074.2
September 1998GoodGoodVery GoodVery Good4850074.2
February 1997GoodGoodVery GoodVery Good4850074.2
February 1995GoodGoodVery GoodVery Good4030076.2
April 1991GoodGoodVery GoodVery Good3664076.5

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Reinforced Concrete Closed Web/Box Girderlinear ft.320320000
Prestressed Concrete Girder/Beamlinear ft.5,0005,000000
Deck
Reinforced Concrete Decksq. ft.32,06532,065000
Reinforced Concrete Top Flangesq. ft.19,00019,000000
Substructure
Reinforced Concrete Abutmentlinear ft.164164000
Prestressed Concrete Pileeach8080000
Reinforced Concrete Pier Caplinear ft.844844000
Joints
Compression Jointlinear ft.112112000
Open Jointlinear ft.715715000
Assembly without Seal Jointlinear ft.56170039
Bearings
Elastomeric Bearingeach240240000
Movable Bearingeach1414000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,6801,680000
Reinforced Concrete Bridge Raillinear ft.1,6801,674600