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I0310 over MISSISSIPPI RIVER

Map

Coordinates:
+29.94444, -90.37290
29°56'40" N, 90°22'22" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0310 over MISSISSIPPI RIVER
Structure number:024504503700001
Location:I-310 OVER LA 48 AND LA 1
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:1235.0 ft. [376.4 m]
Total length:2745.2 ft. [836.7 m]
Roadway width between curbs:76.4 ft. [23.3 m]
Deck width edge-to-edge:92.5 ft. [28.2 m]
Vertical clearance below bridge:131.2 ft. [40.0 m]
Owner:State Highway Agency [01]
Year built:1983
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:5
Main spans material:Steel continuous [4]
Main spans design:Stayed girder [14]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: February 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:54,800 [as of 2015]
Truck traffic:10% 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:Superior to present desirable criteria [9]
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]
Pier/abutment protection:In place and functioning [2]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Sufficiency rating:70.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2017GoodGoodGoodGood5480070.0
February 2015GoodGoodGoodGood5480070.0
February 2013GoodGoodGoodGood4460070.0
February 2012PoorGoodSeriousGood4440036.0
February 2011PoorGoodSeriousGood4380036.0
November 2009PoorGoodSeriousGood3980036.0
August 2008PoorGoodSeriousGood3960036.0
May 2007PoorGoodSeriousGood3900036.0
April 2004FairGoodSatisfactoryGood4190070.0
March 2001FairGoodSatisfactoryGood3989270.0
April 1997FairGoodSatisfactoryGood3989270.0
December 1994FairSatisfactorySatisfactoryGood3102170.0
March 1991FairGoodSatisfactoryGood971270.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.5,4905,13735300
Steel Stringerlinear ft.112,545112,545000
Steel Main Cablelinear ft.7272000
Steel Floor Beamlinear ft.14,35014,30530150
Substructure
Steel Column Tower/Trestlelinear ft.1,6001,45015000
Reinforced Concrete Pier Walllinear ft.5505381200
Steel Pier Caplinear ft.9008703000
Deck
Corrugated or Orthotropic Decksq. ft.225,090225,088200
Wearing Surfacessq. ft.225,000222,4002,60000
Joints
Assembly with Sealeach164164000
Bearings
Movable Bearingeach2018200
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.10,98010,980000
Steel Protective Coatingsq. ft.33,00018,4005,6009,0000