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US 84 over MISSISSIPPI RIVER

Map

Coordinates:
+31.55600, -91.41619
31°33'22" N, 91°24'58" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 84 over MISSISSIPPI RIVER
Structure number:21000840010001A
Location:MISS/LA STATE LINE
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:875.0 ft. [266.7 m]
Total length:4205.3 ft. [1281.7 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:34.1 ft. [10.4 m]
Vertical clearance above deck:15.7 ft. [4.8 m]
Vertical clearance below bridge:59.1 ft. [18.0 m]
Owner:State Highway Agency [01]
Year built:1940
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:5
Main spans material:Steel continuous [4]
Main spans design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:12,000 [as of 2017]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:50.4
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$999,999,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018FairSatisfactoryFairSatisfactory1200050.4
October 2016FairSatisfactoryFairSatisfactory1150047.8
October 2014FairSatisfactoryFairSatisfactory1150048.9
September 2012FairSatisfactoryFairSatisfactory1150050.5
December 2010FairGoodFairSatisfactory1200050.5
March 2010FairGoodFairSatisfactory1200050.5
December 2008PoorGoodPoorSatisfactory1300041.8
September 2007FairGoodFairSatisfactory1300053.4
May 2006FairVery GoodSatisfactorySatisfactory1200063.7
January 2003FairVery GoodGoodSatisfactory1200063.7
October 2001FairVery GoodGoodSatisfactory1300059.6
August 2000FairGoodFairSatisfactory1169049.5
February 2000FairVery GoodGoodSatisfactory1169059.7
February 1999FairVery GoodGoodSatisfactory1169059.7
May 1996GoodVery GoodVery GoodGood1169050.5
February 1995GoodVery GoodVery GoodVery Good1169050.5
December 1991GoodVery GoodVery GoodVery Good1169050.5
December 1989GoodGoodVery GoodVery Good1169057.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.1,6401,52012000
Steel Protective Coatingsq. ft.28,5690028,55415
Steel Stringerlinear ft.11,49211,22202700
Steel Protective Coatingsq. ft.102,20295,0041,0806,1180
Deck
Reinforced Concrete Decksq. ft.100,7760100,77600
Superstructure
Steel Trusslinear ft.7,32801,2106,1180
Steel Protective Coatingsq. ft.551,516468,00052,75830,7580
Steel Floor Beamlinear ft.3,3763,099264130
Steel Protective Coatingsq. ft.51,6450051,6450
Steel Pin or Pin & Hangar Assemblyeach78186540
Steel Protective Coatingsq. ft.78005402400
Steel Gusset Plateeach396003960
Steel Protective Coatingsq. ft.3,960002,970990
Substructure
Reinforced Concrete Columneach1212000
Reinforced Concrete Pier Walllinear ft.192019200
Reinforced Concrete Abutmentlinear ft.100010000
Reinforced Concrete Pier Caplinear ft.133133000
Joints
Open Jointlinear ft.6005760240
Assembly without Seal Jointlinear ft.144144000
Bearings
Movable Bearingeach124800
Steel Protective Coatingsq. ft.120040800
Fixed Bearingeach2222000
Steel Protective Coatingsq. ft.220220000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.8,3988,18821000
Steel Protective Coatingsq. ft.83,980083,98000