I40 over I40 / LEATH BAYOU


+35.18000, -90.01781
35°10'48" N, 90°01'04" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I40 over I40 / LEATH BAYOU
Structure number:79I00400055
Location:06 MI S OF I40-I240 JCT
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:14.1 ft. [4.3 m]
Total length:44.0 ft. [13.4 m]
Owner:State Highway Agency [01]
Year built:1964
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: December 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:114,720 [as of 2017]
Truck traffic:11% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
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]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:67.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$857,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
December 2018Fair6 out of 1011472067.0
December 2016Fair6 out of 1011404067.0
January 2015Good7 out of 1011115067.0
January 2013Good7 out of 1011160067.0
April 2011Good7 out of 1011672067.0
April 2009Good7 out of 1010977067.0
May 2007Good7 out of 1010085067.0
August 2005Good7 out of 109339067.0
August 2003Good7 out of 1010392067.0
September 2001Good7 out of 109855070.0
January 2000Good7 out of 109384067.0
December 1997Good7 out of 109371070.0
August 1995Good7 out of 108810070.0
August 1993Good7 out of 108621070.0
November 1991Good7 out of 107357069.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.1,0551,0243100