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Mississippi DOT. Roadsides, Drainage & Vegetation Management Standards. MDOT Maintenance Condition Survey Information. Old Jorgenson System (stolen from Florida) Survey MS, US & Interstate Highways Do not survey county roads or city streets MDOT Maintained Inventory – 14,000 Miles

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mississippi dot

Mississippi DOT

Roadsides, Drainage & Vegetation Management Standards

mdot maintenance condition survey information
MDOT Maintenance Condition Survey Information
  • Old Jorgenson System (stolen from Florida)
  • Survey MS, US & Interstate Highways
  • Do not survey county roads or city streets
  • MDOT Maintained Inventory – 14,000 Miles
  • Samples are one (1) mile in length
  • 240 samples surveyed each year – 1.7% of the system
    • 20 per district every 6 months
    • Weighted per district by highway type
survey procedures
Survey Procedures
  • Survey Team Members
    • Maintenance Division
    • District Office Representative
    • County Supervisor and/or Area Superintendent
  • Maintenance Condition Standards
  • Maintenance Condition Survey Form
  • Reporting
maintenance condition standards
Maintenance Condition Standards
  • Pavement
  • Roadside
  • Traffic Services
  • Drainage
  • Vegetation & Aesthetics
  • Bridges
roadside standards
Roadside Standards
  • Shoulder (Un-Paved)
    • No shoulder drop-off greater than 2”
    • No deviations greater than 4” below or 2” above original design
    • Pass/Fail
  • Front Slope
    • No ruts or washouts greater than 6” in depth
    • Pass/Fail
roadside standards cont
Roadside Standards (Cont.)
  • Back Slope
    • No ruts or washouts greater than 12” in depth
    • No erosion onto adjacent property
    • Pass/Fail
  • Turnout
    • No ruts, potholes or washouts greater than 4” in depth
    • Pass/Fail
maintenance condition standards1
Maintenance Condition Standards
  • Pavement
  • Roadside
  • Traffic Services
  • Drainage
  • Vegetation & Aesthetics
  • Bridges
drainage standards
Drainage Standards
  • Storm Sewer
    • Cross- sectional area is not restricted more than 10%
    • Pass/Fail
slide9

Side Drain

    • Cross- sectional area is not restricted more than 20%
    • Pass/Fail
slide10

Cross Drain

    • Cross- sectional area is not restricted more than 15%
    • Pass/Fail
slide11

Ditch Bottom Inlet

    • No obstruction of openings more than 15%
    • Pass/Fail
slide12

Roadside Ditch

    • Standard ditch bottom not less than 2.5 feet below the edge of pavement.
    • Pass/Fail
slide13

Curb Inlet

    • No obstruction of openings more than 10%
    • Pass/Fail
drainage standards cont
Drainage Standards (Cont.)
  • Median Ditch
    • Standard ditch bottom not less than 2 feet below the edge of pavement.
    • Pass/Fail
  • Outfall Ditch
    • Outfall functioning as originally designed
    • Pass/Fail
  • Misc. Drainage Structure (paved ditch, flumes, French drain, edge drain)
    • Pass/Fail
drainage standards cont1
Drainage Standards (Cont.)
  • Roadway Sweeping
    • Material Accumulation > ¾” in traveled way or 2 ¼” in gutter
    • Pass/Fail
maintenance condition standards2
Maintenance Condition Standards
  • Pavement
  • Roadside
  • Traffic Services
  • Drainage
  • Vegetation & Aesthetics
  • Bridges
vegetation aesthetics
Vegetation & Aesthetics
  • Roadside Mowing
    • Grass no higher than 10” (Multi-Lane Facilities)
    • Grass no higher than 18” (All other routes)
    • Grass height not less than 4”
    • Pass/Fail
  • Slope Mowing
    • Grass no higher than 10” (Multi-Lane Facilities)
    • Grass no higher than 18” (All other routes)
    • Grass height not less than 4”
    • Pass/Fail
vegetation aesthetics cont
Vegetation & Aesthetics (Cont.)
  • Landscaping
    • Vegetation is maintained in a healthy, attractive condition
    • Pass/Fail
  • Tree Trimming
    • Tree limbs no lower than 14.5’ over travelway, shoulder, clear zone
    • Tree limbs no lower than 10’ over sidewalk
    • No dead or dying trees over or adjacent to travelway that could prove to be hazardous
    • Pass/Fail
vegetation aesthetics cont1
Vegetation & Aesthetics (Cont.)
  • Curb/Sidewalk Edge
    • Grass or debris encroaches on sidewalk no more than 4”
    • Adjacent Grass no more than 2” below nor 4” above top of curb or sidewalk
    • Pass/Fail
  • Litter Removal
    • No more than 100 visible pieces (Multi-Lane)
    • No more than 50 visible pieces (2-Lane)
    • Pass/Fail
  • Turf Condition
    • Sparse turf, contains high percentage of undesirable noxious or broadleaf weeds
    • Pass/Fail
summary
Summary
  • Current Maintenance Condition Standards in place since the late 1980’s
  • Survey Results not tied to budget
  • No penalty for standard failures
  • Annual Report with results developed by Maintenance Division
  • Looking to Update Survey and MMS in the near future.