Mississippi DOT

1
Mississippi DOT

• Roadsides, Drainage Vegetation Management
  Standards

2
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

3
Survey Procedures

• Survey Team Members
• Maintenance Division
• District Office Representative
• County Supervisor and/or Area Superintendent
• Maintenance Condition Standards
• Maintenance Condition Survey Form
• Reporting

4
Maintenance Condition Standards

• Pavement
• Roadside
• Traffic Services
• Drainage
• Vegetation Aesthetics
• Bridges

5
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

6
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

7
Maintenance Condition Standards

• Pavement
• Roadside
• Traffic Services
• Drainage
• Vegetation Aesthetics
• Bridges

8
Drainage Standards

• Storm Sewer
• Cross- sectional area is not restricted more than
  10
• Pass/Fail

9

• Side Drain
• Cross- sectional area is not restricted more than
  20
• Pass/Fail

10

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

11

• Ditch Bottom Inlet
• No obstruction of openings more than 15
• Pass/Fail

12

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

13

• Curb Inlet
• No obstruction of openings more than 10
• Pass/Fail

14
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

15
Drainage Standards (Cont.)

• Roadway Sweeping
• Material Accumulation gt ¾ in traveled way or 2
  ¼ in gutter
• Pass/Fail

16
Maintenance Condition Standards

• Pavement
• Roadside
• Traffic Services
• Drainage
• Vegetation Aesthetics
• Bridges

17
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

18
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

19
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

20
Summary

• Current Maintenance Condition Standards in place
  since the late 1980s
• 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.

21
Questions???