mississippi dot roadsides, drainage & vegetation management standards

Mississippi DOT Mississippi DOT

Roadsides, Drainage & Roadsides, Drainage & Vegetation Management Vegetation Management

StandardsStandards

MDOT Maintenance Condition MDOT Maintenance Condition Survey InformationSurvey Information

Old Jorgenson System (stolen from Florida)Old Jorgenson System (stolen from Florida) Survey MS, US & Interstate Highways Survey MS, US & Interstate Highways Do not survey county roads or city streetsDo not survey county roads or city streets MDOT Maintained Inventory – 14,000 MilesMDOT Maintained Inventory – 14,000 Miles Samples are one (1) mile in lengthSamples are one (1) mile in length 240 samples surveyed each year – 1.7% of 240 samples surveyed each year – 1.7% of

the system the system 20 per district every 6 months20 per district every 6 months Weighted per district by highway typeWeighted per district by highway type

Survey ProceduresSurvey Procedures

Survey Team MembersSurvey Team MembersMaintenance DivisionMaintenance DivisionDistrict Office RepresentativeDistrict Office RepresentativeCounty Supervisor and/or Area County Supervisor and/or Area

SuperintendentSuperintendentMaintenance Condition StandardsMaintenance Condition StandardsMaintenance Condition Survey FormMaintenance Condition Survey FormReporting Reporting

Maintenance Condition Maintenance Condition StandardsStandards

PavementPavementRoadsideRoadsideTraffic ServicesTraffic ServicesDrainageDrainageVegetation & AestheticsVegetation & AestheticsBridgesBridges

Roadside StandardsRoadside Standards

Shoulder (Un-Paved)Shoulder (Un-Paved)No shoulder drop-off greater than 2”No shoulder drop-off greater than 2”No deviations greater than 4” below or No deviations greater than 4” below or

2” above original design2” above original designPass/FailPass/Fail

Front SlopeFront SlopeNo ruts or washouts greater than 6” in No ruts or washouts greater than 6” in

depthdepthPass/FailPass/Fail

Roadside Standards (Cont.)Roadside Standards (Cont.)

Back SlopeBack SlopeNo ruts or washouts greater than 12” in No ruts or washouts greater than 12” in

depthdepthNo erosion onto adjacent propertyNo erosion onto adjacent propertyPass/FailPass/Fail

TurnoutTurnoutNo ruts, potholes or washouts greater No ruts, potholes or washouts greater

than 4” in depththan 4” in depthPass/FailPass/Fail

Drainage StandardsDrainage Standards

Storm SewerStorm SewerCross- sectional area is not restricted Cross- sectional area is not restricted

more than 10%more than 10%Pass/FailPass/Fail

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

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

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

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

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

Drainage Standards (Cont.)Drainage Standards (Cont.)

Median DitchMedian Ditch Standard ditch bottom not less than 2 feet Standard ditch bottom not less than 2 feet

below the edge of pavement.below the edge of pavement. Pass/FailPass/Fail

Outfall DitchOutfall Ditch Outfall functioning as originally designedOutfall functioning as originally designed Pass/Fail Pass/Fail

Misc. Drainage Structure (paved ditch, Misc. Drainage Structure (paved ditch, flumes, French drain, edge drain)flumes, French drain, edge drain) Pass/FailPass/Fail

Drainage Standards (Cont.)Drainage Standards (Cont.)

Roadway SweepingRoadway SweepingMaterial Accumulation > ¾” in traveled Material Accumulation > ¾” in traveled

way or 2 ¼” in gutterway or 2 ¼” in gutterPass/FailPass/Fail

Vegetation & AestheticsVegetation & Aesthetics

Roadside MowingRoadside Mowing Grass no higher than 10” (Multi-Lane Facilities)Grass no higher than 10” (Multi-Lane Facilities) Grass no higher than 18” (All other routes)Grass no higher than 18” (All other routes) Grass height not less than 4”Grass height not less than 4” Pass/FailPass/Fail

Slope MowingSlope Mowing Grass no higher than 10” (Multi-Lane Facilities)Grass no higher than 10” (Multi-Lane Facilities) Grass no higher than 18” (All other routes)Grass no higher than 18” (All other routes) Grass height not less than 4”Grass height not less than 4” Pass/FailPass/Fail

Vegetation & Aesthetics Vegetation & Aesthetics (Cont.)(Cont.)

LandscapingLandscaping Vegetation is maintained in a healthy, Vegetation is maintained in a healthy,

attractive conditionattractive condition Pass/FailPass/Fail

Tree TrimmingTree Trimming Tree limbs no lower than 14.5’ over travelway, Tree limbs no lower than 14.5’ over travelway,

shoulder, clear zoneshoulder, clear zone Tree limbs no lower than 10’ over sidewalkTree limbs no lower than 10’ over sidewalk No dead or dying trees over or adjacent to No dead or dying trees over or adjacent to

travelway that could prove to be hazardoustravelway that could prove to be hazardous Pass/FailPass/Fail

Vegetation & Aesthetics Vegetation & Aesthetics (Cont.)(Cont.)

Curb/Sidewalk EdgeCurb/Sidewalk Edge Grass or debris encroaches on sidewalk no more than 4”Grass or debris encroaches on sidewalk no more than 4” Adjacent Grass no more than 2” below nor 4” above top Adjacent Grass no more than 2” below nor 4” above top

of curb or sidewalkof curb or sidewalk Pass/FailPass/Fail

Litter RemovalLitter Removal No more than 100 visible pieces (Multi-Lane)No more than 100 visible pieces (Multi-Lane) No more than 50 visible pieces (2-Lane)No more than 50 visible pieces (2-Lane) Pass/FailPass/Fail

Turf ConditionTurf Condition Sparse turf, contains high percentage of undesirable Sparse turf, contains high percentage of undesirable

noxious or broadleaf weedsnoxious or broadleaf weeds Pass/Fail Pass/Fail

SummarySummary

Current Maintenance Condition Current Maintenance Condition Standards in place since the late Standards in place since the late 1980’s1980’s

Survey Results not tied to budgetSurvey Results not tied to budgetNo penalty for standard failuresNo penalty for standard failuresAnnual Report with results developed Annual Report with results developed

by Maintenance Divisionby Maintenance DivisionLooking to Update Survey and MMS in Looking to Update Survey and MMS in

the near future.the near future.

Questions???Questions???

mississippi dot roadsides, drainage & vegetation management standards

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