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Winter Operations Guidelines Michigan Department of Transportation. Overview . The Case for Adjusting MDOT’s Winter Maintenance Strategy Lessons learned from 2007-2008 Increased costs Budget concerns Statewide consistency Sensible approach. Introduction. Assigning Winter Level of Service

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Winter operations guidelines michigan department of transportation l.jpg

Winter Operations GuidelinesMichigan Department of Transportation


Overview l.jpg
Overview

  • The Case for Adjusting MDOT’s Winter Maintenance Strategy

    • Lessons learned from 2007-2008

    • Increased costs

    • Budget concerns

    • Statewide consistency

    • Sensible approach


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Introduction

  • Assigning Winter Level of Service

  • Service Level Definitions

    • Priority 1-Orange Routes

    • Priority 2-Blue Routes

  • Winter Operations Guidelines

  • Frequently Asked Questions


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Assigning Winter Level of Service

  • State Long Range Transportation Plan (SLRP) 2005-2030 is the basis for assigning LOS

  • Designates routes into International, national, statewide,regional, and local significance

  • MDOT used these designations for assigning winter LOS

The SLRP 2005-2030 is available at michigan.gov/mdot


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SLRP Designation Factors

  • ADT

  • Commercial ADT

  • Total Population

  • Total Employment

  • Tourism

  • Airports

  • Carpool Lots

  • Intermodal Freight


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Priority 1-OrangeRoute

  • Goal is to achieve full width pavement “generally bare of ice and snow”

    • Operations should be continuous during and after the storm until goal is met

    • Use OT during and after storm event until goal is met


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Orange Route Statistics

  • 34% of state highway miles

  • 81% of commercial vehicle miles

  • 70% of passenger vehicle miles

  • 93% of state’s population live within 10 miles

  • 95% of state’s employment base is within 10 miles


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Priority 2-Blue Route

  • Goal is to provide pavement “generally bare of ice and snow” for one wheel track in each direction

    • Operations should be continuous during and after the storm until goal is met

    • Use OT during and after storm event until goal is met

    • Clearing the full width should be done after the storm event without using OT



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2008-2009 Winter Operations Guidelines

  • Generally Bare of Ice and Snow definition

  • Communication and

    Coordination

  • Effort During Storm

  • Exceptions

  • Service Uniformity


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Generally Bare of Ice and Snow

  • The travel lane surface is free from drifts, snow ridges, and as much ice and snow pack as practical

  • This does not mean bare pavement or dry pavement

  • Motorists should expect some inconvenience and must drive responsibly


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Communication and Coordination

  • Communicate early (preseason) with neighboring agencies

    • Discuss winter operations practices

    • Coordinate shift times if feasible

    • Exchange contact information

  • Communication during storm

    • Coordinate winter operations along a corridor

    • Minimize LOS inconsistencies at jurisdictional boundaries


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Effort During Storm

  • Plow and provide surface treatments as required during storm events

  • Remove as much snow mechanically as possible

  • Use only enough deicing agents as necessary

  • Refer to the Salt Application Charts


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Exceptions to Guidelines

  • Some exceptions may be appropriate including:

    • Adjusting service levels due to storm severity and duration

    • Adjusting maintenance activities due to an abnormal influx of traffic (sporting event or festival)


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Service Uniformity

  • The goal is to minimize unexpected changes in pavement surface condition

  • Routes should end at logical locations where one would anticipate a change


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FAQ’s-What happens when we achieve the LOS and its still snowing?

  • Operations should be continuous during the storm

  • If it is still snowing more than likely you will not have met the goal on the entire route


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FAQ’s-What happens when we achieve the LOS and it stopped snowing?

  • Operations should be continuous after the storm until goal is met for both priority levels*

  • During regular work hours continue with cleanup operation until completed or shift ends

  • If on overtime, operations should stop

    *Achieving LOS during extended periods of cold temperatures may not be possible even with continuous effort


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FAQ-How do you treat shoulders after the LOS has been met snowing?

  • Orange Route -Clearing the shoulders (with 2” of snow or more) should be done after the storm event using OT

  • Blue Route -Clearing the shoulders (with 2” of snow or less) should be done after the storm event without using OT



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FAQ’s-Why Were The LOS Maps Adjusted? snowing?

  • To further enhance statewide consistency

  • Address rising costs and stagnant budgets

  • To be consistent with the goals of the State Long Range Transportation Plan

  • Lessons learned from 2007-2008 season


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FAQ’s-Does a Blue Route Mean The Route Will Be Impassible? snowing?

  • No, a blue route and orange route will be treated with the same effort during a storm event

  • After the storm one wheel track in each direction will be maintained at a minimum and will always be passable

  • The motorist is responsible for driving according to conditions per the Michigan Vehicle Code


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Questions? snowing?


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