Highway maintenance manual (HMM) - Chapter 6

Chapter 6 - Winter Maintenance - chapter index

Subject no. Subject title Effective date* Supersede date Old Subject no.
Section 1 - Introduction
06-01-01Winter Maintenance IntroductionAug 2024Feb 202230.05
06-01-05Mission and HistoryAug 2024Jan 202230.10
06-01-10SupervisionAug 2024Feb 202230.15
06-01-15Winter Section ManagementAug 2024Feb 202230.25
06-01-20Superintendents and Regional MeetingsDec 2024Feb 202230.30
Section 5 - Road Classifications
06-05-01Winter Highway ClassificationsAug 2024Jan 201230.20
06-05-05Frozen Road DeclarationOct 2022Jan 201837.05
06-05-10Class II RoadsOct 2022Jan 201837.10
06-05-15Seasonal Posted RoadsOct 2022Jan 201837.15
Section 10 - Storm Management Responsibilities
06-10-01Winter Maintenance SectionsDec 2024Jan 201231.05
06-10-05Night WatchpersonDec 2024Jan 201231.10
06-10-10Winter SurveillanceDec 2024Jan 201231.15
06-10-15Seasonal LaborDec 2024Jan 201231.25
06-10-20Winter Storm ReportsDec 2024Jan 201231.30
06-10-25Salting AuthorityDec 2024Jan 201231.35
06-10-30Operators, GeneralJul 2025Jan 201234.05
06-10-40Hours of ServiceJul 2025Jan 201234.15
06-10-45Assisting OthersJul 2025Jan 201234.20
06-10-50Trucking SaltJul 2025Dec 2017
Section 15 - Snow Removal
06-15-01Passable Roadway - During a Winter StormJul 2025Jan 201230.35
06-15-05Level of Effort by Category of RoadwayJul 2025Jan 201230.36
06-15-10White ShouldersJul 2025Jan 201230.40
06-15-1524-hour CoverageSep 2025Jan 201230.45
06-15-20Best Practices IndexJan 2012Oct 200230.55
06-15-25Storm Cleanup, GeneralSep 2025Jan 201232.05
06-15-30Storm Cleanup, Winging and BenchingSep 2025Jan 201232.10
06-15-35Plowing PrioritiesSep 2025Jan 201232.15
06-15-40Drift PreventionJan 2026Dec 201432.20
06-15-41Corn Row Snow FenceMay 2024Mar 2017
06-15-42Living Snow FenceSep 2024 Jul 2024
06-15-45MailboxesSep 2025Jan 201232.25
06-15-50Plowing Raised Pavement MarkersAug 2024Oct 200232.30
06-15-55Anti-Icing TechniquesSep 2025Jan 201232.35
06-15-60Artificial Snowmaking OperationsSep 2025Apr 2012
Section 20 - Snow Removal Materials
06-20-01Appropriate Use of De-icing AgentsDec 2025Jan 201235.05
06-20-05Proper Applications and Temperature Ranges for De-icing Agents and AbrasivesDec 2025Jan 201235.10
06-20-10Liquid Anti-icing/De-icing AgentsDec 2025Jan 201235.15
06-20-15AbrasivesDec 2025Jan 201235.20
06-20-20Application Rates Anti-icingDec 2025Jan 201235.25
06-20-25Application Rates of De-icingNov 200835.30
06-20-30Trans 277 GuidelineJuly 2023Jan 201239.05
06-20-35Trans 277 ProceduresJuly 2023Mar 201739.10
06-20-40Equipment - GeneralAug 2026
Jan 2012
36.05
06-20-45Operations of EquipmentAug 2026Jan 2012
36.10
06-20-50Liquid Anti-icing SystemsAug 2026Jan 2012
36.15
06-20-52AVL/GPS and SensorsOct 2025Sep 2021
06-20-55Spreader AttachmentsAug 2026
Jan 2012
36.20
06-20-60Ground Speed ControllersAug 2026Oct 2002
36.25
06-20-65Pre-Wetting SystemsAug 2026Jan 201236.30
06-20-70Plows and BladesAug 2026
Jan 201236.35
06-20-75Trucks
Aug 2026Jan 201236.40
06-20-80Graders, Snow-Blowers, All Wheel Drive TrucksJan 2012
Currency Review: Aug 2026
Oct 200236.45
06-20-84Needs for Sodium Chloride Storage FacilitiesJan 2017
06-20-85Salt Sheds, Brine Makers, and De-icing Agent SystemsOct 200236.50
06-20-86Salt Shed and Loader Building DesignsJan 2017
06-20-95
Infrared Pavement Temperature SensorsAug 2026Jan 201236.60
Section 25 - Weather Services
06-25-01RWIS Program ManagementFeb 2026Jan 201238.05
06-25-10Maintenance Decision Support SystemFeb 2026Dec 202538.15
06-25-15RWIS TrainingFeb 2026Jan 201238.20
06-25-20RWIS MaintenanceFeb 2026Jan 201238.25

​*​Effective dates will not be edited from the original effective month/year. Policy reviews to ensure that effective information remains current are annotated with a "Currency Review" date below the Effective date. The reader shall interpret a "Currency Review" date to indicate that the most recent policy Effective date information is still relevant.