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Environmental Stewardship

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Sustainable Transportation

South River Marsh and coastal development in Marshfield

Environmental Stewardship 

MassDOT is committed to environmental stewardship and supports activities that protect the natural environment through our actions and our coordination with other state agencies. 

Executive Orders 484 and 515, known as Leading by Example and the Environmental Purchasing Policy respectively, require state agencies to invest public resources in ways that support environmental sustainability by conserving energy and water, implementing efficiency measures, and producing or purchasing renewable energy. 

The Leading by Example Program in the Department of Energy Resources oversees implementation of EO 484. The Operational Services Division, within the Executive Office of Administration and Finance, oversees the statewide Environmental Purchasing Program.

MassDOT has made significant progress in greening the agencies internal operations. Environmental efforts in MassDOT’s internal operations include:

  •  Fleets
    • Procurement of hybrid and plug-in hybrid vehicles for Highway Division fleet
    • Anti-idling technology for MBTA buses, commuter rail trains, and Highway Division vehicles
    • Installation of 30 electric vehicle charging stations at MBTA park-and-ride lots 
    • Purchasing biodiesel fuel for Highway Division diesel vehicles
  • Snow and ice
    • Salt pre-wetting, improving salt use efficiency
    • Designation of reduced salt zones, protecting sensitive agricultural and groundwater recharging areas
    • Technological improvements including friction meters, efficient salt spreading technology, and tow plows
  • Facilities
    • Facilities energy audits and upgrades
    • Waste management and recycling improvements 
    • Environmentally preferable product and supply procurement
    • Green roofs on transit stations
  • Energy
    • Energy efficient LED lighting replacement for tunnels, roadways, park-and-ride lots, and the transit system
    • Renewable energy generation through solar panel installation along highways and at MBTA's Orient Heights Station
    • A wind turbine at MBTA Kingston Commuter Rail Layover Facility
  • Construction and materials
    • Warm mix asphalt rather than hot mix asphalt, reducing energy use in asphalt production process by 20 percent
    • Recycled tires used in asphalt production
    • Cold-in-place recycling techniques for suitable projects
  • Ecological protection 
    • Impaired Waters Program, monitoring and alleviating runoff pollution for 680 water body segments
    • Restoration of six wetlands since 2013 (not including mitigation-related wetland restoration)
    • Rebuilt culverts, allowing enhanced water flow and wildlife passage
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