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Center for Environmental Excellence | AASHTO
Center for Environmental Excellence | AASHTO
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  • Laws & Agreements
    • Programmatic Agreements Library (PAL)
    • Case Law Updates on the Environment (CLUE)
    • National Environmental Policy Act (NEPA)
    • NEPA Assignment
  • State of the Practice
    • Case Studies
    • Communities of Practice
    • Practitioner Interviews
  • Education
    • Environmental Topics
      • Active Transportation
      • Air Quality
      • Climate Change
      • Environmental Justice
      • Invasive Species/Vegetation
      • Stormwater
      • Sustainability
      • Traffic Noise
      • Waste Management/Recycling
      • Water Quality/Wetlands
      • Wildlife and Ecosystems
    • Practical Applications
      • Context Sensitive Solutions
      • Emerging Technologies
      • Environmental Management Systems
      • Geographic Information Systems
      • NEPA Process
      • Planning & Environment Linkages
      • Project Delivery
      • Protecting Cultural Resources
      • Public Involvement
      • Transportation Policy
      • Using the Practitioner’s Handbooks
  • News
  • Meetings & Events
    • Past Events
  • Resources
    • Practitioner’s Handbooks
    • AASHTO Publications
    • AASHTO Standing Committees
    • Federal & State Agencies
    • Trade Associations
    • Research
      • NCHRP 25-25
      • TERI Database
      • TRB Committees

Case Studies

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man reads map on mountainous riverbank at sunrise

Colorado DOT Employs Innovative Distillation Approach to Treat Wastewater

By Amber GarnettApril 7, 2019

An innovative distillation treatment system is helping the Colorado Department of Transportation (CDOT) treat greywater from the floor drains of its maintenance facilities. This new system not only is showing…

woman video conferences with coworkers.

Public Engagement Helps Ohio DOT Reduce Impacts from Cleveland Corridor Project

By ahardingFebruary 19, 2019

The Ohio Department of Transportation is using public engagement methods to identify ways to reduce potential impacts on low-income and minority residents from a new 3.5-mile urban boulevard project in…

Digital image of a GPS.

Project Initiation with Mapping Tool Speeds MassDOT Project Delivery

By ahardingDecember 8, 2018

An online project planning application developed by the Massachusetts Department of Transportation is expected to speed up project delivery while improving stakeholder engagement and environmental outcomes. The MassDOT Project Intake…

Civil war cannon in field.

Pennsylvania DOT Uses ‘Story Map’ to Document History, Mitigate Impacts

By ahardingOctober 14, 2018

The Pennsylvania Department of Transportation is using an innovative “Story Map” to share important historical information about an area impacted by a road improvement project on Route 322 in Centre…

Bike messenger holding cell phone

Using Social Media to Reach Environmental Justice Communities

By ahardingSeptember 7, 2018

Executive Order 12898 requires Federal Agencies to identify and address, as appropriate, disproportionately high and adverse effects of the agency’s programs, policies and activities on minority and low-income populations, often…

road through forest in autumn

In Ohio, Road Projects Beautify Communities through Aesthetic Design

By ahardingAugust 8, 2018

Transportation officials in Ohio have adopted new guidelines to ensure that projects across the state are attractive and compatible with local surroundings. Tim Hill, Administrator with ODOT’s Office of Environmental…

Young people meet in quarantine

PennDOT Seeks Local Input to Build Better Connections for Communities

By ahardingJuly 4, 2018

The Pennsylvania Department of Transportation (PennDOT) is reaching out to communities and partner agencies to ensure that all new road projects address a broad range of needs, ranging from bicycle…

Traffic lights for pedestrians and cyclists and blue sky

Connecticut DOT Helps Towns Accommodate Walking and Bicycling through Road Safety Audits

By ahardingMarch 30, 2018

An effective way to address obstacles to bicycle and pedestrian accommodation is to go out and look for them. That was the lesson the Connecticut Department of Transportation (CTDOT) learned…

Zero emissions bus

Maryland SHA Develops Decision Support Tool to Select Sustainable Solutions

By ahardingJanuary 3, 2018

A new decision support tool under development by Maryland’s State Highway Administration will help the agency quickly find cost-effective solutions to address congested travel corridors while protecting the state’s environmental…

Highway with bridge and crosswalk.

Georgia Highway Serves as a Technology Proving Ground

By ahardingDecember 8, 2017

An 18-mile stretch of roadway in Georgia is serving as a testing and proving ground for sustainable transportation technologies, with the support of the Georgia Department of Transportation (GDOT). The…

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  • All Content

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    • Using the Practitioner's Handbooks (8)
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The Center for Environmental Excellence by the American Association of State Highway and Transportation Officials (AASHTO) has been developed in cooperation with the Federal Highway Administration to promote environmental stewardship and to encourage innovative ways to streamline the transportation delivery process.

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