Green Highways Partnership

The Green Highways approach to infrastructure planning, design, and construction is a revolutionary approach to resource protection and environmental compliance. The approach is based on providing predictable pathways to streamline the delivery of transportation projects by the use of incentives and recognition for the use of innovate stormwater and environmental designs that are done in the context, or framework, of a watershed approach.

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Green Streets Notebook

This guide, currently under development, is an effort directed at providing a comprehensive look at green practices in street right of ways and transportation corridors. The manual will be organized to present information pertaining to planning programs, specific practices which occur at the site level, construction, regulation and policy, research, materials and long-term performance results and maintenance issues and programs. Each section may provide regional examples so that the user may find not only overall guidance information but also locally specific information which will further the goals of providing low impact development solutions in stormwater across the country.

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Green Streets Policy Paper & EPA Green Infrastructure Collaboration

The use of Green Streets offers the capability of transforming a significant stormwater and pollutant source into an innovative treatment system. Green Streets optimize the performance of public space easing maintenance concerns and allowing municipalities to coordinate the progression and implementation of stormwater control efforts. In addition, Green Streets optimize the performance of both the transportation and water infrastructure. Effectively incorporating green techniques into the transportation network provides significant opportunity to decrease infrastructure demands and pollutant transport.

To support EPA’s green infrastructure initiative, the Center prepared a series of policy reports for the Green Infrastructure Municipal Handbook ( The Green Streets policy report evaluates policies that have been used to encourage greener transportation corridors and highlights case studies of successful programs. The Municipal Handbook is intended as a resource for program managers looking to develop sustainable approaches to managing their infrastructure.

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Project 25-20(01): Evaluation of Best Management Practices for Highway Runoff Control Low Impact Development Highway Manual (National Cooperative Highway Research Program, NCHRP)

The LID Center was a Co-Principal Investigator under a team lead by Oregon State University that developed comprehensive LID strategies for linear transportation projects. This effort included an LID design guidance manual.

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Anacostia Waterfront Transportation Architecture Design Standards

The Center worked with Michael Baker Corporation to develop low impact development design options for the Anacostia Waterfront Transportation Architecture Design Standards for Washington DC’s Department of Transportation. The Anacostia section of the District is expected to experience significant redevelopment and the standards are intended to guide the process by ensuring the selection of designs and materials consistent with the historic feel of the area. The Center’s work highlighted appropriate LID options according to land use and environmental criteria. This awarding winning document demonstrated how LID can be seamlessly integrated into urban design to provide community and aesthetic benefits and enhanced environmental performance.

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Anacostia Design Templates / Arthur Capper

The Arthur Capper Hope VI Project was a retrofit study for a large scale redevelopment to determine how LID can be incorporated into community design. The study includes design templates and a modeling demonstration on the effectiveness of the approach. This has become a model for many retrofit projects throughout the country.

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Nannie Helen Burroughs - Great Street Project

Nannie Helen Burroughs Avenue, NE, is a 1.5 mile long minor arterial and multi-modal corridor that accommodates regional commuters, transit riders, local auto travel, pedestrians, and bicyclists. Nannie Helen Burroughs runs roughly parallel to Watts Branch, the largest tributary to the Anacostia River within the District with a drainage area of 3.75 Square miles.

Because of its context in this critical watershed, DDOT plans to redesign the Nannie Helen Burroughs Avenue Corridor as a model of innovative, environmentally-progressive practices, in order to improve the local environment and quality of life. Proposed improvements include additional street trees, rain gardens, permeable pavement, a “road diet” reduction of impervious asphalt, bioretention cells, multi-chamber catch basins and other Stormwater / Best Management Practices (BMPs).

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Interlocking Concrete Pavement Institute (ICPI)

The LID Center developed four training presentations as part of a collaborative effort between the Interlocking Concrete Pavement Institute (ICPI) and North Carolina State University to provide the most current background information, design guidance, and research results on PICP.

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Town of Edmonston (Maryland) Urban Greening

This new Green Street Project may use the Green Highways approach to set and prioritize goals for Green Infrastructure in the community. A potential outcome will be a demonstration/pilot project on a street in the Town of Edmonston.


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Irving Street Cloverleaf Retrofit (Washington DC)

Afforestation, permeable pavement and bioretention cells on two cloverleafs. Designed as a retrofit for WASA in 2006-07. The LID Center provided professional and technical support Greeley and Hansen LLC for drainage analysis, hydrologic and hydraulic analysis, bioretention grading and planting plan, construction specifications for planting and bioretention elements.

The LID Center provided guidance to on hydrologic and hydraulic analysis for bioretention design, developed an aforestation plan for the interchange (including planting schematic and plant list),  and provided designs for approximately bioretention cells (including preliminary grading plan, planting plan and plant schedule).


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Mount Rainier

This project was identified by the Sierra Club as one of ten outstanding examples of community infrastructure design. The LID Center designed this project for the University of Maryland, College Park and the Hydrology and Hydraulics Division of the Maryland State Highway Administration (SHA) on the development of LID techniques for urban retrofits. SHA is faced with the challenge of providing water quality retrofits (e.g. reducing impervious impacts) on road improvement projects in highly urbanized watersheds.

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WERF Phase I & II

This research evaluates the functional processes employed by decentralized controls and possible methods of quantifying stormwater retention and detention mechanisms. The results of this research provide a framework for communities to begin implementing decentralized controls as a component of a combined sewer inflow reduction program. Analytical assessments of categorical controls are provided to aid in the selection of appropriate decentralized techniques and strategies.

The LID Center also developed the website, "LID Strategies and Tools for NPDES Phase II Communities". This site was developed through a Cooperative Assistance Agreement under the U.S. EPA Office of Water 104b(3) program in order to assist stormwater Phase II communities integrate low impact development (LID) strategies into their compliance programs. LID is a rapidly growing approach to stormwater management that offers the opportunity for Phase II communities to develop a comprehensive natural resource and water quality protection program.

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Low Impact Development Center Green Infrastructure Website

Detailed Project Descriptions