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Interchange and Arterial Highway Design
Scaggsville Road (MD 216)
Howard County, Maryland
Baltimore-Washington
Parkway
Anne Arundel County, Maryland
Villages of Urbana MD 80
Interchange Study
Frederick County, Maryland
Riverton Commons
Warren County, Virginia
Carter's Crossing
Stafford County, Virginia
Return to L'Enfant
Washington, D.C.
Arterial highways carry high volumes of traffic over long distances with widely-spaced grade-separated interchanges. They are the backbone of a network of arterials, collectors, and local streets.

Grade-separated interchanges take many forms, including: diamond; trumpet; single-point urban diamond full and, partial cloverleaf; and fully directional interchanges. The interchange form that is most appropriate is a particular case is a function of many factors: long-range traffic forecasts, topography, wetlands and other environmental features, right-of-way, community impacts, and construction cost.

Wells + Associates signature projects include:

I-95/MD 216, Howard County, Maryland
Baltimore Washington Parkway/Arundel Boulevard, Anne Arundel County, Maryland
MD 80 Interchange Study, Urbana, Maryland.
I-66/VA 522, Warren County, Virginia
I-95/U.S. 17, Stafford County, Virginia
I-495/Arena Drive, Prince George’s County, Maryland
I-395/2nd Street/3rd Street, Washington, D.C.
I-66/Kennedy Center, Washington, D.C.
I-495/I-295/MD 410, Prince George’s County, Maryland


Wells + Associates offers the following interchange planning services:

Long-range travel demand forecasting
Geometric design
Identification and evaluation of typical interchange forms.
Identification and evaluation of special interchange forms for constrained locations
Ramp merge, diverge, and weave analyses
Mainline capacity analyses
Evaluation of operational and safety characteristics
Presentation of study process, findings, and recommendations
Maintenance of traffic (MOT) plans
Phased implementation of interchange improvements

Wells + Associates is equipped with the latest computer-aided tools and techniques for interchange design studies and advanced tools for effective communication of design impacts to the public and affected agencies.
© M.J. Wells & Associates, Inc. 2005 - 2010. All Rights Reserved.