Washington Outer Beltway
The Washington Outer Beltway was a proposed freeway that would have extended further out than the Capital Beltway and encircled Washington, D.C. through the states of Maryland and Virginia. Most of the route was canceled in the 1980s.
Parts of it have been built as the following roads:
- Fairfax County Parkway in Virginia
- Intercounty Connector in Maryland, a toll road currently under construction. (The first segment opened to traffic in February 2011, and the second segment opened to traffic on November 22, 2011, thus linking Interstate 270 (I-270) at Gaithersburg, Maryland to I-95 at Laurel, Maryland). A third segment, which will link I-95 to US 1 in Laurel is to be completed by 2014. 
The Techway is a dormant proposal for a limited-access highway across the Potomac River between Fairfax County, Virginia and Montgomery County, Maryland. The project's name highlights the fact that both suburbs of Washington, D.C. are employment centers with a large representation of technology companies and government agencies such as the National Institute of Standards and Technology. The Techway proposal would construct a limited-access highway and bridge linking Virginia State Route 28 north of Washington Dulles International Airport to the western terminus of I-370 in Gaithersburg, Maryland. To avoid criticism that such a project would encourage urban sprawl, the proponents advocated having very few interchanges on the route and emphasizing its use in making Dulles Airport and the associated office buildings in its vicinity more convenient to residents of Northern Montgomery County that currently use the American Legion Memorial Bridge.
In 2001, Congress authorized funds earmarked for conducting a feasibility and environmental study of the Techway. However, constituents of one of the primary sponsors of the study, Congressman Frank Wolf, protested the project, which would traverse his Congressional District. As a result, Wolf pressed to have the study halted in 2002. In 2004, a Virginia Department of Transportation traffic study of the American Legion Bridge showed that a significant portion of bridge users traveled between points west of that bridge, reviving the Techway concept. In addition, the Techway project was also discussed in connection with Maryland Route 200 that will extend I-370 to the east to US 1. The combination of the Techway and this other extension would go a long way to form a Western Bypass of Washington DC for north-south traffic on I-95. Also in 2004, the Montgomery County Council unanimously passed a resolution opposing any bridge, citing concerns about destruction of existing neighborhoods, damage to parkland along the Potomac River and the need to protect the county's 90,000-acre (360 km2) Agricultural Reserve. As of 2011, the Techway project is not funded and not under active study.
- Virginia portal
- Maryland portal
- Washington, D.C. portal
- List of ring roads
- Outer Perimeter - a once-proposed outer circumferential highway around Atlanta, Georgia.
- "2010 Financial Plan Annual Update" (PDF). Maryland State Highway Administration. pp. 1–5. Retrieved 2011-03-05.
- Ginsberg, Steven (May 11, 2004). "Traffic Study Renews 'Techway' Debate". Washington Post. p. B01. Retrieved 2010-08-01.
- "Cancelled Techway Bridge study sparks battle". Fleet Owner. Sep 12, 2001. Retrieved 2010-08-01.
- Cetron, Ari (September 28, 2005). "Three Men and a Bridge". Vienna Connection Newspaper. Retrieved 2010-08-01.
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