Virginia State Route 110 Virginia State Route 110 State Route 110 (SR 110) is a primary state highway in the U.S. state of Virginia. Known as the Jefferson Davis Highway, the state highway runs from U.S. Route 1 (US 1) and Interstate 395 (I-395) in Crystal City north to I-66 in Rosslyn within Arlington County. SR 110 is a four- to six-lane freeway that parallels the Potomac River, providing a connection between several of Arlington's urban villages. The state highway also provides access to the Pentagon, which is the headquarters of the United States Department of Defense, the grounds of Arlington National Cemetery, and
Fairlington, Arlington, Virginia located in the Fairlington Community Center. All of Fairlington, including the Alexandria portion, is in the 22206 ZIP code area and is served by the United States Postal Service's Shirlington Annex Post Office although the Parkfairfax Post Office in Alexandria is closer to most of Fairlington. Fairlington, Arlington, Virginia Fairlington is an unincorporated neighborhood in Arlington County, Virginia, United States, located adjacent to Shirlington in the southernmost part of the county on the boundary with the City of Alexandria. The main thoroughfares are Interstate 395 (Shirley Highway) which divides the neighborhood into North and South Fairlington, State Route 7 (King