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Maryland Route 612

List of former Maryland state highways (600–699)
MD Route 600.svgMD Route 699.svg
Highway names
Interstates: Interstate X (I-X)
US Highways: U.S. Route X (US X)
State: Maryland Route X (MD X)
List of former Maryland state highways
System links

Maryland Route 600
Location: EssexMiddle River
Existed: 1944–1956

Maryland Route 602
Location: LaurelFort Meade
Existed: 1944–1956

Maryland Route 604
Location: Damascus
Existed: 1935–1956

Maryland Route 605
Location: Takoma Park
Length: 0.28 mi (0.45 km)
Existed: 1935–2005

Maryland Route 606
Location: Centreville
Existed: 1935–1951

Maryland Route 608
Location: Sykesville
Existed: 1935–1954

Maryland Route 609
Location: NorbeckNorwood
Existed: 1935–1981

Maryland Route 612
Location: Harney
Existed: 1935–1954

Maryland Route 613
Location: FriendshipRose Haven
Existed: 1936–1963

The Maryland highway system has several hundred former state highways. These highways were constructed, maintained, or funded by the Maryland State Roads Commission or Maryland State Highway Administration and assigned a unique or temporally unique number. Some time after the highway was assigned, the highway was transferred to county or municipal maintenance and the number designation was removed from the particular stretch of road. In some cases, a highway was renumbered in whole or in part. This list contains all or most of the state-numbered highways between 600 and 699 that have existed since highways were first numbered in 1927 but are no longer part of the state highway system or are state highways of a different number. Most former state highways have not had their numbers reused. However, many state highway numbers were used for a former highway and are currently in use. Some numbers have been used three times. The former highways below whose numbers are used presently, those that were taken over in whole or in part by another highway, or have enough information to warrant a separate article contain links to those separate highway articles. Highway numbers that have two or more former uses are differentiated below by year ranges. This list does not include former Interstate or U.S. Highways, which are linked from their respective lists.


Maryland Route 600 was the designation for Old Eastern Avenue, which ran from MD 150 in Essex east to MD 150 in Middle River. The highway was assigned after MD 150 was relocated to its present four-lane divided highway as a military access project between 1942 and 1944. MD 600 was removed from the state highway system in 1956.


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