# List of former Maryland state highways (600–699)

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.

## MD 600

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.

## MD 602

Maryland Route 602 was the designation for Fort Meade Road, which ran from US 1 in Laurel east to Fort George G. Meade. The highway was a military access project during World War II. The first segment of the new highway, from US 1 to what was then MD 216 near Brock Bridge Road in what is now Maryland City, was started in 1943 and completed in 1944. This segment included a bridge across the Baltimore & Ohio Railroad (now CSX) in Laurel and a bridge across the Patuxent River. The remainder of MD 602, from near Brock Bridge Road to the entrance to Fort Meade near the Little Patuxent River, was completed by 1946. The highway was replaced by an eastward extension of MD 198 in 1963.

## MD 604

Maryland Route 604 was the designation for Watkins Road from east of Davis Mill Road to west of Wildcat Road near Damascus in northern Montgomery County. The highway was constructed as a macadam road in 1934 and 1935. MD 604 was removed from the state highway system in 1956.

## MD 605

Maryland Route 605 was the designation for Takoma Avenue, which ran 0.28 miles (0.45 km) from Eastern Avenue at the District of Columbia boundary north to the intersection of Takoma Avenue, Albany Avenue, and Fenton Street within Takoma Park in southeastern Montgomery County. The street was paved as a concrete road in 1935. MD 605 was transferred from state to municipal maintenance in 2005.

## MD 606

Maryland Route 606 was the 2.27-mile-long (3.65 km) designation for Corsica Neck Road from Spider Web Road east to MD 304 in Centreville in central Queen Anne's County. The highway was constructed as a macadam road west from Centreville Landing, the wharf area for Centreville, in 1935. The highway included a new bridge across the Old Mill Stream Branch of the Corsica River in 1936 and 1937. The short piece of MD 606 west of its intersection with MD 304 was resurfaced in 1949. The following year, MD 304 was extended west along the full course of MD 606.