High Quality Content by WIKIPEDIA articles! Maryland Route 318 (MD 318) is a state highway in the U.S. state of Maryland. The state highway runs 11.32 miles (18.22 km) from MD 16 and MD 331 near Preston east to the Delaware state line near Federalsburg, where the highway continues east as Delaware Route 18 (DE 18). MD 318 follows the Dorchester–Caroline county line for most of its length between Preston and Federalsburg. The county line road is considered to be in Caroline County for maintenance purposes. Further east, MD 318 runs concurrently with MD 313 to bypass Federalsburg. The portion of MD 318 west of Federalsburg was originally numbered MD 319 and assumed by MD 318 in the mid 1950s. The MD 319 section was constructed in the late 1910s near Federalsburg and completed west to MD 331 and MD 16 in the late 1920s. MD 318 east of Federalsburg was built in the mid 1920s. MD 318 was placed on the bypass of Federalsburg in the early 1960s; its old alignment through Federalsburg became MD 315.