The Crisfield–Westover road was one of the original state roads marked for improvement by the Maryland State Roads Commission in 1909.
The highway was proposed to follow what is today MD 667 from the Crisfield city limits to Marion Station, Charles Cannon Road from Marion Station to west of Kingston, then Kingston Lane through Kingston.
East of Kingston and north of Hudson Corner, the proposed highway turned north onto Old Westover Marion Road, which it followed to Westover.
The state road then turned right onto Sam Barnes Road and followed what is now US 13 to Old Princess Anne Road.
The highway was under construction from Old Princess Anne Road to Kingston Lane by 1911.
That segment was completed as a 14-foot-wide (4.3 m) macadam road in 1913.
The macadam road was extended southwest to Marion Station in 1915.
Another section of the highway was built as a 14-foot-wide (4.3 m) concrete road from the city limits of Crisfield to Hopewell in 1914.
The gap between Hopewell and Marion and improvement of Chesapeake Avenue within Crisfield were not completed by 1915; both segments were built as concrete roads by 1921.
The Crisfield–Westover highway was designated MD 413 in 1927.

MD 413 was widened to 18 feet (5.5 m) from Crisfield to Marion Station by 1930.
The first section of the state highway to be moved to its present course was through Westover; the new highway was built as a concrete road in conjunction with the relocation of US 13 in 1934 and 1935.
Sam Barnes Road between the new alignments of MD 413 and US 13 became MD 757 by 1946 and MD 673 in 1950.
The next section of new MD 413 was built from the Crisfield city limits at MD 358 to the old road at Hopewell in 1938 and 1939; the old highway was designated MD 667.
MD 667 was extended to Marion Station when new MD 413 was extended there in 1942.
The remainder of modern MD 413 was constructed from Marion Station to Westover in 1949 and 1950; MD 667 was extended to Westover along the old road.
The first segment of MD 406 was constructed as a concrete road from MD 413 at Hudson Corner east to Corntrack Road in 1929 and 1930.
The original segment of MD 406 and the remainder of Rehobeth Road were relocated to the modern alignment, paved, and widened to 20 feet (6.1 m) in 1953 and 1954.
MD 667 north of Hudson Corner was transferred to county maintenance and the route assumed all of MD 406 from Hudson Corner to US 13 in 1961.
The western terminus of MD 667 was rolled back to the Crisfield city limit by 1995.
The Crisfield–Westover road was one of the original state roads marked for improvement by the Maryland State Roads Commission in 1909. The highway was proposed to follow what is today MD 667 from the Crisfield city limits to Marion Station, Charles Cannon Road from Marion Station to west of Kingston, then Kingston Lane through Kingston. East of Kingston and north of Hudson Corner, the proposed highway turned north onto Old Westover Marion Road, which it followed to Westover. The state road then turned right onto Sam Barnes Road and followed what is now US 13 to Old Princess Anne Road. The highway was under construction from Old Princess Anne Road to Kingston Lane by 1911. That segment was completed as a 14-foot-wide (4.3 m) macadam road in 1913. The macadam road was extended southwest to Marion Station in 1915. Another section of the highway was built as a 14-foot-wide (4.3 m) concrete road from the city limits of Crisfield to Hopewell in 1914. The gap between Hopewell and Marion and improvement of Chesapeake Avenue within Crisfield were not completed by 1915; both segments were built as concrete roads by 1921. The Crisfield–Westover highway was designated MD 413 in 1927.
MD 413 was widened to 18 feet (5.5 m) from Crisfield to Marion Station by 1930. The first section of the state highway to be moved to its present course was through Westover; the new highway was built as a concrete road in conjunction with the relocation of US 13 in 1934 and 1935. Sam Barnes Road between the new alignments of MD 413 and US 13 became MD 757 by 1946 and MD 673 in 1950. The next section of new MD 413 was built from the Crisfield city limits at MD 358 to the old road at Hopewell in 1938 and 1939; the old highway was designated MD 667. MD 667 was extended to Marion Station when new MD 413 was extended there in 1942. The remainder of modern MD 413 was constructed from Marion Station to Westover in 1949 and 1950; MD 667 was extended to Westover along the old road. The first segment of MD 406 was constructed as a concrete road from MD 413 at Hudson Corner east to Corntrack Road in 1929 and 1930. The original segment of MD 406 and the remainder of Rehobeth Road were relocated to the modern alignment, paved, and widened to 20 feet (6.1 m) in 1953 and 1954. MD 667 north of Hudson Corner was transferred to county maintenance and the route assumed all of MD 406 from Hudson Corner to US 13 in 1961. The western terminus of MD 667 was rolled back to the Crisfield city limit by 1995.
Maryland Route 667