List of former Maryland state highways explained

There are six lists of former Maryland state highways split by number ranges:

• List of former Maryland state highways (2 - 199)
• List of former Maryland state highways (200 - 399)
• List of former Maryland state highways (400 - 499)
• List of former Maryland state highways (500 - 599)
• List of former Maryland state highways (600 - 699)
• List of former Maryland state highways (700 - 999)