Maryland Code, Transportation § 8-302

(a) The Administration may acquire for this State, by condemnation under Title 12 of the Real Property Article or by lease, agreement, gift, grant, purchase, or otherwise, any private property for any public purpose that it considers necessary or desirable to perform the duties imposed by this title or for any other purpose authorized under this title.

(b) On behalf of and at the request of the Administration, the State Roads Commission may exercise the authority vested in it by Article III, § 40B of the Maryland Constitution and acquire for this State, by condemnation under Part III or Part IV of this subtitle, any private property for any highway purpose.