Ala. Code § 11-49-100

Whenever in the judgment of the council or other governing body of any town or city it is to the interest of the public convenience that a portion of any street in the limits of such city or town be vacated and discontinued as a highway and that such vacated portion should be used for the erection and maintenance in whole or in part thereon of any state, county, or municipal public building or railroad station or depot or street railroad station or depot, such city or town council or other governing body may, by ordinance duly adopted, vacate such portions of such street and discontinue its use as a public highway and permit the erection and maintenance in whole or in part thereon of a state, county, or municipal public building or railroad station or depot or street railroad station or depot.