MD 156 provides access to the Harford County Airport in the unincorporated community of Aldino.

MD 156 heads east as a two-lane undivided road through farmland.

The state highway provides access to the Harford County Airport in the hamlet of Aldino and intersects Chapel Road, which heads south toward Havre de Grace and passes the historic homes Chestnut Ridge and Winsted.

[1][2] MD 156 follows the path of the old Bel Air Road from Havre de Grace.

[3] The state highway was repaved in macadam starting from the west end in 1921 and completed east to Webster in 1922.