Under Armour unveils plan for visitor center, skywalk in Locust Point

Under Armour Inc.’s campus expansion plans got a boost on Thursday, as a city design panel approved initial plans for the Baltimore sportswear maker to add a new visitor center, skywalk and refurbished bridge in Locust Point.

The proposed visitor center would include a small retail store, wooden floors modeled after a basketball court and a wall featuring images of Under Armour athletes and products displayed on an LED screen. But the exterior of the building — at Key Highway and Hull Street…