The Ballard Bridge, also known as the 15th Avenue Bridge, is a double-leaf bascule bridge in Seattle, Washington. It carries 15th Avenue NW over Seattle's Salmon Bay between Ballard to the north and Interbay to the south. The Ballard Bridge follows the Fremont Bridge in the east in the succession of bridges spanning the Lake Washington Ship Canal, which connects Lake Washington in the east to Puget Sound in the west.

Ballard is a neighborhood in the northwestern area of Seattle, Washington, United States. Formerly an independent city, the City of Seattle's official boundaries define it as bounded to the north by Crown Hill, to the east by Greenwood, Phinney Ridge and Fremont, to the south by the Lake Washington Ship Canal, and to the west by Puget Sound's Shilshole Bay. Other neighborhood or district boundaries existed in the past; these are recognized by various Seattle City Departments, commercial or social organizations, and other Federal, State, and local government agencies.