Madison Street is a major thoroughfare of Seattle, Washington. The street originates at Alaskan Way on the Seattle waterfront, and heads northeast through Downtown Seattle, First Hill, Capitol Hill, Madison Valley, Washington Park, and Madison Park, ending just east of 43rd Avenue East on Lake Washington. From Broadway to Lake Washington, the street is known as East Madison Street, which accounts for most of its length. It is the only Seattle street that runs uninterrupted from the salt water of Puget Sound in the west to the fresh water of Lake Washington in the east.
Many notable buildings are located along the street, including the Seattle Central Library and numerous hotels such as the Sorrento Hotel. For most of the run from Broadway to 12th Avenue, it forms the northern boundary of the Seattle University campus.
A cable car line provided public transporation along all or part of Madison Street from 1890 to 1940. It was constructed and operated by the Madison Street Cable Railway company. The original powerhouse, which powered the cables running under the streets, was located between 21st and 22nd Avenues, and the service was operated as two separate lines—west from the powerhouse to downtown and east from the powerhouse to Madison Park on Lake Washington and, together, the two lines served the entire length of Madison Street.