E Marginal Way S and its twin across the Duwamish Waterway, W Marginal Way SW, are good examples of purely descriptive Seattle street names. In fact, they are first mentioned in the press as adjective + noun, not name + type:
- “Marginal ways are urged for both sides of Duwamish waterway.” Seattle Post-Intelligencer, October 27, 1911, in reference to the Bogue Plan
- “Coincident with the completion of the Duwamish waterway and the wide marginal streets on each side, a publicly owned railway should be built along these marginal ways…” C.C. Closson, realtor and the Port of Seattle’s first paid employee, in a letter to the editor, Seattle P-I, July 8, 1912
- “East and west marginal ways, planned by Bogue to parallel the waterway to give railroads, street cars and other transportation facilities access to the Duwamish waterway, will both pass through Oxbow.“ The Seattle Times, March 26, 1914
- “Marginal ways parallel the new waterway for the whole distance, connecting with the main streets of the city running to the south.” Seattle P-I, August 13, 1914
A longer excerpt, from an article in the April 19, 1914, issue of The Seattle Times, explains the reason for their creation:
Second only in importance to the waterway are the projected traffic streets, east and west marginal ways, laid out on both sides of the waterway about 1,000 feet back to give railways and street car lines the opportunity to parallel the waterway on both sides for its entire length, to give service to the industries locating along the waterway. As an allowance of $175,000 was made for East Marginal Way in the $3,000,000 county bond issue for roads, that street is now being condemned by the city and will be constructed 130 feet wide to the south city limits, where it will join a county road. West Marginal Way is also being promoted by interested property owners. As the existing railways are already but a short distance east of the Duwamish River, spurs can be thrown into East Marginal Way at slight expense. Also the port commission is considering a plan for port district terminal tracks on the Marginal Ways to serve the waterway.
The Duwamish Waterway, whose construction began on October 14, 1913, was a straightening and deepening of the last 6 miles of the formerly meandering river. Construction of the waterway, with Harbor Island at its mouth (the largest artificial island in the world from 1909 to 1938), plus the filling of the Elliott Bay tidelands, are what give Seattle’s harbor its modern shape.
E Marginal Way S begins as an extension of Alaskan Way S — originally Railroad Avenue, which served much the same function for the central waterfront — at the Port of Seattle’s Terminal 30, and stretches 4⅖ miles from there to the southern city limits. (From the southern end of the Alaskan Freeway to the northern end of the 1st Avenue South Bridge, it carries Washington State Route 99.) Beyond there it runs 3½ miles more to S 133rd Street in Tukwila.