List of Interstate Highways in Washington
Interstate 90 (I-90) is the longest primary Interstate Highway in Washington, which connects Seattle to Spokane and the Idaho border, measuring , while I-82, connecting the Oregon border city of Umatilla to Elensburg via Yakima, is the shortest at . The longest auxiliary Interstate Highway in Washington is I-405, a bypass of Seattle through the Eastside, at , and the shortest is I-705, a spur into downtown Tacoma, at . One route, I-605, has been proposed over the years to form another Eastside bypass, however there are no plans to construct this fifth auxiliary route.
After passage of the Federal Aid Highway Act of 1956, which formed the Interstate Highway System, the American Association of State Highway Officials had approved I-5 and I-90 across Washington on August 17, 1957. I-82 was approved on October 17, 1957, two months after I-5 and I-90, as part of a addition to the Interstate Highway System.
U.S. Route 206
U.S. Route 206 (US 206) is a north–south United States highway in New Jersey and Pennsylvania, United States. Only about a half a mile (800 m) of its length is in Pennsylvania; the Milford-Montague Toll Bridge carries it over the Delaware River into New Jersey, where it is the remainder of the route. The highway's northern terminus is near Milford, Pennsylvania at an intersection with US 209; some sources and signs show an overlap with US 209 to end at its parent route US 6. Its southern terminus is in Hammonton, New Jersey at an intersection with Route 54 and US 30. For much of its length, US 206 is a rural two-lane undivided road that passes through the Pine Barrens, agricultural areas, and the Appalachian Mountains of northwestern New Jersey, with some urban and suburban areas. The route connects several cities and towns, including Bordentown, Trenton, Princeton, Somerville, Netcong, and Newton. The road is known as the Disabled American Veterans Highway for much of its length.