 They connect to State Route 202 to the north, providing access to Redmond, and Interstate 90 to the south in Issaquah.A regional freeway, Interstate 605, has been proposed several times since the 1960s to run through Sammamish, but has not been built.Bus service is provided by King County Metro routes 216, 219, 269, and Sound Transit Express route 554 to Redmond, Issaquah, and Downtown Seattle.