 Northwest traffic from the High Performance Homes Traffic Center. Seattle, the on-ramp from Mercer Street to I-5 is blocked due to construction, so seek alternative routes. DuPont, seeing some congestion on I-5 southbound due to road work in the area. The on-ramp from Steilacoom to DuPont Road and the off-ramp to Center Drive are currently closed. West of Tiger Mountain, westbound 18 is closed between Issaquah Hobart Road and Raging River due to pavement repairs. Now let's take a look at drive times. Bellevue to Seattle, you've got a travel time of 15 minutes via I-90.