🛣️ Mount Baker Tunnel

The Mount Baker Tunnel or Mount Baker Ridge Tunnel carries Interstate 90 and Link light rail's 2 Line under the Mount Baker neighborhood of Seattle, Washington. It is actually a group of three tubes that carry eight lanes of freeway traffic, plus a separate path for bicycles and pedestrians, and two tracks for Link light rail. The original tubes are twin tunnel bores completed in 1940 and rehabilitated in 1993. The new Mount Baker Tunnel was built north of the original tunnels and opened in June 1989. The tunnel has a double-decked roadway with the bicycle/pedestrian path above the traffic lanes.