Mount Baker Ridge Tunnel
About this property
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 (or four—if counting the two original Mount Baker Tunnels separately) 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. The tunnel was listed on the National Register of Historic Places in 1982 (ID #82004243). The east portals of the tunnel, with murals titled Portal of the North Pacific designed by artist James FitzGerald, along with the Lacey V. Murrow Bridge, are an official City of Seattle landmark. The official length is 1,440 feet (440 m), though the perceived length while driving is closer to 3,300 feet (1,000 m) because of a cut-and-cover "lid" between the western portal and the beginning of the actual tunnel under the Mount Baker ridge. The former west portal, now located well inside the tunnel, is no longer discernible and its two arch structures were removed during 1989–1993 modification work. The eastern end of the tunnel links to the Lacey V. Murrow Memorial Bridge and the Homer M. Hadley Memorial Bridge (collectively the I-90 floating bridge) on Lake Washington, to Mercer Island. At 63 feet (19 m) in diameter, it is the world's largest diameter soft earth tunnel, having been bored through clay.
Location
Categories
Property data from the National Register of Historic Places, National Park Service (public domain).
Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.
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Questions about this property
When was Mount Baker Ridge Tunnel listed on the National Register?
Mount Baker Ridge Tunnel was listed on the National Register of Historic Places on July 15, 1982.
What type of historic resource is Mount Baker Ridge Tunnel?
Mount Baker Ridge Tunnel is classified as a structure in the National Register of Historic Places.
What is the period of significance for Mount Baker Ridge Tunnel?
The period of significance for Mount Baker Ridge Tunnel is recorded as the industrial era.
Can I research the history near Mount Baker Ridge Tunnel?
Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near Mount Baker Ridge Tunnel will include this listing and all other historical records in the area.
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