Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. U.S. Route 12 or
US 12 is an east-west United States highway, running from Grays Harbor
on the Pacific Ocean, in the state of Washington, to downtown Detroit,
for almost 2500 miles (4000 km). As a thoroughfare, it has mostly been
supplanted by I-90 and I-94, but remains an important road for local
travel. The highway begins in Aberdeen, Washington at an intersection
with US 101. Its eastern terminus is currently in downtown Detroit, at
the corner of Michigan and Cass Avenue. The western terminus of US 12 is
located in Aberdeen, Washington. In the 1960s, a portion of US 12 was
moved north to the town of Morton, when the Mossyrock Dam was built and
flooded the towns of Kosmos and Riffe, along the Cowlitz River in Lewis
County. A large portion of old, two-lane US 12 was replaced by
Interstate 82 and Interstate 182 in the 1980s, between Yakima and the
Tri-Cities, though the freeways are still cosigned with the US 12
designation
