Photo courtesy of Washington State Archives

Anyone who has traveled across the scenic North Cascades Highway (SR 20) knows how long and beautiful it is. Just imagine how difficult it was to construct it.

Opened in 1972, the highway that connects the Skagit Valley and Methow Valley took decades to build through this remote part of Washington. This 1968 photo shows one of the highway bridges being constructed.

October is Washington Archives Month. Go here to learn more about Archives Month events, or to view and download a PDF of the 2010 poster as well as previous posters.