CMSP&P Whittier Tunnel 49

The Chicago, Milwaukee, St. Paul and Pacific Railroad stretched from Chicago to Seattle. Their mainline was 2,200 miles long and included 51 tunnels. These were numbered from 1 in Wisconsin to 52 in Washington State (38 and 39 were never built, and 16.5 was added later). The CMSP&P was merged into the Soo Line Railroad at the end of 1985. Including the branch lines, there were a total of 64 tunnels on the Milwaukee Road, of which 8 remain in use.