Another image of Thompson Bridge 2007

This old bridge across Baker River in Concrete, WA. was once the longest concrete arch span in the world.  Built 1916-1918 it is now on the historic register.  Called the Henry Thompson Bridge. 

Most traffic flows farther down stream across the Highway 20 bridge that was built in 1972.

Old silos from Concrete's dam building heydays.  Upper Skagit River dams.