For years, there was no easy or cheap way to move logs, coal, and other resources directly from the east side of Lake Washington to Elliott Bay. There were many plans and several attempts to build a canal via Lake Union. However, none was successful until the Lake Washington Ship Canal was built.

Ground was broken for the Lake Washington Ship Canal locks in 1911, and the first concrete was poured for the lock chambers in 1913. They were completed in 1917.

The Hiram Chittenden Locks are still a vital part of the canal's operation. They allow boats and ships from Lake Union and Lake Washington to be lowered to the level of Puget Sound. Those traveling the other way are raised to the level of the lakes.

Note from MOHAI records: Beginning construction of locks, ca. 1913.
Handwritten on sleeve: Pan - Ballard.
Photographer's Reference Number: 5742