Tacoma Narrows Bridge History Website
Tacoma Narrows Bridge resources


The Bridge as a Connection

Why were the
bridges built?

The Bridge as Machine

How did they
build the bridges?

The Bridge as Art

Why do the bridges
look like they do?
  People of the Bridge
Who designed
the bridges?

A Tale of Three Bridges - 1940

"Galloping Gertie" - This First Narrows Bridge

Caisson in tow.

Caisson in tow. Before towing out the caissons, anchors (large concrete blocks) were towed to the appropriate location and dumped - shoved off - barges. Here, the first section of the pier, the hollow caisson, was towed into place. To hold the caisson in position, divers secured it to the anchors on the seabed. Creating the pier was a gradual process, building up with steel and concrete onto the caisson. Slowly, the pier "grew" upward and sank downward.

<-- Back to 1940 Panel

  Copyright WSDOT © 2005

    Traffic & Roads | Search | Contact WSDOT | WSDOT Business | WSDOT Home