More than a decade before engineers began planning a bridge across the Tacoma Narrows, Tacoma was building the longest transmission line span in the world over the same channel. The Cushman Dam electrical project required spanning 1.3 miles between two sets of 300-foot-high towers in the city.
More than a decade before engineers began planning a bridge across the Tacoma Narrows, Tacoma was building the longest transmission line span in the world over the same channel. The Cushman Dam electrical project required spanning 1.3 miles between two sets of 300-foot-high towers in the city. Washington State Historical Society Courtesy
More than a decade before engineers began planning a bridge across the Tacoma Narrows, Tacoma was building the longest transmission line span in the world over the same channel. The Cushman Dam electrical project required spanning 1.3 miles between two sets of 300-foot-high towers in the city. Washington State Historical Society Courtesy

Tacoma lost more than just a bridge the day Galloping Gertie fell

November 06, 2015 4:08 AM

More Videos

  • An underground drone flight from the Space Needle to CenturyLink Field

    Now that the tunneling machine Bertha’s work is complete, it’s possible to fly a drone with a video camera from end-to-end inside Seattle’s SR 99 tunnel. In two minutes, you’ll see two miles of ongoing construction work. The upper roadway of the tunnel’s double-deck highway is more than 85% complete. Up next? Installation of the lower roadway, and all the systems it takes to operate a modern tunnel. Video courtesy of WSDOT.