How Galloping Gertie's collapse left us a lasting design legacy. Not surprisingly, the concrete and steel of the center span that now lay on the bottom of the Narrows was deemed a total loss. The ...

The Washington State Department of Transportation serves people in every community, economic class and cultural group throughout the state. As such, we will meet our mission and vision only when the ...

Abutment – A substructure element supporting each end of a single span or the extreme ends of a multi-span superstructure and, in general, retaining or supporting the approach embankment. Anchor span ...

Tacoma Narrows Bridge history - Bridge timeline Spanning Time: A Chronology of Tacoma Narrows Bridges History 1792 On May 20th, Archibald Menzies, botanist with the expedition of Captain George ...

FHWA is charged with the broad responsibility of ensuring that America's roads and highways continue to be the safest and most technologically up-to-date.

Look here for the "nuts and bolts" of design, construction, and operations. How did they build the 1940 and 1950 Narrows Bridges? What are the parts of a suspension bridge? What architectural ...

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Whether you’re commuting, road-tripping or driving commercially, we have information to help you plan your route. See real-time alerts, live cameras, current travel times, and bridge and road ...

In Puget Sound the archaeological record begins about 9,000 years ago. Along the shoreline of the sound, many sites have been identified. Villages were typically located along rivers or marine ...

To view available drawings for a specific state route, click a state route shield on the map below or choose the state route from the dropdown list. Use the "zoom out" to return to the whole state map ...

The decision to build the Tacoma Narrows Bridge took a long time and deciding what type of bridge to build was a complicated process, due to the various bridge styles available and the costs ...

Here you will find the Northwest Region Highway Log. The years listed below correspond to the NW region and the state routes that run through it. You can choose a different WSDOT region at the bottom ...