Ever Wondered Why Cars Must Wait For Boats at Seattle-Area Bridges? (Northwest Hub)

From our partner land use, transportation and environmental site, Northwest Hub:

Photo by charliekwalker, Flickr CC

The water surrounding Seattle is picturesque, but it can make for tedious driving—especially when cars must wait at bridges for ships to pass underneath. 

Have you ever wondered why a long line of cars must wait for a single sailboat or two at bridges