The Mukilteo ferry terminal will temporarily close for three extended weekends this spring for extensive preservation work. Riders of the Mukilteo/Clinton ferry route should begin making alternate travel plans now. The Washington State Department of Transportation (WSDOT) will close the Mukilteo Terminal Friday through Sunday on March 18-20, March 25-27 and April 1-3. During the closures crews will work on the transfer span and apron that link the vessel and the dock, replacing mechanical and electrical systems that operate these movable components. “This work is vitally important to the safety of the Mukilteo terminal,” said David Moseley, assistant secretary for WSF.