Viaduct (image) University of Washington Share Print E-Mail Caption The Alaskan Way Viaduct is slated for demolition for seismic reasons. Credit Washington State Department of Transportation Usage Restrictions With credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.