Coast Guard Seeks Comment on Navigation for Portage Bay Bridge

The SR 520 Portage Bay Bridge and Roanoke Lid Project consists of replacing the aging Portage Bay Bridge with two parallel bridges for eastbound and westbound traffic. Photo via Washington State Department of Transportation.

The U.S. Coast Guard is asking the public, and mariners in particular, to weigh in on navigation at Portage Bay Bridge in Seattle.

The agency has issued a public notice for Washington Department of Transportation’s request to replace the bridge near Lake Union and is looking for vessel and facility owners and operators and others in the maritime community to discuss navigation needs that the proposed bridge project should meet.

“This includes but is not limited to mariners’ requirements for horizontal and vertical navigation clearances, placement of bridge protective systems, bridge lighting systems and various other safety measures,” the agency said in the notice.

The public has until March 24 to provide feedback. The public notice can be viewed at

Comments should be sent to the office of the 13th District Commander either by email at or mailed to Commander (dpw), Thirteenth Coast Guard District, 915 2nd Ave, Rm 3510, Seattle, WA 98174.

By Karen Robes Meeks