The first new State Rte. 520 bridge pontoon is on its way to Lake Washington. Crews began towing the pontoon from Grays Harbor at 9 a.m. Aug. 8 and expect to complete the journey to the Hiram M. Chittenden Locks in Seattle on Saturday, Aug. 11. The pontoon is expected to enter the locks late Saturday night or early Sunday morning.
The tugboat towing the pontoon can be tracked online by searching for vessel “Peter M.” The total distance from Grays Harbor to Shilshole Bay is approximately 260 nautical miles.