Final 520 Pontoons to Arrive Thursday!

If you are crazy enough to actually want to track the arrival of pontoons to the new 520 bridge project online – here are the links. These are the last 3 pontoons. In addition, WSDOT is running a photo contest about pontoons. Here’s the link.

The journey from Grays Harbor is nearly complete and we expect the final three SR 520 pontoons to arrive on Lake Washington tomorrow, Thursday, April 9.

Below is a table indicating estimated arrival times for each pontoon and a link to where you can track their location as they arrive on Lake Washington. Please note, actual arrival times may vary due to towing conditions.

Pontoon Estimated time of arrival at

Hiram M. Chittenden Locks

3015 NW 54th St.

Tugboat tracking link
Pontoon G 9:30 a.m. Tugboat Mudcat
Pontoon H 12:30 p.m. Tugboat Nancy M
Pontoon F 2 p.m. Tugboat Solana

Author: Ross

I am the Director of the Department of Early Learning for Washington State. I formerly represented the 48th Legislative District in the State House of Representatives, chairing the Appropriations committee and spent many a year at Microsoft.

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