The replacement of the SR520 bridge across Lake Washington is being undertaken in stages.  The main floating bridge element has been completed and now they are working on the next section through to Portage Bay.  Traffic from the old lower eastbound section has been diverted up on to the new westbound section while a new eastbound bridge is built.  Driving across the bridge you get to see some serious construction hardware.  However, you can’t photograph it while driving.

A bike ride took alongside the construction site so I was able to stop and get some photos with my phone.  The large lifting structures are actually running on top of a temporary bridge built just for them.  These will lift the new bridge sections in to place and allow the construction of the new eastbound section to be done.  I’m not sure of the schedule for completion of this work but, once it is done, it will just leave the last phase to I-5 to be done.