Originally Posted by
chococat
Getting from Seattle to Redmond is always a bit of a hassle since it involves crossing one of the floating bridges, which are almost always congested. Also, the Blue Angels are in town for SeaFair and will be doing some practice runs over the lake, so I-90 will be shut down intermittently-- highway 520 (to Redmond) remains open, but gets backed up with the diverted traffic.
Coming from the airport you just go on 405 to Redmond. There is no reason to cross the lake. Also since the OP is travelling on Wed. there is no Blue Angel practice or closures.
Using mass transit to get from SEA to Redmond sounds like a lot of work. Have you checked into
Shuttle Express if cost is an issue?