Cap Sante Lookout instead (which I would have brought Amy to see but had completely forgotten about it at the time).
Here are some pics of us from the east side lookout.
There are stairs and pathways built underneath the bridge so you don't have to cross to the other side in oncoming traffic. We saw people ignoring these since it's much faster to just walk across two lanes than to go up and down two flights of stairs, but they're missing many awesome photo opportunities in addition to putting themselves at risk. We crossed to the east side, walked down the length of the bridge, and then came back on the west side.
Oscar and I took one of those back in 2011.
One we'd reached the end of the bridge, we took a short hike down to the beach in
Deception Pass state park. Amy couldn't resist being on the coast yet not getting her feet in the sand, even if it was full of rocks.
She also insisted on putting her foot in the Pacific Ocean, though she was less than thrilled with the temperature of the water. :)
And our lovely view walking back along the west side of the bridge!