So this little troll was built out of the scrape the iron workers took from the carnage left behind from the 1989 quake. They took it to a blacksmith and he made this troll which they attached to the old bridge. So there is your gargoyle Dana.I really love the juxtaposition of the old and new here.
Also the engineering for the new bridge is quite amazing as far as durability from quakes and such. In answer to attacks the old bridge actually with stood two plane crashes one from a navy plane and the other i can't remember. but i have full faith in the new bridge. the bike lane, well only will go as far as yerba buena island do to the traffic of the cargo ships on the san francisco side...whatever...at least that was there answer. also underneath the new bridge they have installed perches for migrating birds...good ol california...anyway all in all the people from caltrans were really cool and very informative...the experience was really inspiring. it would be awesome to do it again. im going to look into seeing if i can set up a tour if i can get at least 20 people who are interested. so let me know if you want to see the bridge.