Dont feel like you gotta keep up with a bunch of internet clowns, because they are probably lying anyway.
81 GI is really steep for the street. I roll @ 70GI and I have the Williamsburg Bridge at the beginning and end of my rides and its perfect... It works me but doesnt kill me. Theres no way I could do it and have any fun @ 80GI.
That bridge crossing looks beautiful... should be fun, not a near death experience!
Scrod... you seen this?
http://software.bareknucklebrigade.c...it.applet.html