crossing the bridge 

A way to describe how high an individual is or will be after smoking weed or taking shrooms and or acid.

1) Dude, I've smoked soo much I feel like I'm crossing the bridge man.
2) Man I haven't smoked in a minute, can't wait to cross the bridge tonight.

crossing the bridge by Yaboiben November 6, 2015

crossing the salt bridge 

a bridge you cross to take you to the salty side.

susan crossed the salt bridge when she wasn’t elected for student body president.

sean cried while crossing the salt bridge after vanessa rejected his promposal.

crossing the salt bridge by mediocre effort May 21, 2018

crossing the humber bridge

Similar to crossing the Delaware, (i.e. oral sex going between vagina and anus) but more locally defined as going from the fishy bit to the shitty bit.

My husband obviously likes driving at work, he always tells me how much he enjoys crossing the Humber Bridge several times a day.

crossing the humber bridge by Rab54 December 10, 2017