An Unexpected Day

An Unexpected Day is the first/pilot episode of The Power of True.

Plot
Season 10 got interrupted by an event called The Power of True. The Numberstairs cast's government puts the characters in teams.

These are the teams:

Infi-team: Infinio, Kikath, Josh, Leon, Dorito, True, Arif, QHA, Liyty-One, Cherry

I am a Square: Oggy, Punchcar, Zerin, Rebecca, Kathki, AHT, 64Bat, Iguansquare, Ogguare, Anagrammy Square

Crazy Shapes: Anika, Twarkly, Chico, Nickel, PandaBlock, Jelly, Stephen, Book, Rebe, Pinkty

Elimination P.A.C.T.: Tetraa, Sam, Price Tag, Emily, Butter, Basar, Big Red, Pixel, Mak, Noni

Zooming Zebras: Celtic, Eight-Diego, Stik, Atomu, Yoyle, Scrambly, MDZ, Nolan, L51ra, Blueblock

Tablecross: Cure, Cekoblox, Melony, Rectangl'r, Gaty, Lizzy, Firey-Six, Terra-Cotta, Haystack, Steppy

Irrationals: Pie, Pythagorsquaroot, Theodore, Edward, Ethan, Tommy, Robot Rho, Goldielocks, Twoldielocks (2 lots of phi (the golden ratio)), Circluare

What Should our Name Be?: Toxy, Bl48ki, Cloudy-Five, Duckty-Four, Scalfred, Ruby, Qwerty-One, Stellacore, Arthur, Nokyoob

Lovelyblocks: Yearblock, Soser, Sixty Robot, Amigo, Catyeah, Icedraw

Challenge
To cross the 1 kilometer-long bridge.