Though one user pointed out that no bridge is ever seen or mentioned, the fallen pine tree over the creek serves as the titular "bridge" that the children cross to get to the shed (or "castle") they have built in the woods, where their imaginary world of Terabithia also takes place.
After Jess finds out that Leslie died Julian Coutts forgets his line. Somebody off camera can be heard saying, "You lie." Jess finally says, "You lie."