Truss is a new map for Half-Life 2: Episode Two, entered in the VerticalVilleTwo level contest. In this contest, mappers had 18 days to build a map that made use of vertical gameplay. Truss is centered on something we have a lot of here in Portland – bridges!
You can play this by downloading the map pack and, if you enjoy it, please feel free to give it a vote.
And yes, it is a functional drawbridge, complete with counterweights! Custom models were also used for the bridge structure itself.