This is an old-fashioned flat, wooden bridge that measures 175 feet long and 24 feet wide. The measurement between the floor to the bottom of the supports is 30 feet.
The package includes a game-ready mesh of the original (28K vertices) and a second game-ready mesh that is only 100 feet long (13K vertices). The game-ready versions do not have materials applied and must be added in whatever game engine you are using.
Disclaimer: Although the FBX and OBJ exporters in Blender generally work fine for meshes, they are not Blender's native file formats. Some material adjustment may be needed in the program you are using. For any questions, feel free to contact me.