Bridge Constructor: Portal is a puzzle game in which the player must construct bridges. The player can use steel bars and cables to build it. To complete a level a forklift truck must pass from the start of the level to the end and to perfect a level a whole convoy of forklift trucks must pass.
Like previous games in the Bridge Constructor series a physics model governs whether a bridge will collapse or not. Unlike previous games this game is set in the Portal universe. Various elements of those games make an appearance, such as portals, the companion cube, GLaDOS, Buttons, Turrets, faith plates, etc. Puzzles revolve around using or avoiding these elements to reach the exit.