Poly: Bridge 4-9

Use wood for the majority of the support structure and save steel only for the highest-stress joints.

If your road is still sagging, look to the skies. poly bridge 4-9

Are you aiming for a record or just trying to pass with under 100% stress ? Use wood for the majority of the support

To beat level 4-9, players generally use one of two main approaches: and load transfer—without opening a textbook.

Level 4-9 is a perfect example of why Poly Bridge transcends the typical puzzle genre. It forces the player to intuitively grasp civil engineering concepts—tension, compression, and load transfer—without opening a textbook.