Poly Bridge 4-9 !free! -

The level requires both vehicles to cross simultaneously or in sequence depending on your pathing, but most vanilla solutions require the dump truck to go first to flatten the bridge for the sedan.

Build a long support arm using a mix of Wood (to save budget) and Steel (for critical stress points). poly bridge 4-9

If you are over budget, replace non-essential steel with wood. Wood is significantly cheaper ($180/m vs $450/m) but has less resistance. The level requires both vehicles to cross simultaneously

If you build it right—with steel cables pulling from below, wood triangles bracing the flat span, and gentle inclines for the heavy truck—you will watch the dump truck roll slowly, safely across. The sedan will zip over the top. The "Success" banner will flash, and your budget will still have $1,200 left over. Wood is significantly cheaper ($180/m vs $450/m) but

Poly Bridge is a game of learning through failure. Level 4-9 serves as a brutal, beautiful teacher. It forces you to abandon the fantasy of the elegant, sweeping suspension bridge and accept the reality of the messy, triangulated, functional truss.

Level 4-9, often nicknamed "The Twisted Trench" by the Poly Bridge community, is where the game stops holding your hand. This level is not just about getting from Point A to Point B; it is about understanding the specific physics of tension, compression, and the dreaded "Bouncing Death Spiral."