Fixing a Settled Bridge Approach — Under-Slab Void Filling with Polyurethane, Overnight, No Closure

The "bridge approach" is the joint where a bridge meets the road — a spot that often settles because the backfill behind the abutment consolidates, creating a step and a bump as vehicles pass, affecting both safety and ride comfort. URETEK fixes this with polyurethane injection to fill the voids beneath the approach slab, with no bridge closure.

🌉 The Problem: A Settled Approach and a Bump at the Bridge End

The backfill behind the approach subsides, creating voids beneath the slab; the slab settles out of line with the bridge, and vehicles bump as they cross. Left alone, it worsens and spreads.

🌙 Overnight, No Bridge Closure

The crew works overnight when traffic is light, closing only the necessary lanes with cones and signs — no full closure — and reopens the surface quickly.

💠 Polyurethane Injection to Fill Voids & Re-Level

Small holes are drilled through the surface and polyurethane resin injected beneath the slab; the resin expands to fill voids, compact the backfill, and bring the slab back in line with the bridge — with no resurfacing.

✅ The Result: A Smooth Joint, No More Bump

The approach lines up with the bridge again, vehicles cross smoothly with no bump, and the surface carries load immediately — ideal for bridge and flyover work that must keep traffic flowing.