CASE STUDY
Bridge Approach Lift & Stabilization
Re-Creating a Safe Transition Without Full Reconstruction
EXPLORE
PROJECT OVERVIEW
Re-Creating a Safe Transition Without Full Reconstruction:
Location:
Bridge Approach – High-Traffic Transportation Route
Service Type:
Structural Lifting & Soil Stabilization
Method:
Hydraulic Jacking + Polyurethane Injection
Material Used:
19.5 m³ High-Density Polyurethane
Over time, the bridge approach experienced significant settlement where the roadway meets the bridge deck. While the bridge remained structurally supported on piles, the hinged approach slab had dropped beyond its intended range. This created a harsh elevation change resulting in a noticeable “jump” for vehicles and increased stress at the joint.
With this being a high-traffic route, shutting down the bridge for traditional reconstruction was not a viable option.
The Challenge
The settlement created a sudden elevation change that increased vehicle impact stress and posed a safety hazard for daily traffic.
The Solution
We implemented a targeted lifting and stabilization strategy using:
The slab was carefully lifted in a controlled sequence to re-establish the correct elevation at the bridge hinge point. Once aligned, high-density polyurethane was injected beneath the slab to:
Material Used:
19.5 cubic meters of polyurethane
Restored correct elevation at the bridge hinge point while permanently stabilizing the subgrade beneath the slab.
BEFORE
AFTER
Execution in the Field
The Results
A critical transportation route was restored to safe, reliable service without full demolition or reconstruction.
Why This Solution Worked
Project Impact
This project demonstrates how precision lifting and polyurethane stabilization can solve complex infrastructure settlement issues quickly and safely—keeping essential transportation routes open while delivering long-term structural performance.