Rapid Urban Bridge Dismantling in Hong Kong: KET-JS-250 Jack-Up System & SPMT Integration

2026-04-13

A wide shot of the KIET KET-JS-250 Jack-Up System and SPMTs synchronously transporting a pedestrian bridge section at night in Hong Kong.

Project Overview

In the heart of Hong Kong’s dense urban landscape, a critical infrastructure upgrade required the rapid and safe removal of a pedestrian overpass. Facing extreme space constraints and a strict timeline to minimize traffic disruption, the project team utilized the KET-JS-250 Jack-Up System in combination with Self-Propelled Modular Transporters (SPMT). This "Smart & Green" method allowed for the bridge components to be lowered and transported with surgical precision.

The Challenges

KET-JS-250 and SPMT operating with precision in a confined urban space under an overpass during a night operation in Hong Kong.

Ultra-Confined Space:The construction site was located in a high-density area where traditional large-scale cranes could not be deployed.
Traffic Pressure:As a major thoroughfare, the window for road closures was extremely narrow, requiring a "fast-in, fast-out" execution.
Strict Safety Standards:Hong Kong’s regulatory environment demands rigorous safety protocols, especially for overhead lifting and lowering operations near public infrastructure.

The Solution: KET-JS-250 + SPMT

A crane lifting a yellow KIET KET-JS-250 Jack-Up System module onto an SPMT with the Hong Kong Central skyline in the background.

To meet these challenges, KIET provided the KET-JS-250 Jack-Up System, a multi-point synchronous lifting/lowering solution.

Synchronous Lowering:The KET-JS-250 system provided the stability required to slowly and safely lower the massive pedestrian bridge sections onto the SPMTs.
Low-Carbon Efficiency:The automated stacking logic of the KET series reduces the need for heavy auxiliary machinery, aligning with the project's "Low-Carbon" goals.
Versatile Integration:The KET-JS-250 is designed for seamless synchronization with SPMTs. While the Jack-Up system handles the vertical movement (lowering), the SPMT manages the horizontal transport, making it an ideal "kit" for bridge removal in restricted urban environments.

A crane lifting a yellow KIET KET-JS-250 Jack-Up System module onto an SPMT with the Hong Kong Central skyline in the background.

Proven Versatility

This was not the first time this equipment combination delivered exceptional results. Previously, the same client successfully utilized the KET-JS-250 and SPMT pairing to dismantle crane runway beams in a steel plant, proving the system's reliability in both civil infrastructure and heavy industrial environments.

The Results

Efficiency:The pedestrian bridge was removed ahead of schedule, significantly reducing the duration of traffic diversions.
Safety:The project achieved zero incidents, thanks to the inherent stability and precise control of the KET-JS-250 system.
Sustainable Execution:By choosing a Jack-Up and SPMT method over traditional methods, the client minimized the project's environmental footprint.