SLJ900/32

The SLJ900/32 as aforementioned, is 91 metres (299 ft) long, 7 metres (23 ft) wide, 9 m (29 ft 6 in) tall and weighs around 580 tonnes (640 short tons).^[4] Compared to conventional cranes which require clear land and are typically only able to lift a few meters of bridge material per-lift, the SLJ900/32 is capable of lifting an entire large segment of bridging material (some of which weigh around 800 to 950 tons) in a relatively compact manner without the hassle of interference such as trees or rocks.^[5]

Construction process is done via the vehicle picking up a new pre-cast section of concrete underneath its "belly" and carrying it all the way from the very edge of the bridge to the installation point, where it will be connected to a predetermined pillar.^[4][6] Then, using a pneumatic structure, the machine is moored to the first pillar to extend to the second one, anchoring to it, and places the beam.^[4][3] The process would repeat itself until the bridge's foundations are completed.

The vehicle moves on a large 64x wheel drive system, which in itself is divided into four sections of 16 wheels each (forming two trucks, one at each end).^[4][1] Each of the sections can rotate up to 90 degrees allowing the machine to drive sideways for efficiency when picking up beams.^[6] The vehicle can maintain a top speed of 8 km/h (5 mph) unloaded, and 5 km/h (3 mph) carrying a bridge segment.^[7]

Each vehicle's operational life is capable of building up to 730 spans before retiring.^[6]

• Launching gantry