1. PC beam can be lifted from either behind or sides of bridge deck.
2. Main truss is able to move forward/backward with PC beam carried
3. Flexible skew of main truss for big angle between viaduct centerline and pierhead centerline
4. PC beam can be lifted by 2 nos. cylinders on one side of main truss when there is no space for main truss side-shifting to normal lifting position
5. Rear and front legs are movable along main truss to adapt various span lengths