Cantilever forming traveller is widely used for the construction cast-in-site and balanced cantilever  bridges. Cantilever forming traveller is the main equipment in cantilever construction. According to the structure, they can be divided into four types: truss type, diagonal type, channel steel type and hybrid type. 

As per the requirements for cantilever construction and design drawings, comprehensive comparison of various cantilever forming travellers shall be done for their characteristics, weight, steel type, construction technology, etc. The principles of designing are to make them light-weighted with simple structure, firm and stable, easy to move forward, assemble and disassemble, with strong reusability, small deformation after loading, and sufficient space for operation under the traveller, and easy for rebar working.