In this paper,the principal construction techniques for the main arch of the bridge are briefly described,in which the segment precasting,cable crane installation and construction monitoring are included.

The construction of a reinforced concrete deck box arch bridge was carried out by segment precasting,cable crane installation and cantilever erection by the aid of stayed cables with the cables fixed by the anchors embedded in rocks.

The main parts of the approach bridges of Sutong Bridge are of twin prestressed concrete continuous girder bridges with spans each 75 m of constant cross sections and six lanes on the carriageways,and the superstructures of the parts of the bridges were erected by precast segmental assembling construction method.

The precast segmental construction technique is widely used in the viaduct structures for both vehicular and light rail systems.

Based on the practice and summary of Hu-Min Viaduct (II) construction in Shanghai by erecting prefabricated segments span by span, des-cription is made of the mechanism and way of computer-aided control (CAC) over the load transformation, a key step of workmanship.

Described hereby are the initial study and summary of the key measures and precautions taken during the construction of prefabricated segment span-by-span installation of Hu-Min Rd Viaduct (II), and Jungong Rd Viaduct (Contract A1.

The elevated bridge in the partial main line of Shanghai Humin Elevated Road Phase II Project used the prefabricated segmental erection construction technique by spans.

As a credible, economic and practical construction method, precast segmental construction has been widely accepted and utilized in the practical projects all over the world.

The method of precast segmental construction began to evolve 40 years ago.