Our Construction

Shitsumi Dam Shitsumi-ohashi Bridge

Ministry of Land, Infrastructure, Transport and Tourism, Chugoku Regional Development Bureau

This is a 5-span continuous composite truss bridge which integrates a composite truss bridge comprised of concrete upper and lower floor slabs and steel web (steel pipe) with PC box girders in a continuous bridge structure.

This was the fifth composite truss bridge to be constructed in Japan and the first in Japan to have this sort of variable cross-section structure, as well as the first in the world to integrate it with PC box girders into a continuous structure.

Because of this, stress measurements were taken at various spots during construction, along with actual loading tests conducted upon bridge completion, thus ensuring during construction that performance and safety requirements were being met.