Summary: The notes herein illustrated the application of pipe roof/arch method of constructing circualr or rectangular/any shaped box culvert structures. These notes covered various considerations in the planning/design and construction of such works. The pipe roof/arch method involves the use of microtunnelling /jacking / other trenchless machine to install a series of interlocking steel pipes which formed a temporary support system , below which the final section of the box culvert structures is then mined and constructed .Problems encountered and instrumentations issues were also mentioned . Date