Manuals play a key role in disseminating the trail bridge technology (survey, design and cost estimate) and its implementation modalities. It also help to standardized the processes and approaches of trail bridge program. SIXTEEN of such manuals and guidelines are already developed and is in the use by the trail bridge building agencies. These manuals have facilitated the process of devolution of trail bridge program to the local bodies. As the trail bridge program is slowly evolving as a sub-sector, a couple of more new manuals/guidelines are already in the developing stages. It is expected that these efforts will help streamline the trail bridge sub-sector programs in the country as a whole.