Abstract:
The development of roads and highways related infrastructure has picked up significantly in
the recent times along with a significant increase in the vehicle ownership and also the number of larger
and heavier vehicles on the road network. With the proposed expressway system being gradually
completed, a new requirement has risen. It is the need to come to the capital of the country, Colombo,
with a reasonably short time once a vehicle leaves the expressway. Since the roadside developments
are high and the land acquisition for new roads would be difficult, one option is the use of elevated
expressways constructed above the existing highways. This paper presents some structural aspects
that can be effectively used to create a well planned and robust elevated highways banking on the
experience on design and construction of existing elevated structures that have been built in recent
times in Sri Lanka.
