Definition: The IABSE Outstanding Structure Award (OStrA) was established in 1998. It is one of the highest distinctions awarded by IABSE and recognises, in different regions of the world, some of the most remarkable, innovative, creative, or otherwise stimulating structures, but not necessarily the largest, longest, highest, or otherwise record-breaking structures. Sustainability and respect of the environment is also an important factor.
to the Executive Committee
at least once every year