Structural Assessment of ASSHTO Girder Bridge Overpass after Traffic Impact to Exterior Girder

Abstract

Bridges are essential structural components to a country to connect important cities, villages to develop the economic and social of the people. The objective of the investigation was to evaluate the bridge located in overpass under normal conditions and the immediate solution was to close the traffic lane next to the exterior girder and install a temporary concrete barrier to avoid traffic in the area affected due to the impact received in exterior girder. The evaluation of the bridge was made for inventory rating and operating rating in each girder. The bending moment and shear force was computed for inventory rating and operating rating. The bottom bending stress was made for inventory rating only. The rating calculations mentioned were realized under conditions and traffic lane closed with the temporary concrete barrier to be compared which girders were affected with loads redistribution. Key Terms – AASTHO Girder Bridge Overpass, Loads Redistribution, Rating Factors, Structural Assessment.