Identification of problems and challenges in application of concrete and masonry structures repair for the case of beko bridge b/n shishinda and bita wordea

Abstract

This case study work is undertaken to identify defects on beko bridge b/n Shishinda and Bita woredea in southern nations and nationality region, to evaluate seriousness of defects, challenges and problems in application of repairing. The bridge was selected by assessing bridge inventory data from Ethiopian Road Authority which is the most defected bridge in Kafa zone. The study is conducted to restore maximum strength of the structure to extend serviceability and durability of a bridge at minimum maintenance cost and with in short period of time without interruption of traffic flow, following identify defects prevailing on the structure, Identify proper material to repair each defects Conduct proper preparation work methods to restore the defect part material application procedure. The main purpose of the study is prevention of further progress of bridge defects, removal of damaged parts and restoration of section which needs regular inspection of bridge conditions not to incur high replacement cost and interruption of traffic flow. A descriptive case study was used in the design. It was attempted to collect data from Beko bridge defects by using simple tools local labor around the area to identify defect types and seriousness of the defect. Case study research design has been selected to collect each defect cause and analysis each defects causes. As shown form bridge repair identification problem and challenges on Beko bridge. Since bridges are vital structure to access the road, it is difficult to replace defected bridges not obstacle the access and needs expensive construction,. Ensure the appropriate and timely action is taken on bridges requiring repair and rehabilitation work, strength its risk assessment and priority setting process, with particular consideration given to bridge identification as poor condition more closely monitor inspections’ compliance with the bridge inspection manual so that critical bridge information is accurately updated. Ethiopian road authority should prepare brief manual for bridge maintenance and continuous supervision by upgrading bridge maintenance contractors.