Assessment of Bridge Deterioration Using The Bridge Management System Method and Its Maintenance Strategies (A Case Study of Miangas Bridge, Dendengan Luar, Tikala District, Manado City)

Abstract

Bridges are essential transportation infrastructures that play a significant role in supporting community mobility and economic activities. As their service life increases, bridge conditions may deteriorate due to various forms of damage that can potentially affect the safety and comfort of users. This study aims to identify the types of damage, assess the level of deterioration of the Miangas Bridge located in Dendengan Luar Village, Tikala District, Manado City using the Bridge Management System (BMS) method, and determine appropriate maintenance and rehabilitation measures. The research employed a quantitative approach, with data collected through visual inspections, field documentation, and concrete strength testing using the Hammer Test. The inspection results revealed several defects, including rough and pothole-ridden pavement surfaces, debonding of expansion joint connections, spalling and porous concrete, as well as reinforcement corrosion. Based on the BMS assessment, a condition rating (CR) of 2 was obtained for the roadway pavement, deck slab, diaphragm, and pier, while the main girders and expansion joints received a condition rating of 3. The overall bridge condition rating was 2, indicating minor damage and the need for routine and periodic maintenance. Hammer Test results indicated concrete compressive strengths of 28.2 MPa, 37.3 MPa, and 39.8 MPa for the girders; 39.3 MPa and 41.4 MPa for the deck slab; and 39.8 MPa for the pier. Recommended corrective actions include pavement rehabilitation, replacement of expansion joints, repair of damaged concrete, corrosion cleaning, and additional reinforcement in deteriorated structural components.