Verticality and Horizontality Monitoring of Mahakam Bridge Piers Post-Barge Collision Using Geodetic and Structural Instrumentation

This study evaluates the vertical and horizontal stability of Piers 2 and 3 of the Mahakam Bridge in Samarinda, East Kalimantan, a vital infrastructure subjected to heavy daily traffic loads. Monitoring was conducted using high-precision geodetic instruments, including Total Station, Geodetic GPS, Digital Level, and Tiltmeter, to accurately detect structural displacements. Data were collected over a 96-hour period and analyzed spatially using AutoCAD and ArcGIS. Results show that Pier 2 experienced lateral deflection ranging from 0.024% to 0.048%, while Pier 3 exhibited a maximum vertical deviation of 0.010% and horizontal shift up to 0.055%—within acceptable safety limits. The displacement patterns were linear and showed no abrupt angular changes. These findings confirm that the structure remains stable and safe for continued use, though periodic monitoring is recommended, especially during peak loads or after extreme weather events. This research provides a robust foundation for long-term bridge maintenance and technical decision-making.

Materi Kuliah: Rekayasa Fondasi II

Pertemuan III Rekayasa Fondasi II