Monitoring of Bridge Structure Construction

A large-scale project providing engineering and geodetic support for the construction of a bridge crossing over a major water barrier. Utilizing unmanned technologies, we provided the client with high-precision control over the installation of high-altitude pylons, deck structures, and safe coordination of a fleet of heavy floating cranes.

High-Altitude Inspection and Supervision of Unique Construction
The construction of bridge crossings falls under high-complexity structures (consequence class CC3). Such projects demand extreme precision while working at significant heights and over water. The main challenge for the client's engineering team is the continuous monitoring of the geometry of cable-stayed pylons at heights exceeding 100 meters, as well as the incremental launching of heavy steel spans.
We deployed UAVs for regular orthophoto mapping of the assembly site and 3D modeling of the structures. Our aerial surveys allowed for rapid leveling and monitoring of assembly crews and floating equipment directly from the air, providing chief engineers with a comprehensive, real-time picture of the construction progress.

 

Control of Hydrotechnical and High-Altitude Operations

The installation of bridge structures using floating cranes requires surgical precision. Our footage captures complex operations on the water where every centimeter of movement matters. Utilizing drones allows for the inspection of weld seams, structural joints, and cable-stayed tension at critical heights, where traditional access by industrial climbers is too hazardous, time-consuming, or technically unfeasible.

 

Historical Chronicle of an Infrastructure Project

Beyond the technical functions of geodetic supervision, regular aerial surveys create a unique time-lapse archive of the construction. It documents every milestone — from the installation of the first underwater piers to the joining of the bridge's main river spans. This footage serves as the foundation for reports to government authorities, presentation materials for the media, and proof of the highest professionalism of the construction contractors on an international level.

Supporting bridge construction with UAVs reduces the risk of occupational injuries and optimizes the time required for daily geometric measurements by 70%.



tags: bridge construction, drone monitoring, infrastructure survey, aerial photogrammetry, high-altitude inspection, structural monitoring, civil engineering