Crossbay Bridge Upgrade
Project
Scheduled upgrades for this six-lane highway bridge include replacement of fender systems and improvement of scour protection. The bridge must remain open during construction.
Monitoring Requirements
The project will require vibration monitoring and stability monitoring. The photo above shows heavy stone mattresses being placed at the base of the piers for scour protection.
Implementation
GEO installed automated vibration monitors, laser displacement sensors, and AMTS systems. All of the instrumentation had to be self-powered and wireless
A GEO field engineer has installed a geophone on the pier along with a portable AVM. Both can be be easily relocated as needed by the contractor.
This is one of the solar-powered AMTS systems that were installed.
These laser displacement sensors are monitoring the stability of the piers. They also provide high precision tilt measurements.