MACKINAC CITY, Mich. (WILX) -- Researchers are getting ready to use the Mackinac Bridge to test a sensor that can help identify maintenance needs to the Mighty Mac.
Cropped Photo: WPBN
The sensors are powered by the vibrations from traffic.
The first 20 prototypes were installed in 2016.
The next step is to add 2000 of them over the summer.
Officials say it's a cheaper way to collect information on bridge conditions.