This is borderline biblical!
In this video, a police officer has to call a snow plow to remove mayflies, or shadflies, whichever you want to call them, from a road. There were so many of them that he can barely see out of his car window, and the road surface on a bridge was lined with them, actually making it as slippery as ice.
The Iowa Department of Transportation posted on Facebook, saying:
Shadfly alert! This video was taken Saturday night/Sunday morning on the Savanna/Sabula bridge over the Mississippi River. Shadfiles, also known as Mayflies, are in the height of their hatching season and are covering the bridge, making it very slick. Local law enforcement called out our DOT forces to plow the insects off the bridge.
Dick Banowetz, our supervisor in the area said the flies were ankle deep on the bridge. Once his crew plowed the bridge, they applied sand for traction.
To try keep the Shadflies off the bridge during their hatching period the next few weeks, we’re going to keep the lights off at night.
Everyone crossing the bridges needs to use extra caution and motorcyclists especially need to be very careful on this bridge as the road surface is very slick from the flies.
This isn’t the video for you if you have entomophobia…
https://www.youtube.com/watch?v=QGbTl5ZFZ5Q