During Hurricane Harvey, the flooding was so bad, there was a small craft advisory on the interstate

http://tywkiwdbi.blogspot.com/2017/09/highway-east-of-houston-last-week.html

without a hurricane.
https://www.reddit.com/r/HeavySeas/comments/6ww1jb/interstate_10_at_the_jeffersonchambers_county/?st=j73hvps6&sh=96c498c0

Take a moment to appreciate that the storm winds, currents, and new made rivers etc all are so powerful, they moved the linked Jersey Barriers. They weigh 4700 pounds a piece.... and that's why it's not too safe to try and drive through flooded areas with moving water. It can easily move your car or truck and put you in a bad situation... and really, what's your insurance company going to say when they see your car on the news, as you drive through the flood?

https://www.reddit.com/r/pics/comments/6x5eax/this_is_the_freeway_after_the_water_receded/