Where is the furthest south you’ll see signs warning of ice on the roads and bridges?

36 comments

1. There’s signs like this in southern Arizona mere 20 mi from the Mexican border. Also Mount Lemmon in Tucson has a ski area so take that knowledge what you will.

   The signs exist because bridges freeze faster as they are surrounded on all sides by air opposed to roads being heated by the thermal inertia of the earth they are bound to.

2. I see them in Houston, Texas pretty regularly despite freezes being quite rare.

3. I saw some on the George Bush tollway in Dallas

4. They post them here around DFW sometimes.

   It’s only relevant a few days out of the year if any, but they post them.

   Think I saw them in Houston, too.

5. We have them in South and Central Texas

6. Probably any location that ever gets near freezing temperatures.

7. I’ve seen them in the Carolinas and Georgia.

8. It’s not simply a matter of latitude, but of climate which includes elevation and weather patterns as a factor.

   Anywhere that can get freezes could in theory have a warning sign

9. Mt Lemmon outside of Tucson AZ

   But I bet there are similar signs on the road up to Mauna Loa/Kea. But I can’t confirm.

10. Have a couple here in Tucson

11. There are signs all over Georgia around overpasses and bridges warning about ice (for sure on 75/16 south).

12. They exist in Florida.

13. I’ve seen them in mid/southern Georgia so at least far south.

14. You can find them around Florida as well.

15. There’s some in San Diego County. The mountainous part will usually get a bit of ice and snow in the winter.

16. [deleted]

17. There’s a sign on Mt. Laguna in San Diego county warning not to throw snowballs at cars.

    About 100 miles north of Mexico.

18. I’ve seen them in Mississippi

19. I see them in Houston

20. Common in TN.

21. Georgia has em. My little hamlet put one in on a hill leading down to a bridge around 1978 after the mayors son hit some black ice, skidded off into the river, and drowned

22. It’s not just North/South, it’s elevation.

    In the greater Los Angeles area? We don’t have ice warnings regularly.

    However, we usually get 2-3 ‘good storms’ over a typical winter, and the “Los Angeles Basin” has mountains up to 10,000+ feet, so there’s plenty of icy roads and snow, all Winter. Arizona and New Mexico have areas in the Rocky Mountains, so I would guess that they would have plenty of ice even further south.

23. We have them in NC, I see them in the high country but also “bridge ices before road” in the Charlotte area

24. I’ve seen them in northern Florida.

25. They have them in south Louisiana even though it rarely gets freezing conditions. It’s kind of surprising that they wouldn’t have them in Florida. I actually would want proof because I find it hard to believe. Although it rarely gets freezing temps in Florida, it’s a thing that still happens and any bridge over water will be more prone to freezing than surrounding roads on land. And Florida has a lot of bridges.

26. Are you sure you don’t have them? In Texas we have them but they fold up into a triangle when not in use and they say Drive Safe.

27. The Big Island of Hawaii

28. I have seen them for bridges in Georgia.

29. Whereever they can convince the US government to pay for it. Everyone likes federal money, even for stupid things. Tsunami warning signs all over the coasts, for example.

30. Central Alabama has them, especially North Alabama, we don’t get snow we just get ice.

31. New Orleans for sure, I think that the waring there more so refers to tossed frozen daiquiri’s or cocktails.

32. We have them in Atlanta

33. They post them in Georgia and Alabama.

34. I haven’t yet seen any in Florida, but if I cross the state line into Georgia, I don’t have to go far to see them.

35. I’m in south Florida, I’ve never seen ice that wasn’t man-made unless I traveled out of state

    Annoys me that it can get below zero here, rain, and still no snow.

36. I’ve seen them in little towns as far south as Bush, Louisiana

    I’m a truck driver…