Hello from beautiful (yes, beautiful) Ocean Springs, MS!
My DH works for Jackson County and he tells me that they will be ready for the 4th of July! There are no piers, but the locals are using the beach. I hope this helps.
When coming to Ocean Springs please exit I10 at Exit 50. If you exit in Biloxi, the Biloxi/Ocean Springs bridge was destroyed during the storm and you'll just have to go back to I10 or drive through d'Iberville to get to OS.
I hope you have a great trip!