Whats happening on 7th Street?

So, I take a few days off and come home to Long Beach to find major changes on 7th Street this morning. Whats happening...? The normal place to start is a Google search... starting with the City's traffic website but that was a dead end. I was able to find some upcoming projects for the future, but that does not explain what is happening today. There is a vital need to improve the traffic on 7th... I guess we just need to see what happens. Any thoughts? Jeff