So How's This Supposed to Work?

Last week there was concern that our business neighbors might have a gas leak. So the gas company was called and they came out, detected gas, and brought out a backhoe to tear up the street. (They actually worked until about 10 at night.)  

Once done, however, the street is torn up and three cones are left to mark the spot.

Question: How long do you think it will stay that way?

Note: That building in the background still reminds me of The Amityville Horror house.