Bridge construction

The city has given the construction company working on the Sellwood Bridge a noise ordinance waiver for the next few weeks while they do some very noisy work getting the poles in the water for the temporary bridge that will be used during the bridge renovation. (Apparently, creating the second bridge drastically reduces the time needed to fix the original bridge.) What I've noticed so far is that it seems as if the construction is very, very quiet during the day and that the noise disturbances pick up around 9p.m. at night. Sometimes these disturbances continue until well after 2a.m., when I finally manage to drift off to sleep. I'm wondering, would it be that difficult to wait half a day so they could get on the schedule where they are doing the really loud work during the day and the less noisy work at night? Pretty please?