Are there city mandated hours in which construction can be performed?

According to the Lincoln Public Works and Utilities Right-of-Way Procedures Manual: Except in the case of an emergency, no work will be permitted between the hours of 10PM and 6AM, except for instances when the Public Works Department deems it necessary to expedite construction and/or minimize traffic disruption. In these instances, the permittee will be required to obtain a noise permit from the Lincoln/Lancaster County Health Department.