Why can’t closures/work be done at night or during the winter when traffic is so much lower?

Due to the type of work involved and nature of the narrow corridor with steep slopes, having the contractor work at night or during the winter when there is the possibility of ice and snow is both hazardous and much more costly. The blasting work at the south end of the project cannot be completed at night, as this would impose unacceptable safety risks to construction crews and the public. There is also some work, such as paving, that must be done in certain temperatures. In the Oak Creek Canyon/Sedona area, we typically shut down work during the winter due to the weather conditions.