A 16 inch water main break has closed Skyline Drive between Swan and Sunrise, according to Fernando Molina of Tucson Water.
Molina says there is no estimated time of restoration, crews have shut off the water. Some customers in the area are out of service.
Some water service should be restored early Tuesday morning.
Traffic is not able to drive on Skyline near the construction site. Only local traffic is permitted.
Stay with KGUN9 for updates.