MISSOULA – The I 90 eastbound Quartz Flat Rest Area located between Superior, and Alberton will be closed temporarily starting Monday, September 26. MDT will be redeveloping the well that supplies water to this rest area due to excessive amounts of sand in the current well. Although the water has been safe to drink and use, over time the sand will reduce the service life of the rest area’s water system. Redeveloping the well includes methods for removing loose sediment in the aquifer near the well. This will stabilize or minimize the amount of sand being pumped into the water system. It is anticipated that this project will take a couple of weeks to complete. Check the MDT Travel Info Map for more information: 511mt.net