Runway Closure at the St. George Regional Airport (SGU)
Closes on May 29, 2019 – Reopens on September 26, 2019
SGU will be closed to repair the runway, which has expansive blue clay close to the surface. 5,400 feet of the runway will be removed and excavated to a depth of 17 feet to remove the blue clay. A five-foot-deep clay plug will then be placed in the bottom of the excavated area (similar to the clay liners in landfills) to prevent moisture from reaching the ground under the runway. Then at two feet below the surface, a water impermeable membrane will be placed in an area 7,000 feet long by 650 feet wide, to further prevent water from getting into the soils.