Air Force official John Henderson tells the Omaha World-Herald that about 60 structures must be demolished after Missouri River flooding overwhelmed the air base in March. The buildings were destroyed by floodwaters up to 9 feet (2.7 meters) high, as well as a toxic sludge left behind when the waters receded.
The latest estimate is $70 million more than the initial estimate issued last month as part of a $4.9 billion federal funding request for disaster relief.
Henderson says $300 million would be designated to design and build new structures, while $120 million will go toward cleanup and repairs.