In June 2011, work was completed on a $6.2 million remodeling of the 58-year-old terminal building. The City of Sioux City received federal and state funds that picked up 78 percent of the $6.2 million cost to renovate the terminal building. The city received a Federal Aviation Administration grant for the new passenger loading bridge, plus $3.97 million in federal stimulus funds and a state Airport Vertical Infrastructure grant. The city's share was $1.4 million, which was about twice as much as originally estimated caused construction problems due to termite and drainage damage.