The funding shortfall for a new Des Moines International Airport terminal has grown by some $25 million and the project may be delayed for years. 

The Des Moines Airport Authority Board heard that updated prognosis Tuesday from infrastructure consulting firm HNTB, which is based in Kansas City, Kansas. 

The board voted in October 2016 to build a new terminal on the east side of the airport grounds near Fleur Drive. The total cost of the overhaul, which includes runway improvements, was estimated at about $500 million.

Airport officials had hoped to start construction on the 14-gate terminal in 2022. But after federal delays on funding runway upgrades, construction on the new terminal may not start until 2026, they learned this week.

Read the full article on the Des Moines Register website.