Traffic engineering firm Glatting Jackson Kercher Anglin Lopez Rinehart Inc., based in Orlando, Fla., found that traffic in downtown Columbia would be unbearable if the maximum proposed residences and businesses are built.

Up to 5,500 additional apartments and 6.5 million square feet of office space could be built in the next 30 years, as Columbia?s Town Center is redeveloped into an urban area.