If the Missouri Department of Transportation gets its way, a long-planned Mississippi River bridge at St. Louis could charge users a fee. Officials in Illinois aren’t too sure about the idea.

The new bridge is expected to relieve traffic on the Poplar Street Bridge, which carries traffic from Interstates 55, 64 and 70. More than 120,000 vehicles cross the bridge daily.

Plans call for building an eight-lane bridge, relocating I-70 in Illinois and constructing an I-70 interchange in Missouri.

Missouri Transportation Director Pete Rahn said the new bridge is expensive and has a price tag just under $1 billion, The Associated Press reported. And he said the state doesn’t have the $300 million likely needed to cover its share of the cost.

Illinois would rather tap “conventional methods” such as state and federal funds – not tolls – to pay for the bridge.

The long-delayed project got a shot in the arm recently with the signing of the federal Highway Bill that earmarked $240 million for the project. But the check won’t be mailed until Missouri and Illinois agree on the bridge’s funding plan.

Dispute over the toll played a part in a task force’s decision this past week to suspend its help in developing a bridge plan until the states work out how much money each will spend, The AP reported. They will also wait for Missouri to reveal how tolls could impact traffic flow and revenue.