It's probably not something you think about consciously when you hop in your car. But just over 10 percent of Michigan's bridges are structurally deficient, just more than 450.

"It doesn't surprise me, but it worries me at the same time," says driver Brenda Alagna of Holt.

The term itself, structurally deficient, might sound scary.

But MDOT spokesman Bill Shreck wants to soothe your fears.

"It doesn't mean the bridge isn't safe. It just means we need to be doing repairs pretty soon," he says.

Shreck guarantees bridges are analyzed for safety every one to two years, and they'll close bridges if they're unsafe.

"After Minnesota (bridge collapse), people were concerned about bridges. We generate the report anyway, so we thought we'd put it online," Shreck says.

According to the report, eight bridges in Ingham county are structurally deficient. They range from the clemens street bridge over I-496, to a bridge on Grand River at Park Lake, to Lake Lansing Road at US-127. That bridge is almost 40 years old.

"It's a busy place to be," Alagna says. "It's always amazing to me how many people use the roads, and how they're not taken care of as well as they should be."

And it's not just Ingham County.Clinton County has two of these bridges, Eaton has three and Jackson County has the most, with 16.

Problem is not that the bridges are going to collapse, but that there's not enough money to fix them all.

"We're still $320 million short a year to fix our transportation system," Shreck says.

For now, they'll just repair when necessary.