Spring is nearly here and that means not only road construction but also bridge inspections, beginning in southeast Minnesota and expanding north as weather improves.  MN-DOT’s Mike Dougherty in Rochester says some bridges are inspected annually, while others are on a longer schedule:

“Based on the type of materials that they are, their age, any things that have been detected in a previous inspection.  If they do see some things that they want to monitor and see how it develops over the course of a year, they may be back sooner.”

Dougherty says in his part of the state, Mississippi River bridges are typically inspected every year.