Four bridges on Minnesota State Highway 210 in Carlton County will be replaced using funding from the U.S. Department of Transportation.

St. Louis County is leading the project and will receive the entirety of the $10.2 million grant to replace or improve 21 bridges between the two counties, including the four bridges in Carlton County, which are owned by the Minnesota Department of Transportation.

The construction cost for the four Highway 210 bridges is estimated to be approximately $1.4 million, said Matt Hemmila, deputy public works director in engineering for St. Louis County. The funding comes from the federal Competitive Highway Bridge Program, which awarded a total of $225 million in grant funding to 18 states.

“The projects funded under the program will serve as models for similar bridge improvement projects throughout the nation,” Federal Highway Administrator Nicole R. Nason said in a press release. “They are examples of how to achieve time and cost savings through innovation.”

State departments of transportation could apply for the grant if their state has a population density of less than 100 people per square mile.