Gwinnett County will get an extra $28 million in funding as it seeks to widen State Route 20 near Sugar Hill.

The county Board of Commissioners last week approved an updated agreement with the state Department of Transportation that provides the money. It will be used to buy land to widen the highway from Peachtree Industrial Boulevard to the Chattahoochee River. The county already has received $11 million in federal and state funds to buy right of way along the route.

The county will replace the existing two-lane road with a four-lane divided highway.