Tunnels

Tunnels Under Duluth Remain Some of the City’s Oldest Infrastructure

The tunnels under Duluth are a part of the city's storm drain system

DULUTH, Minn. –¬†Infrastructure development was booming at the turn of the twentieth century in Duluth and under it. The tunnels of Duluth were built to convey water under major roads without disrupting the city above. “They are durable. That blue stone doesn’t wear away. The bottoms of them are still on their original bedrock channel,” city program coordinator Todd Carlson…