Carlson and Mortenson have started construction on a $137.5m Radisson Blu hotel adjoining the Mall of America in Minneapolis, Minnesota, US.

Situated on the mall’s south side, the 500-room hotel is a part of the second phase expansion at the Mall of America and is being developed by Mortenson.

Carlson and Mortenson are equity partners in the hotel and Carlson Hotels will manage the property for 40 years.

Opening in March 2013, the 13-storey Radisson Blu will feature a drive-up entry on the ground floor and a lobby with a concierge lounge on the mall’s second floor.

The hotel will offer a spa, a fitness facility, an indoor swimming pool and more than 22,500 square feet of meeting and event space, including two ballrooms.