Sioux Gateway Airport (SUX) : Merge onto I-29 N via the ramp on the left toward Sioux City.
Merge onto US-20 E/US-75 N via EXIT 144A toward Ft Dodge/Le Mars.
Take EXIT 1 toward Lakeport Rd.
Keep right to take the ramp toward Southern Mills Drive.
Merge onto S Lakeport St.
Take the 1st left onto Southern Hills Dr
4723 SOUTHERN HILLS DR is on the left.