Dakota and Iowa Railroad (DAIR) is a shortline road and Rail Transportation Service unit of L. G. Everist., Inc., a supplier of high quality aggregates. The D&I runs from Sioux City, IA, to Sioux Fall, SD, on former Milwaukee Road trackage. Transportation of aggregates is the main focus of the D&I, augmented with seasonal shipments of grain.

DAIR 3026 at Sioux City, IA, 4/23/24.

DAIR 19 at North Sioux City, SD, 5/05/04.

DAIR 3 at North Sioux City, SD, 5/05/04.

DAIR 8 at North Sioux City, SD, 5/05/04. Note the dynamic brakes on this unit (bulge on long hood above the "8") compared to #3.