 East of US 131 , M @-@ 6 crosses over Division Avenue and enters Gaines Township through a series of sound barrier walls as the freeway ramps merge back into the main lanes . This area had the highest traffic counts in 2011 at 55 @,@ 236 vehicles per day . Near Kalamazoo Avenue , the freeway passes through an area with retail businesses and movie theaters on each side of the interchange ; to the northeast is East Kentwood High School . On the approach to the East Paris Avenue <unk> , M @-@ 6 curves first to the northeast and then back to the southeast , passing near one of <unk> 's office buildings , the pyramid @-@ shaped Corporate Development Center . The freeway begins to curve to the northeast as it crosses into Caledonia Township , with an interchange for M @-@ 37 ( Broadmoor Avenue ) and an overpass for 60th Street . M @-@ 6 curves around the southeast side of the Gerald R. Ford International Airport in Cascade Township . As the South Beltline <unk> I @-@ 96 , it crosses 48th Street next to the <unk> <unk> Golf Course . The carriageway splits into ramps for each direction of I @-@ 96 , the ramps to eastbound I @-@ 96 crossing over the <unk> River in the process . This interchange marks the eastern terminus of the Paul B. Henry South Beltline Freeway . The entire length of the freeway is listed on the National Highway System , a system of roads important to the nation 's economy , defense and mobility . 
