 Leaving Denver , the highway serves the redevelopment areas on the former site of Stapleton International Airport ; runway 17R / 35L crossed over the Interstate at the runway 's midsection . East of Aurora , I @-@ 70 rejoins the alignment of U.S. Highway 40 at Colfax Avenue . The freeway proceeds east across the Great Plains , briefly dipping south to serve the city of Limon , which bills itself as Hub City because of the many rail and road arteries that intersect there . I @-@ 70 enters Kansas near Burlington , a small community known for having one of the oldest carousels in the United States . 
