approaches the Cedar River near the village of Rochester. Just east of the river crossing, Iowa 38 joins I-80 from the north. The county road that continues to the south from Iowa 38 leads to Moscow. The two highways travel together for until they reach the Wilton area. Here, Iowa 38 exits to the south, while US 6 joins I-80 for the last time. Before reaching the Quad Cities, I-80 passes Walcott and Iowa 80, which is self-billed as the "World's Largest Truck Stop". The truck stop has three restaurants, a gift shop, movie theater, museum, barber shop, and dentist on site. On average, the truck stop has served more than 1.4 million customers per year since it opened in 1965. As I-80 and US 6 approach the Quad Cities, the speed limit drops to for the final time. Just within the city limits of Davenport is the I-280 interchange. US 6 exits to the south to join I-280 while I-80 is joined by US 61. I-80 and US 61 only share of freeway before US 61 exits to its own freeway heading north. In between the two exits is an interchange with Northwest Boulevard, which marks the eastern end of Iowa 130. A couple miles east of the eastern US 61 interchange is the western end of I-74. Because of a "turn off to stay on" interchange with I-74 and I-280 near Colona, Illinois, called "the Big X", I-74 through traffic is urged to use I-80 around the Quad Cities to the Big X. At the Big X, traffic from both I-74 and I-80 must exit their respective freeways to continue on the same route. Near the Mississippi River, the Interstate takes a sharp curve to the southeast to line up perpendicularly to the river. Just before the base of the bridge is an interchange with US 67, the last exit in Iowa. I-80 ends its journey through Iowa over the Mississippi River on the Fred Schwengel Memorial Bridge. It enters rural Rock Island County, Illinois, and continues toward Chicago, Illinois. Services The Iowa DOT operates 37 rest areas and one scenic overlook in 20 locations along its of Interstate highway. Along I-80, there are nine locations that have facilities for each direction of traffic. Parking areas are divided so passenger automobiles are separated from large semitrailer trucks. Common among all of the rest stops are separate men's and