Iowa Highway 32
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| Northwest Arterial | ||||
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| Route information | ||||
| Maintained by Iowa DOT | ||||
| Length: | 5.101 mi (8.209 km) | |||
| Existed: | 1995 – 2017 | |||
| Major junctions | ||||
| South end: |
 US 20 in Dubuque
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| North end: |
  US 52 / Iowa 3 in Sageville
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| Location | ||||
| Counties: | Dubuque | |||
| Highway system | ||||
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Iowa Highway 32 (Iowa 32), also known as the Northwest Arterial, was a state highway that ran through the northwest quadrant of Dubuque. At just over 5 miles (8.0 km) long, it was among the shortest state highways in the state. The highway began at U.S. Highway 20 in Dubuque and ended at US 52 / Iowa 3 in Sageville. With the exception of a small portion at the northern end, the entire highway was within the Dubuque city limits.
Iowa Highway 32 began at an intersection with US 20 in Dubuque. From US 20, Iowa 32 headed north and immediately dropped 100 feet (30 m) in elevation into the valley of the middle fork of Catfish Creek. It headed back uphill and intersected Pennsylvania Avenue. One mile (1.6 km) north of this intersection was another intersection with Asbury Road, named for the small town located three-quarters mile (1.2 km) west of the intersection.
North of Asbury Road, the Northwest Arterial was flanked on both sides of the road by retail establishments, most of which popped up in the early-2000s. The highway made a 45° turn to the northeast, heading towards Sageville. Just to the northeast was an intersection with John F. Kennedy Road (JFK), which for the first six years of Iowa 32's existence, was the northern end of the route. Northeast of JFK, the highway passed the Dubuque Arboretum and Botanical Gardens. Just to the northeast of the arboretum was the intersection with US 52 / Iowa 3 in Sageville.
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