Iowa Highway 78
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| Route information | ||||
| Maintained by Iowa DOT | ||||
| Length: | 58.429 mi (94.032 km) | |||
| Existed: | 1920s – present | |||
| Major junctions | ||||
| West end: |
 Iowa 149 near Martinsburg
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  US 218 / Iowa 27 near Olds
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| East end: |
  US 61 / CR H22 near Morning Sun
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Iowa Highway 78 (Iowa 78) is a 59-mile-long (95 km) state highway which runs from east to west in southeastern Iowa. The route begins east of Martinsburg at Iowa Highway 149, and ends at U.S. Route 61 east of Morning Sun. The route has existed since the 1920s, when it was a short spur route between Olds and Winfield. By the 1950s, the route reached its current extents.
Iowa Highway 78 begins two miles (3.2 km) east of Martinsburg in Keokuk County at an intersection with Iowa 149. Iowa 78 heads east, serving the communities of Pekin, Ollie, and Richland. East of Richland, it intersects Iowa 1; the two routes cross into Washington County, running together for 7 miles (11 km). At Brighton, the two routes split – Iowa 1 to the north and Iowa 78 to the south. It briefly ducks into Jefferson County before entering Henry County near Coppock.
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Wikipedia