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Interstate 129
Highway in Iowa and Nebraska / From Wikipedia, the free encyclopedia
Interstate 129 (I-129) is an auxiliary Interstate Highway which connects South Sioux City, Nebraska, to I-29 in Sioux City, Iowa. Opened in 1976, I-129 is a 3.5-mile-long (5.6 km) route, running 3.21 miles (5.17 km) in Nebraska. At 0.286 miles (0.460 km), I-129 is the shortest highway in the state of Iowa. All of the route's length is concurrent with U.S. Route 20 (US 20) and most of its length is concurrent with US 75.
Quick Facts Route information, Length ...
I-129 highlighted in red | |||||||
Route information | |||||||
Auxiliary route of I-29 | |||||||
Length | 3.50 mi[1][2] (5.63 km) Nebraska: 3.21 mi (5.17 km) Iowa: 0.286 mi (460 m) | ||||||
Existed | November 22, 1976[3]–present | ||||||
NHS | Entire route | ||||||
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Country | United States | ||||||
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