Interstate 229 (I-229) is the designation for two Interstate Highways in the United States, both related to Interstate 29:
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Interstate 229 (South Dakota)
Interstate 229 (I-229) is an auxiliary Interstate Highway located entirely within Sioux Falls, South Dakota, United States. It runs for approximately around the southern and eastern sides of the city, providing a bypass route and connecti ...
, a bypass of Sioux Falls, South Dakota
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Interstate 229 (Missouri)
Interstate 229 (I-229) is a auxiliary Interstate Highway that runs through St. Joseph, Missouri. It begins southeast of the city at Interstate 29 in Missouri, I-29 and U.S. Route 71 (Missouri), U.S. Route 71 (US 71) and travels to ...
, a loop around St. Joseph, Missouri
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