Interstate 229 (South Dakota)
|Maintained by SDDOT|
|Length:||11.33 mi (18.23 km)|
|Existed:||1966 – present|
|South end:||I‑29 in Sioux Falls|
|North end:||I‑90 / CR 125 near Sioux Falls|
Interstate 229 (I-229) in South Dakota runs just more than ten miles (16 km) mostly within the city limits of Sioux Falls, the largest city in the state. It runs from a trumpet interchange Interstate 29 in the southern extremities of Sioux Falls to Interstate 90 just north of Sioux Falls. In between, the interstate travels through parts of southern and eastern Sioux Falls.
Since its initial construction, I-229 had the distinction of being the only Interstate in the country that transitioned directly from a four-lane concrete road to a two-lane gravel road. That ended in 2006 with the paving of 476th Avenue, the continuation of the highway beyond its northern terminus at the interchange with I-90.
I-229 begins at a trumpet interchange with I-29 just south of Globe University. I-229 travels to the northeast, passing north of the Avera Heart Hospital of South Dakota before going through several parks. A few miles to the northeast, just after the Cliff Avenue exit I-229 turns north and passes through metropolitan Sioux Falls. I-229 terminates at a partial cloverleaf interchange with I-90.
Legally, the route of I-229 is defined at South Dakota Codified Laws § 31-4-210.
|Lincoln||Sioux Falls||0.00||0.00||1||I‑29||Southbound exit and northbound entrance; signed as exits 1A (south) and 1B (north)|
|3.58||5.76||3||I‑229 Bus. north / SD 115 (Minnesota Avenue)|
|5.59||9.00||5||26th Street||Also serves 33rd Street; southbound exit and entrance at Yeager Road|
|7.15||11.51||6||I‑229 Bus. south / SD 42 (10th Street)||Old US 16; single-point urban interchange|
|8.35||13.44||7||Rice Street – Brandon|
CR 125 (476th Avenue)
|Northbound exit and southbound entrance; signed as exits 10A (west) and 10B (east); roadway continues as CR 125|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- "Route Log and Finder List - Interstate System: Table 2". FHWA. Retrieved 2007-10-03.
- Callison, Jill (2006-11-18). "Sioux Falls Argus Leader - November 18, 2006, page 1A". Argus Leader. Retrieved 2011-05-12.
- Google Inc. "I-229 SD". Google Maps (Map). Cartography by Google, Inc. http://maps.google.com/?ll=43.523659,-96.744919&spn=0.223547,0.617294&z=11&vpsrc=6. Retrieved 2011-09-07.
- "South Dakota Codified Laws - § 31-4-210". South Dakota Legislature. Retrieved 2008-06-25.
- Yahoo! Inc. "Interstate 229 (South Dakota)". Yahoo! Maps (Map). Cartography by Navteq. http://maps.yahoo.com/#mvt=m&lat=43.550636&lon=-96.716993&zoom=13&q1=43.487504%2C-96.794262&q2=43.60701%2C-96.690557. Retrieved March 14, 2011.
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