Iowa Highway 12
Loess Hills Scenic Byway | ||||
|---|---|---|---|---|
| Major junctions | ||||
| South end |   US 20 / US 75 at Sioux City | |||
| North end |  Iowa 10 in Hawarden | |||
| Location | ||||
| Country | United States | |||
| State | Iowa | |||
| Counties | ||||
| Highway system | ||||
| ||||
| ||||
Iowa Highway 12 (Iowa 12) is a 46.212-mile-long (74.371 km) state
Interstate 29 (I-29). From here, the highway lies just east of the Big Sioux River, which separates Iowa from South Dakota. The northern end of Iowa 12 is in Hawarden at an intersection with Iowa 10
.
Route description
Iowa Highway 12 begins at U.S. 20 and U.S. 75 signed as
Business US 20. It continues west through Sioux City and becomes concurrent with Interstate 29 going west to Riverside Boulevard, where signage begins. It follows Riverside Boulevard while it passes through the Riverside neighborhood in Sioux City. It passes past Stone State Park in northwestern Sioux City and continues northwest towards Westfield. It turns northeast to enter Westfield, then intersects Iowa Highway 3. Iowa 12 and Iowa 3 overlap and go northeast to Akron, where Iowa 3 turns east. Iowa 12 continues northeast through Chatsworth
and ends at Iowa 10 in Hawarden.
History
Iowa Highway 12 was designated as a state highway in 1920. It originally went between
Business Route 20 to end at the new U.S. 20
bypass in eastern Sioux City. In 2000, signage for this extension was removed and signage for Iowa 12 ended at I-29, though officially, Iowa 12 continues east through Sioux City.
Major intersections
| County | Location | mi[2] | km | Exit | Destinations | Notes |
|---|---|---|---|---|---|---|
| Southern end of US 20 Business overlap; US 75 south exit 93, US 20 east exit 4B | ||||||
| Sioux City | 3.085 | 4.965 | Fairmount Street | Former US 75 | ||
| 3.380 | 5.440 | – |   US 75 Bus. (Lewis Boulevard) | Interchange | ||
| 4.376 | 7.042 | 147A |   I-29 south | Southern end of I-29 overlap; exit numbers follow I-29; signed exit 147 southbound | ||
| 5.702 | 9.176 | 148 |   US 20 Business west) / Wesley Parkway north – South Sioux City, Nebraska | Southern end of US 20 Business overlap; southbound access via exit 149 | ||
| 5.415 | 8.715 | 149 |  To US 20 Business west) / Hamilton Boulevard – Riverfront Wesley Parkway north – South Sioux City | Northbound signed as Hamilton Boulevard only | ||
| 7.920 | 12.746 | 151 |  I-29 north – Sioux Falls | Northern end of I-29 overlap; IowaDOT signs this as southern end of Iowa 12 | ||
| 8.155 | 13.124 | War Eagle Drive | Former US 77 | |||
| 9.909 | 15.947 | Military Road | Former US 77 | |||
| Plymouth | Westfield Township | 28.698 | 46.185 |   Iowa 3 west – Vermillion, S.D. | Southern end of Iowa 3 overlap | |
Loess Hills Scenic Byway ends – Le Mars | Northern end of Iowa 3 overlap | |||||
| 34.199 | 55.038 |    Big Sioux River Road to I-29 / SD 48 – Alcester | ||||
| Sioux | Hawarden | 46.551 | 74.917 | Iowa 10 – Beresford, S.D., Orange City | Road continues as Iowa 10 west (Avenue E north) | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
References
- ^ 2014 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2014. Retrieved July 17, 2015.
- ESRI shapefile). Ames: Iowa Department of Transportation. April 9, 2021. Retrieved August 19, 2021.
KML is from Wikidata