title: K-12 (Kansas highway)
text: # K-12 (Kansas highway)
  
  K-12 was a state highway in the U.S. state of Kansas, created in the mid-1980s. Its alignment was changed during its existence.
  
  ## History
  
  K-12 was commissioned when the first section of the K-10 freeway was completed from K-7 in Olathe, Kansas to I-435 in Lenexa, Kansas. K-10, at the time, overlapped K-7 from K-12's western terminus in Olathe north to Shawnee Mission Parkway.
  
  When the K-10 freeway segment from Lawrence to Olathe was completed, K-10 was signed for the entire length (both sections) of the expressway. At this time, K-12 was realigned north to replace the former K-10 alignment along the Shawnee Mission Parkway. It followed the parkway from K-7 in Shawnee, then turned north on Merriam Drive in Merriam, which follows into Kansas City, Kansas. Merriam Lane turns into Southwest Boulevard near US-169, and K-12 ended not far east at the Missouri state line.
  
  Since K-12 existed entirely within the city limits of the cities it traverses, it was turned back to the cities in 1987 according to KDOT policy.
  
  ## Junction list
  
  Major junctions as listed shortly before K-12 was decommissioned in 1987.
  
  | County | Location | mi | km | Destinations | Notes |
  | - | - | - | - | - | - |
  | Johnson | Shawnee | 0.000 | 0.000 | K-7 | Interchange; western terminus |
  | Johnson | Shawnee | | | I-435 | I-435 exits 6A-B |
  | Johnson | Shawnee | | | Lackman Road | Interchange |
  | Johnson | Overland Park | | | I-635 | I-635 exit 1B |
  | Wyandotte | Kansas City | | | US-69 | |
  | Wyandotte | Kansas City | | | K-12 Spur to I-35 | Western terminus of K-12 Spur; to I-35 exit 233A |
  | Wyandotte | Kansas City | | | US-169 | |
  | Wyandotte | Kansas City | | | Southwest Boulevard northeast | Continuation into Missouri |
  | 1.000 mi = 1.609 km; 1.000 km = 0.621 mi ||||||
  
  ## Spur route
  
  K-12 Spur was a .376-mile-long (0.605 km) spur route that ran from K-12 east to Interstate 35 (I-35). Originally K-10 Spur, it was changed to K-12 Spur when the Shawnee Mission Parkway and Merriam Lane were changed from K-10 to K-12. K-12 Spur was withdrawn in 1987 along with K-12 itself.
  
  