Douglas County, Kansas, maintains an extensive network of county highways to serve the rural areas and state parks of the county. It is one of a handful of Kansas counties to do so.
The major county highways are set up on a grid. East–west-oriented roads have a three-digit number beginning with the numeral "4" and ending in an even digit. The further north the road, the lower the number; the further south, the higher the number. North–south-oriented roads have a four-digit number beginning with "10" and ending in an odd digit. The further west the road, the lower the number; the further east, the higher the number.
There are also minor county roads with one or two digits that travel a short distance or serve a state park.
None of the county highways enters Lawrence, the county seat.
The maximum speed limit on all county highways in Douglas County is 55 mph (89 km/h).
Lists
Major east–west oriented roads
Highway
Western terminus
Eastern terminus
Notes
CR 438
CR 1029 3 mi. south of Lecompton; road continues as CR 1029 north
Lawrence city limits a half mile north of the intersection of Kasold Drive and Peterson Road
Part of the "Farmer's Turnpike" between Lawrence and Lecompton
CR 442 (west)
Shawnee County line; road continues as SE 45th Street