I’m not sure about "state & US hwy." designations. I’m refering to the part of Hwy. #40 (6th St.) East of Hwy. #10. & West of Wakarusa Rd.. It’s a brand new "4-lane" with an ‘island’ in the middle throughout, with excellent visibility and No businesses on either side! The posted limit (new Non-construction signs) has been 40mph, Way below what’d still be safe. 3 yrs ago it was a much narrower 2-lane w. a posted speed limit of 55mph! Due to a lot of complaints (good!) and ‘too many speeding tickets’, the posted speed will (or has just been) be raised to 45mph (yet to be posted). This is a bit lower than what would still be safe for such a road.