I have to wonder if there is a county 'cap'
(a) The secretary of transportation shall designate, adopt and establish and may lay out, open, relocate, alter, vacate, remove, redesignate and reestablish highways in every county in the state, the total mileage of which shall not exceed 10,000 miles. The total mileage of such highways in each county shall be not less than the sum of the north to south and east to west diameters of the county.
(emphasis mine)
My apologies--I was going by memory. It does look like the "county cap" is, in fact, a county floor. I also remembered there being carve-outs for at least Sedgwick and Johnson counties, but if that was indeed the case in the past, it is no longer so.
I have had a look at other portions of
KSA § 68-406. Clause (b), dealing with city connecting links, is worded in a rather confusing way, but I interpret it as follows:
* With the sole exception of Interstate loops and spurs, a city connecting link cannot exist without a length of state highway to anchor it to land that is not within the jurisdiction of an incorporated city in Kansas. (It is not clear what happens when this anchor connection is broken by annexation, so that the entirety of a given non-Interstate route is within city limits. Is it saved as long as there is a path along CCLs that exits the city limits, even if that routing uses other routes? In the past we have speculated this may have been a factor in some reroutings or system deletions in suburban Johnson County.)
* City connecting links are not part of the state highway system and so do not count against the mileage cap. However, the county floor requirement applies to state highways and CCLs cannot be used to satisfy it. In some heavily urbanized counties, this theoretically could have the perverse effect of encouraging KDOT to create or retain functionally unnecessary spurs and to keep long state highway routings on the books in order to stay above the minimum mileage requirement.
* The Kansas Turnpike is not a state highway, nor are its urban lengths CCLs. (Contrast the position in some other states, such as Texas, where toll roads are typically state highways regardless of location or whether the administering agency is the state DOT.)
* Untolled Interstates within cities, contrary to my past understanding, are not in fact state highways but rather are CCLs.
Also, going through some of the Rural Resolutions, the mileage cap, at least at one time, did not count spur routes to state or federal lakes.
This is still the case: see clause (d). The reason for this is that such spur routes are not part of the state highway system and do not need to be constructed to the standards applicable to state highways.
I also had a look at
KSA § 68-406a. The intent of this section is clearly to give the KDOT secretary the power to cooperate with other states in creating multi-state routes in situations where the sole obstacle to route continuity through Kansas is an unimproved length of county road, of no greater than fifteen miles in length.
It is my recollection that Chapter 68 of the Kansas statutes used to have language providing for the existence of a system of county roads (subject to a 25,000-mile cap) which were designed to function as feeders to the state highways (in effect, as a system of secondary state highways). I think this system was linked to preferential funding compared to other county highways. However, the relevant language seems to have disappeared.