ArnabSaha asked if I could look at this. I only had a few minor comments:
Before state highways were numbered in Kansas there were auto trails, the former Meridian Highway crosses K-148 slightly west of Talmo, the former Kansas White Way crosses between K-15 and Barnes, and the former Pikes Peak Ocean to Ocean Highway crosses by Hanover. - this is a run-on sentence. I suggest splitting into two after "auto trails".
Because each subsection is only one paragraph long, I would suggest removing the subheaders in the "History" section, which appear unnecessary. However, the subheaders in the "Route description" section seem to serve the purpose of separating the general route description from the specific route description. So I would instead suggest splitting these subsections into 2 paragraphs each, if possible.
K-148 is not included in the National Highway System.[6] The National Highway System is a system of highways important to the nation's defense, economy, and mobility. - On the other hand, I would combine these two sentences.
The highway continues east for 3.2 miles (5.1 km) then crosses Republican River, then passes the unincorporated community of Norway and has an at-grade crossing with a KYLE Railway track. - this seems like a run-on, probably because of the use of "then" twice in the same sentence.