US-75 Overlays, Brown & Nemaha Counties, Kansas (Koss #78 & #79)
In 2013, Koss paved a portion of US-75 from the Nebraska line, South to Sabetha, KS. The project was exciting in many ways. First, this contract was let as an alternate bid project taking concrete vs. asphalt. Koss was successful in securing the contracts with a 4” concrete overlay. Second, we were excited to showcase another application of concrete pavement in Kansas, by performing a 4” overlay on a 2-lane highway, under traffic. Things became even more exciting as the project got underway. Once the existing asphalt roadway was milled in preparation for the concrete overlay, it quickly became clear that the underlying asphalt pavement would be unsuitable to handle a thin concrete section. Koss and KDOT came together and deemed the best solution would be to reconstruct the highway using 8” dowel jointed concrete pavement.