Kerala Highway Research Institute (KHRI) is the only research institute under the Kerala Public Works Department and was established in 1972 in Barrack Building at Palayam. It was shifted to the present campus at Kariyavattom in 1994. KHRI functions as a part of the Design Wing of PWD under Chief Engineer(Design) with necessary monitoring and guidance from  Director(R&PPU). The institute is headed by Joint Director.

The institute undertakes various applied research in the field of infrastructure development and plays a key role in material testing and quality improvement training programmes. The institute serves as a third tier testing laboratory for Govt. agencies like CTE, Vigilance etc.