The Jungbu Naeryuk Expressway (Korean: 중부내륙고속도로; literally meaning Central Inland Expwy.)

Numbered 45, it was first constructed in three parts: connecting Yangpyeong to Chungju and Sangju to Gimcheon and Hyeonpung to Changwon.

The part of the expressway between Chungju and Sangju was completed at the end of 2004, with the last remaining section being that between Gimcheon and Hyeonpung.

The Jungbu Naeryuk Expressway Branch Line (a.k.a.

Guma Expressway) is route number 451 and connects Hyeonpung to N. Daegu.