National Route 5 is a national highway in South Korea connects Tongyeong to Jaseong. Due to the separation of Korean peninsula, it de facto ends in Cheorwon now. It established on 31 August 1971.
The section between Andong City and Daegu Metropolitan City is called the Gu-an National Road, a newly constructed four-lane road that serves as the main transportation network of Gyeongsangbuk-do. In addition, the expansion project from Yeongju City to Andong City has been completed.
It is characterized by being laid parallel to the former Guma Expressway and the Jungang Expressway among the Central Inland Expressway. It is also a route with high demand for travel between Danyang-gun and Jecheon-si in Chungcheongbuk-do, and Wonju-si in Gangwon Special Self-Governing Province and Hoengseong-gun, Hongcheon-gun, and Chuncheon-si. Most intercity buses from Wonju to Hongcheon use National Route 5. The section from Daegu to Changnyeong and Changwon in Gyeongsangnam-do has also been well-maintained with four lanes.
Currently, the construction of the Geoje-si ~ Changwon-si section including the Yi Sun-sin Bridge is being planned, and the previous Masan-si section started from in front of Masan City Hall, but the starting point has been changed to Geoje-si, and the Changwon-si section has been changed to Yi Sun-sin Bridge ~ Hyeondong Intersection ~ Ssaljae Tunnel ~ Jung-ri, Naeseo-eup.
Afterwards, as of June 22, 2021, the starting point was extended again to Donam-dong, Tongyeong-si, Gyeongsangnam-do.
IS: Intersection, IC: Interchange