noun
Refers to the building or development of roads, including planning, engineering, and physical construction.
新しい道路建設の計画が発表された。
A plan for new road construction was announced.
道路建設には多額の費用がかかる。
Road construction requires a large amount of money.
道路工事 refers more broadly to road work or maintenance, while 道路建設 specifically emphasizes the construction of new roads.
Compound of 道路 (road) and 建設 (construction).