Reinforced　concrete　arch　bridges　represent　iconic　and　enduring　engi-　neering　marvels　that　often　stand　the　test　of　time.　However,　their　long-term　dura-　bility　faces　an　increasing　threat　from　the　insidious　process　of　corrosion.　This　re-　view　paper　offers　a　comprehensive　analysis　of　the　corrosion＇s　effects　on　rein-　forced　concrete　arch　bridges.　It　explores　corrosion　mechanisms,　their　implica-　tions　for　structural　integrity,　assessment　techniques,　mitigation　strategies,　and　re-　cent　research　advancements.　©　The　Author(s),　under　exclusive　license　to　Springer　Nature　Switzerland　AG　2025.