This paper presents the restoration of the Nin Bridges, which link the historic core and the center of Nin with the rest of the city. The historic town of Nin, situated on the Croatian coast, has been the seat of the Bishopric of Nin since the 9th century. Since antiquity, Nin has been connected to the mainland at the location of the current Lower Bridge, initially by a wooden structure, and later, during Roman times, by a stone bridge. The Romans also constructed the Upper Bridge, which is likewise a stone structure. The bridges are primarily composed of embankments, faced, and supported by stone walls, with three stone arched openings on each bridge facilitating the flow of water and sea currents within the bay. These bridges are distinctive, unique structures and integral components of the city’s cultural and historical ensemble, protected as cultural heritage. Both ancient bridges sustained significant damage in September 2017 due to a catastrophic flood that could not pass through the narrow stone arch openings, leading to considerable structural damage. Spegra Ltd. from Split, Croatia, undertook the restoration of both bridges, enhancing their mechanical resilience and stability while restoring their original appearance and their role as key elements in the visual landscape of Nin. This paper provides a detailed insight of the restoration work conducted on both bridges.