Norwegian County Road 755 in the context of Indre Fosen Municipality

The Skarnsund Bridge (Norwegian: Skarnsundet bru or Skarnsundbrua) is a 1,010-metre (3,310 ft) long concrete cable-stayed bridge that crosses the Skarnsundet strait in Inderøy Municipality in Trøndelag county, Norway. When finished in 1991, it replaced the Vangshylla–Kjerringvik Ferry and it gives the communities in Indre Fosen Municipality easier access to the central areas of Innherred. The bridge is the only road crossing of the Trondheimsfjord, and is located along Norwegian County Road 755.

The bridge has a span of 530 metres (1,739 ft), making it the longest of its type in the world for two years. The two 152-metre (499 ft) tall pylons are located at Kjerringvik on the west side, and at Vangshylla on the east side. Following the opening, there was a seventeen-year collection of tolls, needed to finance 30% of the 200 million kr investment. In 2007, the bridge was listed as a cultural heritage. In 2012, Mosvik Municipality and Inderøy Municipality (located on either side of the bridge) were merged to form one large municipality of Inderøy.