The route existed as a simple track since the Irish monk
St Maelrubha founded a monastery at Applecross. Construction of the road started in May 1818, but the first contactor only lasted three months. John Reid & Son from Edinburgh finally completed the construction in September 1822. The road cost around £4000, or about £0.5m in 2020 prices, but the landowner received a 75% government grant to construct it. The Bealach na Ba road was unsurfaced rough gravel until the 1950s, making it difficult to clear of snow in the winter, so sometimes for weeks the only transport to Applecross was by Ferry. Between 1956 and 1958 the road was upgraded, with the road levelled and surfaced with tarmac, plus three of the hairpin bends at the top were widened. In 2025,
The Daily Telegraph wrote that Bealach na Bà had become a "worldwide motoring phenomenon". ==In popular culture==