Initially, the primary mode of transport of the coastal areas between Sydney and Brisbane was by boat. From the roads radiating out from the port towns, the intervening hills were eventually crossed to create a continuous route along the coast, but this did not occur until the first decade of the 20th century. By contrast a continuous inland route from Newcastle to Brisbane via the Northern Tablelands had been in existence since the 1840s. A direct coastal route between Sydney and Newcastle was not completed until 1930, and completion of the sealing of the Pacific Highway did not occur until 1958 (at Koorainghat, south of Taree). The last of the many ferries across the coastal rivers was not superseded by a bridge until 1966 (the Harwood Bridge across the south channel of the Clarence River – the north channel had been bridged in 1931).