sentences:  The Bristol Trust attempted to turnpike the western half of the upper road, but faced opposition from colliers at Kingswood, and it was not fully completed until the 1740s.By the 19th century, the Upper Bristol Road to Kelston was described as a "pleasing and nearly level ride".When roads were first numbered in 1923, the A431 formed the full extent of the upper Bristol – Bath turnpike as far as the old Post Office at the corner of George Street and Milsom Street.