sentences:  In 1804 the Runcorn to Latchford Canal was opened, replacing the Mersey and Irwell Navigation; this cut off the northern part of the estate, making it only accessible by a bridge.The Grand Junction Railway was built across the estate in 1837, followed by the Warrington and Chester Railway, which opened in 1850; both of these lines affected the southeast part of the estate.In 1894, the Runcorn to Latchford Canal was replaced by the Manchester Ship Canal, and the northern part of the estate could only be accessed by a swing bridge.