Complex sentence: The A59 trunk road and Leeds and Liverpool Canal pass through Burscough and the A5209 brings large volumes traffic through the town from where it connects to the A59 both the A5209 and A59 were so congested that Lancashire County Council described the town as suffering from severe congestion.
Split into simpler sentences: The A59 trunk road and Leeds and Liverpool Canal pass through Burscough and the A5209 brings large volumes traffic through the town from where it connects to the A59. Unfortunately, both the A5209 and A59 are currently so congested that Lancashire County Council described the town as suffering from severe congestion.