Complex sentence: The Highways Agency are currently planning improvements to the M57's junction with the M62 that would provide free-flow links between the M57 and the M62 east of the junction which would directly connect the M57 to the rest of England's motorway network.
Split into simpler sentences: The Highways Agency are currently planning improvements to the M57's junction with the M62 that would provide free-flow links between the M57 and the M62 east of the junction. This would also have the effect of directly connecting the M57 to the rest of England's motorway network.