Complex sentence: About a hundred and fifty yards from its confluence with the Dee, the Lui Water is bridged by a public road at the Linn of Lui that leads (roughly E) towards Mar Lodge and Allanaquoich, and (roughly W) towards Linn of Dee.
Split into simpler sentences: About a hundred and fifty yards from its confluence with the River Dee, the Lui Water is bridged by a public road at the Linn of Lui. This public road that leads (roughly E) towards Mar Lodge and Allanaquoich, and (roughly W) towards Linn of Dee.