Complex sentence: It is also unique in that it runs in a below-grade trench for part of its length, although it has no subway components and does not run in an expressway median, it also includes grade segments and crossings at the northern portion of the line.
Split into simpler sentences: It is also unique in that it runs in a below-grade trench for part of its length, although it has no subway components and does not run in an expressway median. It also includes grade segments and crossings at the northern portion of the line.