It also depends on what the project proposes to do.
For a single course "mill and fill" (grind off the top course asphalt and pave a new layer oftop course), not much detail is needed. Mostly lengths, widths, pavement marking quantities, in-pavemtn signal detection hardware that may damaged by the milling, etc.
If you are planning a more involved rehabilitation or complete reconstrctuin, then much more detail is needed, such as cross slopes, profiles, locations of roadside objects, drainage structures and problems, etc.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust