The Dallas / Fort Worth area is mostly on a grid system, kinda. Just ignore the direction indicators on the highway signs, because they will not often match the compass. Example: SH121 leads E-NE to W-SW, but is considered a North / South freeway. Almost all of the freeways have three or more names, and any of said names are acceptable for use on addresses.

MAPSCO is the best mapping company out there, but they are limited to only a small number of cities. Nope sorry, Norfolk is not one of them.