Just so people know--the museum and the factory both have Broadway addresses but they are not on the same street.
Coming into downtown from the direction of the airport on 26, take the Merrimon Ave exit. If you want the museum, take a left at the light at the end of the ramp. That is actually Broadway, for the space of about six blocks. Look for the museum on your left before you pass Walnut.
If you want the factory, however, make the left on Broadway and then immediately a right on Woodfin, the first light. Go down the hill one block and make your first right on... Broadway. (Lexington changes its name to Broadway at that intersection but I don't remember what the street signs say.) Anyway, go back under 26 and you'll see the factory on your right.
You really can't miss it.