North Salt Lake??

Ok so does anyone know where on earth North Salt Lake is?? Saturday night (hold on..just for the record all of you that are laughing...my husband & I did not grow up in Utah) so were on our way to a wedding reception in North Salt Lake. I have the address in my hands Kyle is driving. Were heading down I-15 and Kyle says which exit do I get off at, opps to late it was that one we just passed. So we get of at the very next exit and just head to 300 E or something. Isn't all of Utah just a grid system...right. So we get to the corrdients on our address card and were in the middle of these weird buildings, no where on earth that a reception could possibly be. So we drive around thinking that were not quite in N. Salt Lake so we head up the hill and the road starts going into some mountain neighborhoods this can't be right. So we end up back on I-15 going back to the original exit because there are step by step directions. We get off the correct exit and then it says that the 1st light will be something like garden dr. and were supposed to turn right and go through a round-about. However that is not the case its some other street so we go a little further up and after about 2 hours of driving around Leyton has had it and the reception is over so we decide to call it a night and go get some dinner. So is North Salt Lake around that gross mountain by towards bountiful?? Well we will never know cause we gave up...hope she had a great wedding!