If you look at Sprint's site with towers, you'll notice that data speed upgrades at that intersection, and nearby areas. I work a few blocks down. Nearly all of Feb I've had serious voice issues incoming/outgoing. At times people I called on the other end kept telling me they could barely hear me, and I sound like I was on a speaker phone, and there were many times where I had an extremely hard time hearing someone on my end. It was so bad, it got to some points where I was nearly yelling into the phone asking them to speak up, and was getting a lot of static, along with the voice sounding like it was about to go out. I also experienced a couple of dropped calls. This last week and half improved big time! Clear voice on both ends, and faster 3G speeds, in which I've also noticed most of last month.
In Sprint Forums, I went into the "Network" forum, and mentioned these issues twice in a 2 week span, giving address, cross streets, etc. A Sprint rep/tech responded saying, "No tower issues in your area. Sorry for the inconvience." BS! Something is going on! I knew it was NV being upgraded, after reading way before hand what issues these upgrades will cause to services.