A bit of a roundabout way southbound until an interchange is built but you can now bypass Hermosillo to the east (although you exit to the west). The exit is at N 29.189038 W 110.921777. You have to make a U-turn shortly after at N 29.182861 W 110.929671. Head east and cross over 15D and exit northbound back towards Nogales onto it. The exit onto the bypass is at N 29.185758 W 110.920820. I believe the south junction with 15D is at N 28.900522 W 110.950781
Someone recently put up a nice southbound video here
https://www.youtube.com/watch?v=ezqO2x8tEcQ