What is the mailing address for the Coastal Bend Detention Center?

My fiancé was recently incarcerated at the coastal bend detention center but when I called they didn't giv my the address to write him letters. Can someone please give me the address. I found the physical address but sometimes a P.O. box is used so I want to be conpletely sure. I would really be extremely grateful since I am limited on talking to him on the phone. Since we are postponing the wedding due to his incarceration I would love to be able to write him multiple times a day & justlet him know what's going on & send pics of our little family. Thank you in advance.