This story is free to read. Traffic partially blocked on I-75 North in Bradley County I75 tile I75 tile By Staff Report March 24, 2015 1 min read According to TDOT, there is highway maintenance occurring at mile marker 31 on I-75 northbound in Bradley County today. Northbound traffic is affected with the roadway partially blocked. The road is expected to be cleared by 2 p.m. today.