This story is free to read. Traffic report: Exit 345 closed on I-75 NB in Catoosa County 0 Comments traffic-report-exit-345-closed-i-75-nb-catoosa-cou traffic-report-exit-345-closed-i-75-nb-catoosa-cou By Staff Report June 13, 2014 1 min read Exit 345 is closed on I-75 NB in Catoosa County. There are no traffic backups reported at this time.