A cable barrier system is managed by a cable barrier management system including a management system controller having a management processor, a wireless data communications interface, and a plurality of turnbuckle subsystems configured to be joined to respective barrier cables to provide pretension. Each of the turnbuckle subsystems has a strain gauge mounting zone and is configured to enable communication of strain from a strain gauge circuit to the management processor. The management system controller includes a sensing circuit to receive the strain gauge output voltage from the strain gauge circuit and provide sensing circuit output to the management processor. The management system controller includes a cable barrier analysis module configured to determine excess strain events. The management processor generates strain event data, which is sent via the wireless data communications interface to a remote recipient computing device.