Infrastructure monitoring devices, systems, and methods

An infrastructure monitoring assembly comprising:

• a fire hydrant, the fire hydrant defining a nozzle, the nozzle defining external threading at a nozzle end of the nozzle;
• a nozzle cap, the nozzle cap comprising a metallic material, the nozzle cap defining a first nozzle cap end and a second nozzle cap end, a threaded bore extending into the nozzle cap from the second nozzle cap end to a bore shoulder defined between the first nozzle cap end and the second nozzle cap end, the threaded bore engaging the external threading, a gasket contacting the nozzle end and the bore shoulder in sealing engagement and sealing a nozzle bore of the nozzle;
• an antenna cover attached to the nozzle cap, the antenna cover comprising a non-metallic material, the antenna cover defining a first antenna cover end and a second antenna cover end, the first antenna cover end defined opposite from the second antenna cover end, the second antenna cover end positioned between the first nozzle cap end and the bore shoulder of the nozzle cap, the second antenna cover end positioned between the first antenna cover end and the second nozzle cap end;
• and
• an antenna covered by the antenna cover.