AN A320 PIC'S RPT ON TAXI CONFUSION AT NIGHT AT MEM WHERE THE ARPT CONSTRUCTION ACTIVITY TURNS THE TAXI OP INTO A 'MAZE.'

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WE CONTACTED MEM GND CTL AT SPOT XX FOR TAXI IN MEM. GND CLRED US TO RWY 18L VIA TXWYS J; D AND C. MY FO READ THIS BACK. WE COULD SEE TXWY J ON THE 10-9 AND TXWYS D AND C APPEARED PARTIALLY CLOSED DUE TO CONSTRUCTION. WE CHKED THE 10-8 (YELLOW TEMPLATE) PAGE; IT SHOWED TXWYS D AND C AS OPEN ABEAM RWY 18L GOING N ON TXWY J. (TAXIING IN MEM WITH ALL OF THE CONSTRUCTION IS LIKE GOING THROUGH A 'RAT MAZE' AT BEST.) WE TAXIED N ON TXWY J AND WE NOTICED SMALL CARGO ACFT PARKED OFF TO THE SIDE OF TXWY J BTWN TXWY K AND ON TURN AT TXWYS C AND D. AS WE WERE PASSING TXWY K; GND CTL TRIED TO GET US TO TURN ONTO TXWY K; HOWEVER WE WERE ALREADY PAST THE TURN. WE WERE ALLOWED TO CONTINUE AS PREVIOUSLY CLRED TO RWY 18L. I GUESS AT NIGHT THEY DON'T USE TXWY J FROM TXWY K TO TXWYS C AND D BECAUSE OF THE CARGO OPS GOING ON NEARBY. IT WAS A SATURDAY NIGHT SO NONE WERE UNDERWAY. I DID NOT DISCUSS THE GND CTLR'S CLRNC AFTER HE TRIED TO TURN US ONTO TXWY K AS HE WAS FAIRLY BUSY AND OTHER ACFT WERE HAVING DIFFICULTY WITH THE NUMEROUS TXWY CLOSURES. WE HAD 4 ACFT GOING TO THE SAME RWY VIA 4 DIFFERENT RTES. MEM IS LIKE A MAZE DUE TO THE CONSTRUCTION; ESPECIALLY AT NIGHT.