TAXI MECH HAD TROUBLE AROUND THE AREA CLOSED FOR CONSTRUCTION AT ORD.

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THIS LETTER IS TO PROVIDE INFO ABOUT A SAFETY ISSUE AT ORD ARPT. DURING CURRENT OPS; THE RWY 32R HOLD PAD AND TXWY P ARE CLOSED DUE TO CONSTRUCTION. B BRIDGE TO RWY 32R TO TXWY H IS AN ALTERNATE RTE CURRENTLY IN USE. THE USE OF THIS RTE AT NIGHT OR DURING LOW VISIBILITY CONDITIONS COULD LEAD TO A SERIOUS ACCIDENT. AFTER A RWY INCURSION IN SEP/99 AND SUBSEQUENT CONVERSATIONS WITH OTHER TAXI AND FLCS; THESE SAFETY FACTORS HAVE COME TO MY ATTN: 1) ACFT LNDG ON RWY 9L; AND TAXIING ACFT USING THE ALTERNATE TAXI RTE; ARE COMING NOSE-TO-NOSE ON RWY 32R OR TXWY P; CAUSING THE ACFT CLRING RWY 9L TO STOP ON THE RWY. 2) AT NIGHT AND DURING POOR VISIBILITY; THIS PROB IS COMPOUNDED BY NOT BEING ABLE TO SEE THE APCH END OF RWY 9L FROM YOUR POS ON RWY 32R PRIOR TO TURNING ONTO TXWY H. 3) THE TIMING FOR TURNING ONTO TXWY H FROM RWY 32R IS CRITICAL IN THAT ENOUGH TIME OR SPACING MUST BE ALLOWED FOR TFC LNDG ON RWY 9L TO CLR THE RWY. I FEEL THE TEMPORARY TAXI RTE SHOULD NOT BE USED AT NIGHT OR DURING LOW VISIBILITY CONDITIONS. THIS RTE HAS THE POTENTIAL TO BE THE CATALYST OF A CHAIN OF EVENTS LEADING TO A VERY SERIOUS ACCIDENT.