AN ACR MLG MISSED A TURN WHILE TAXIING.

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WE WERE CLRED TO TAXI TO THE BRAVO HOLD POINT; FOR DEP ON RWY 9. WE WERE SUBSEQUENTLY CLRED (FROM THE BRAVO HOLD POINT) TO TAXI TO RWY 9 VIA TXWY B AND S-1. I PROCEEDED TO TAXI ALONG TXWY B; TRYING TO PAY PARTICULAR ATTN TO THE XING OF THE EXTENDED CTRLINES OF RWYS 9 AND 4L (SINCE I WAS WELL AWARE; FROM PREVIOUS EXPERIENCE; HOW POORLY THE CROSS-TXWYS ARE MARKED ALONG THIS RTE -- THEY ARE NOT MARKED AT ALL). I HAD ALREADY BRIEFED THAT WE WOULD NEED TO BE ESPECIALLY VIGILANT DUE TO THE BLOWING SNOW AND LACK OF CROSS-TXWY MARKINGS. WE BOTH HAD THE ARPT DIAGRAM IN FRONT OF US AND BOTH MONITORED THE TAXI PROGRESS. NEVERTHELESS; WHEN I TURNED L ONTO WHAT I THOUGHT WAS TXWY S-1; WE IMMEDIATELY DISCOVERED THAT WE HAD PASSED UP TXWY S-1 AND HAD INSTEAD TURNED ONTO TXWY S. THIS TXWY ALSO LEADS TO THE THRESHOLD OF RWY 9; MERGING WITH TXWY S-1 AT THE THRESHOLD. THERE WAS THEREFORE NO DANGER; NOR CONFLICT. WE DID; HOWEVER; TAXI VIA A RTE OTHER THAN WHICH WE WERE CLRED. CONTRIBUTING TO THIS MISTAKE; I BELIEVE; WERE 3 FACTORS: 1) EVEN THOUGH THERE WAS NO PRECIPITATION AT THE TIME OF OCCURRENCE; THE STRONG WIND AND SNOW BLOWING ACROSS THE TXWYS;WHEN COMBINED WITH NIGHT CONDITIONS; SIGNIFICANTLY RESTR PAVEMENT SURFACE VISIBILITY. 2) RESIDUAL DEICING FLUID ON THE SURFACE OF THE L; SIDE COCKPIT WINDOW RESTR VISIBILITY TO THE L. AND 3) THE MOST SIGNIFICANT CONTRIBUTING FACTOR IS THE LACK OF CROSS-TXWY MARKINGS FOR BOTH TXWY S1 AND TXWY S. IN RETROSPECT; I SHOULD HAVE HAD THE SIDE WINDOW WIPED CLR; BUT ALL ELSE; WITH REGARD TO MY ACTIONS; WAS EXACTLY AS I BELIEVE IT SHOULD HAVE BEEN. THESE PARTICULAR TXWYS SHOULD BE BETTER MARKED.