A320 FO BELIEVES ATIS AT ORD FAILS TO PROVIDE ADEQUATE RWY REMAINING INFORMATION WHEN LESS THAN FULL LENGTH IS AVAILABLE.

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DURING TAXI FOR TKOF WE WERE RE-ASSIGNED RWY 32R. WE TAXIED TO AND DEPARTED RWY 32R. ATIS INFO INDICATED RWY 32R AS A DEP RWY; ALONG WITH RWY 32L FROM INTXN T10 WITH AVAILABLE RWY REMAINING. ATIS ALSO PROVIDED OTHER INFO REGARDING BIRDS; GND OPS OF XPONDER ETC. HOWEVER -- ATIS DID NOT STATE THAT THE FULL LENGTH OF RWY 32R WAS NOT AVAILABLE. AFTER DEP; AND A SECOND REVIEW OF THE SEEMINGLY ENDLESS NOTAMS; IT BECAME APPARENT THAT THE FULL LENGTH WAS NOT AVAILABLE; AND AN ALTERNATIVE PERFORMANCE CODE SHOULD BE USED TO OBTAIN WTS/SPDS FOR RWY 32R. WE RE-RAN THE NUMBERS AND VERIFIED THAT; INDEED; OUR PERFORMANCE NUMBERS WERE ADEQUATE EVEN GIVEN THE REDUCED RWY LENGTH. MY POINT: ATIS SHOULD SPECIFY THE CLOSURE OF A CERTAIN LENGTH OF A RWY -- PARTICULARLY SINCE THEY ARE YIELDING THAT INFORMATION FOR ANOTHER RWY ALSO IN USE. I RECOGNIZE THAT THE NOTAMS ARE A RESPONSIBILITY; BUT GIVEN THE POTENTIAL SIGNIFICANCE FOR THE ISSUE AT HAND; THE ATIS SHOULD EMPHASIZE THE CHARACTERISTICS OF ALL RWYS IN USE.