B737-300 FLT CREW INCURS ON APCH PATH TO RWY 21 AT ABQ.

Narrative

WE WERE CLRED TO TAXI TO RWY 21. WE HELD SHORT OF RWY 8/26; AND THEN WERE CLRED IMMEDIATELY ACROSS TO TXWY E TO RWY 21. THE FO WAS WORKING THE NEW NUMBERS; I DINGED THE FLT ATTENDANTS AND THROTTLE BURST; REVIEWED THE NUMBERS; AND STOPPED AT A HOLD SHORT LINE. I ASKED THE FO IF THEY THOUGHT THIS WAS THE RWY HOLD SHORT LINE. WE BOTH AGREED THAT IT WAS NOT. THERE WERE NO RED RWY INDICATORS AND JUST ILS OR APCH SIGN BY THE HOLD SHORT LINE. I TALKED MYSELF INTO CONTINUING AND INCURRED THE RWY 21 APCH ZONE. I REALIZED MY ERROR JUST BEFORE TWR POINTED OUT TO ME AND ASKED IF I COULD TURN R INTO POS AND HOLD. WE DID THAT AND WERE CLRED FOR TKOF. TWR DID NOT SEEM TO HAVE A PROB WITH OUR ACTION. WE WERE RUSHED; WE WERE BUSY; AND I STOPPED AT THE HOLD SHORT LINE. AFTER DISCUSSION; I TALKED MYSELF OUT OF THIS REALLY BEING THE RWY HOLD SHORT LINE. I HAVE TAKEN OFF THIS RWY MAYBE TWICE BEFORE SINCE IT'S BEEN BUILT. I KNEW IT WAS A CONFUSING AREA BUT HAVE NOT HAD ANY PROBS BEFORE. AFTER TKOF; I READ THE COMMERCIAL CHART PAGE CLOSELY AND NOTICED THE CAUTION. THE SIGNAGE AT THIS HOLD SHORT LINE IS NOT LIKE ANYTHING I'VE SEEN AT ANY ARPT IN OUR SYS. THE RWY IS 120 DEGS BACK BEHIND YOU WHEN YOU GET THERE; AND IS VERY CONFUSING. OBVIOUSLY; THE NOTE IN THE COMMERCIAL CHART PAGE ALLUDES THAT IT HAS BEEN DONE BEFORE AND; IN MY OPINION; IT WILL HAPPEN AGAIN.