After some tought, i believe that he was dead before reaching the hill, according to the church the cross was between 200 - 260 pounds heavy, and jesus maybe was 5 foot tall, 5 and a half maybe, since people back then was smaller in average, so a 132 pounds man, under the sun, carrying a 230 pounds wooden cross, with open wounds and barefoot, i doubt he made it alive to the hill seriously