Yes it's true that the Romans lined the Appian Way with crosses that stretched for miles, as they crucified the slaves of the Spartacus revolt. But that has nothing to do with the sacrifice of Jesus.
Jesus was horribly tortured before the actual crucifixion. And He took the weight of our sins on His shoulders. When He hung on the cross, he experienced the terrible despair of separation from the Father God. Our sins which Jesus voluntarily took unto himself, made the Father God turn away from Jesus -- this is Christian theology and someone could surely phrase it better than me. But a Holy God separated himself from Jesus, withdrew His comforting presence from His Son, because Jesus was polluted with sin, our sins, as He hung on that cross. When Jesus paid that ultimate price for our sins and defeated death and triumphed with the Resurrection, then we triumphed with Him.
Scripture please.