An old man, going a lone highway,
Came, at the evening, cold and gray,
To a chasm, vast, and deep, and wide,
Through which was flowing a sullen tide.
The old man crossed in the twilight dim;
The sullen stream had no fears for him;
But he turned, when safe on the other side,
And built a bridge to span the tide.
“Old man,” said a fellow pilgrim, near,
“You are wasting strength with building here;
Your journey will end with the ending day;
You never again must pass this way;
You have crossed the chasm, deep and wide-
Why build you a bridge at the eventide?”
The builder lifted his old gray head:
“Good friend, in the path I have come,” he said,
“There followeth after me today,
A youth, whose feet must pass this way.
This chasm, that has been naught to me,
To that fair-haired youth may a pitfall be.
He, too, must cross in the twilight dim;
Good friend, I am building the bridge for him.”
-Will Allen Dromgoole

When talking about bridges, Jesus is the first that comes to my mind. He is the one mediator that builds the bridge from us to the Father. By him, we can go into God.