Bridge, river and a shoe

There's a river flowing out there:
A bridge was risen above the river,
It gives a path to newer place.
The river would be bound by the shape of the shore,
It will never give you a repeated though.
A fishing rod, forgotten by a man,
Whose son has just passed an exam.
In euphory he has run home, leaving the rod
                              on the shore,
Which is waiting for its special fish, so it can
                              be brought home.
River - symbol of eternity,
Perpetum mobile from a certain view.
There's an old soldier shoe in the waters:
Shoe has drawn all the attention,
Even sun tries to dry it,
But it's just leather, which will not come back
Or thank you
Like the person, which you've given up with.