Very interesting connection, MPJ. It also occurs to me that the STREAM that the bridge crosses in each instance is also a potent symbol -- not only of separation, but also of the passing time. We see a stream in many key scenes in the movie -- especially in the later scenes as they grow older. The sound of the stream is clearly heard in the scene of the first reunion up in the mountains. It is also prominent in the scene where Ennis and Jack argue and fight while washing dishes.
Of course, camping near a stream is expected. But I also sense a double meaning in the symbol of flowing waters in each successively later scene. It is significant that we see no such scene in the end. This is hardly surprising, as Ennis probably never goes camping up the mountains by himself after Jack's death. But it also seems to indicate to me that time had run out for the two of them.
Yes,you're right;we can see water,but also fire in several of the scenes,specially between the both of them.Of course,as you say,is expected camping near a stream, the same that lighting a bonfire in the campside;but in this case,could it be like a representation of their own and different way of being?.Water and fire,the same than air and earth,means the elements that represents the way of react and behave of human beings; some are opponents,some other are complementaires,like ying and yang.like Ennis and Jack themselves...
Someone said once in the forum that(specially in the scene when Ennis tells Jack his traumatic childhood experience) that water runs from one to the other; and I'd add that this also happens in this scene when they argue near the river for Jack's wishes of a "sweet life together".It's like a strength,like something that joins them but at the same time,is able to separate them,like water can carry whatever you throw on it and separates it from you,does this make sense?.
And it's very interesting also what you say about water in their last encounters; I had never thought in that lack of water after Jack's death could perfectly mean that time had run out for the two of them...Thank you again for making me think it over¡.Yes,water doesn't run because time is over too,no?,there's already no future for them.Talking about time and water,haven't you noticed that,the younger they are,the quicker water seems to flow?And that,when they are older,they usually are into the water,as if they let themselves be carried for water,it's to say,for society's rules?.And that,in their last confrontation,water remains strangely quiet,like a premonition that their relationship is going nowhere,so nowhere that soon it would be over?.Wow,too many questions and too boring,I know,but it seems astonishing for me¡.