Jerr - composition on those pics (esp the bridge one) are great. The first and last really tell a story.
Shooting snow is hard, because you have the darkness of the shadows and the brightness of the snow/sky. You can tell that your light metering was done of the bridge because the sun and sky are so over exposed. Are you shooting with a DSLR? Tripod? i dabbled in HDR awhile back, which is really fun if you can get it right but it accounts for a high dynamic range (light-dark, its what 'HDR' stands for) by utilizing multiple exposures, usually 1 'prime' exposure then a couple 1-2 steps over exposed and 1-2 steps under exposed. Obviously this does not work with moving targets but when done properly it looks amazing.
Here's a good example, you get alot of the details in the dark ranges with having 'blown out' lights.