Saving polys is important, kids and non-kids. This is something I really need to remember when making props.
This blog post is basically about how I took my bridge prop from being high poly to low poly in a grand total of about 5 minutes. The best thing about this is that the bridge still looks pretty much the same. Here's a comparison:
This is the high poly version, with a total of 1.1k faces (I know, I know :( ).
Then this is the low poly version, with a total of 191 faces:
Now other than the shape of the bridge's posts, its more or less the exact same shape. Realistically I should have ensured it was lower poly to begin with, but that's a lesson learned for the future!