- Todd’s Railfan Guide to Railroad Bridges (railroadsignals.us)
I started this page after completing a page for Detroit that covered the majority of bridges and overpasses found in the metro area. This is an introduction to the many varieties of railroad bridges that exist, and some that are no longer with us. For further reading, check out some of the links I have come across.
- Perceiving further, that in order to understand these relations I should sometimes have to consider them one by one, and sometimes only to bear them in mind, or embrace them in the aggregate, I thought that, in order the better to consider them individually, I should view them as subsisting between straight lines, than which I could find no objects more simple, or capable of being more distinctly represented to my imagination and senses; and on the other hand, that in order to retain them in the memory, or embrace an aggregate of many, I should express them by certain characters the briefest possible.