Skip to main content


Date Innovations City Country State Society
between 1842 and the Baltimore & Ohio Roundhouse & Shop Complex Martinsburg USA WV ASCE
1870 Fink Deck Truss Bridge Lynchburg USA VI ASCE

We hope you enjoyed this essay.

Please support this 70-year tradition of trusted historical writing and the volunteers that sustain it with a donation to American Heritage.


Stay informed - subscribe to our newsletter.
The subscriber's email address.