Orange and Alexandria Railroad: [
www.fairfaxcounty.gov]
Gsearch [Orange and Alexandria Railroad Culvert] [
www.google.com]
Found via: [
www.atlasobscura.com]
Here's some info about the trestle you may find mentioned in some of the articles above:
The Orange and Alexandria Railroad Trestle at Accotink Creek: [
www.theclio.com]
Gsearch [Orange and Alexandria Railroad trestle] [
www.google.com]
"
This picture is widely reported as being of the original Accotink Bridge, and it is included on several markers. However, other sources dispute the claim. The picture, taken by Matthew Brady or one of his associates, is simply labeled "Cars of U.S. Military R. R., and bridge built by Soldiers. Orange and Alexandria R. R." by the National Archives."
-- [
www.theclio.com]