Henryton Tunnel
From Underfoot
Q5731318
The Henryton Tunnel, located near Henryton in southern Carroll County, Maryland, is the third-oldest tunnel in the world that remains in active railroad use. Constructed by the Baltimore and Ohio (B&O) Railroad and opened around 1850, it was the first tunnel constructed on the B&O's Old Main Line. In 1865 the tunnel was widened to accommodate double track. It was rebuilt into its current form in 1903. The tunnel has brick portals and lining. The coping and footings are concrete.
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Location: 39.3512, -76.9128, KML, Cluster Map, Maps,
5 places
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Cross Ore Bank ⓘ
abandoned mine in Baltimore County, Maryland, United States of America -
Baltimore and Potomac Tunnel ⓘ
railroad tunnel in Maryland, a bottleneck of the Northeast Corridor -
Henryton Tunnel ⓘ
railway tunnel in Henryton, Maryland -
Howard Street Tunnel ⓘ
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Union Tunnel (Baltimore) ⓘ
underpass on the Northeast Corridor
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | mine | Cross Ore Bank | abandoned mine | Wikidata | |
| site | tunnel | Baltimore and Potomac Tunnel | railway tunnel | Wikidata | |
| site | tunnel | Henryton Tunnel | railway tunnel | Wikidata | |
| site | tunnel | Howard Street Tunnel | CSX Transportation, railway tunnel | Wikidata | |
| site | tunnel | Union Tunnel (Baltimore) | railway tunnel | Wikidata | |