Thursday, July 30, 2026

1878+1962 NS/Southern/CNO&TP Nemo Tunnels #22, #23 and #24 near Wartburg, TN

Old #22: (Archived Bridge Hunter; Bridge Hunter; Satellite, south portal. Note bridge pier just south of the portal.)
1929 Pedestrian Bridge: (Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)


1 of 29 photos posted by Matt Murphy
Nemo Tunnel last week [Jul 2026]— at Nemo Tunnel.
[Note that the tunnel provides plenty of clearance for double-stack container cars.]

I think Matt was at the south portal of New #24.
"First Train", company photographer via BridgeHutner_new_#24

The old tunnels were built in 1878. The were 15' (4.6m) wide and 20' (6m) high. In 1962, they were bypassed by tunnels that were 20' (6m) wide and 30' (9.1m) high. Old #24 was replaced by an adjacent New #24. Old #22 and #23 were replaced by New #22 and a new bridge on a new alignment. The right-of-way with the new tunnels is in purple in this map. The tunnels marked with dashed black lines are the old tunnels.
1980/88 Lancing Quad @ 24,000

In addition to building new tunnels, a lot of dirt was moved. This view of the north portal of New #24 also shows the new NS bridge over the Emory River.
company photographer via BridgeHutner_new_#24

Looking the other way along the bridge, we se the south portal of New #22.
2012 photo by Shane Passmore via BridgeHunter_new_#22

1906+1927 Nemo Bridge


There is a third span hidden in the trees because over half of this bridge is over a flood plain.
Street View, Sep 2015

It is faint, but we can see the third truss in this photo.
BridgeHunter_pedestrian

I think 1923 is a late date to still be building a pin-connected bridge.
2010 photo by Calvin Sneed via BridgeHunter_pedestrian

RedGlobeReflections

We can see a hint of the third truss in this photo.
2010 photo by Calvin Sneed via BridgeHunter_pedestrian

1 comment:

  1. The Nemo Tunnels are a fascinating piece of railroad history, showing how engineering has evolved alongside the needs of modern transportation. The contrast between the original 1878 tunnels and the larger 1962 replacements is a great reminder of how rail infrastructure adapts over time. It’s amazing that these tunnels still serve such an important role while preserving a connection to the past. Stories like this make old railway routes come alive and show the incredible work behind every mile of track. More interesting finds can also be explored here: morospin casino.

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