Forum Discussion
pulsar
Sep 04, 2015Explorer
jaycocamprs wrote:pulsar wrote:
Here are some numbers for the Bunches Bald tunnel.
Height at the edge line: 10' 6"
Height at the center line: 18' 4"
Height 1' from edge line: 11.98'
Height 2' from edge line: 13.31' - Driver's side is on center line.
Height 3' from edge line: 14.48'
Note: I made the following assumptions:
- The shape of the top of the tunnel is parabolic.
- The minimum and maximum heights Min. Has post on www.blueridgeparkway.org are accurate.
Tom
www.virtualblueridge.com lists them at
458.8 Lickstone Ridge Tunnel Length 402' Min. Height 11' 1" Max. Height 13' 1"
459.3 Bunches Bald Tunnel Length 255' Min. Height 10' 6" Max. Height 13' 4"
I don't know which is right, but at less than 13'6" max I wouldn't try.
I've been through the Bunches Bald Tunnel (in a car.) Although I didn't measure the height, I assure you it was more that 13' 4'' tall, in the center.
If you go to the National Park Service site, you will see that they list the Bunches Tunnel height as Max = 18' 4", Min = 10' 6", the values I used in my calculations.
Wikipedia gives the heights that you do, but have a not that one should rely on the heights provided by NPS, and provide a link in the footnotes.
Incidentally, the NPS site lists Lickstone Ridge tunnel heights as 18' 1" and 11' 1".
Tom
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