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Nostalgia & History > Double-track tunnels: ever timber lined?


Date: 02/10/19 13:38
Double-track tunnels: ever timber lined?
Author: timz

Do we know of any tunnel with two or more tracks
that was timber lined, as lots of single-track
tunnels were? (Evan mentioned the SFe tunnel
at Richmond-- his pics show it was double track,
so was it timber lined?)



Date: 02/10/19 15:41
Re: Double-track tunnels: ever timber lined?
Author: Evan_Werkema

You might enjoy browsing back issues of "This Point...in Time," the newsletter of the Point Richmond History Association.  They have a bunch of them online - scroll down their homepage to find them:

https://pointrichmondhistory.org/

Regarding the lining of Tunnel 5, have a look at Vol. XXVI, No. 5, pages 14 and 15, which has photos showing the west portals of both the rail and road tunnels through Nickols Knob back when the rail tunnel was double-track.  The rail tunnel sure looks timber-lined to me:

https://pointrichmondhistory.org/newsletters/XXVI-5.pdf



Date: 02/10/19 15:45
Re: Double-track tunnels: ever timber lined?
Author: timz

Thanks for that.

Lots of wood around the portal--
so how do we get the arch shape,
looking thru the tunnel?



Date: 02/11/19 08:59
Re: Double-track tunnels: ever timber lined?
Author: SN711

The Arch shape came about during the 1955 rebuild of Tunnel #5.

Very neat location for a tunnel.

Gary

Posted from iPhone



Date: 02/11/19 10:20
Re: Double-track tunnels: ever timber lined?
Author: timz

In Evan's pics in the other thread, looking thru the new tunnel, its roof seems to be semicircular.



Date: 02/11/19 11:32
Re: Double-track tunnels: ever timber lined?
Author: phthithu

SN711 Wrote:
-------------------------------------------------------
> The Arch shape came about during the 1955 rebuild
> of Tunnel #5.
>
> Very neat location for a tunnel.
>
> Gary
>
> Posted from iPhone

Has arch shape in this picture: https://thumbs.worthpoint.com/zoom/images1/1/1216/06/santa-fe-railroad-depot-tunnel-point_1_d4edbe4597d8ae3e63df5d77f9b87ea1.jpg

It's possible that bore itself was arch shaped and maybe unlined but the portals were rectangular due to timber lining being needed where there was looser rock, dirt and stuff.  



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