[PRCo] Re: Blacks Bridge

[Bob Rathke]

Tunnel daylighting became common in the 1960's as railroads began to 
transport high truck trailers on flatcars, and later, double-stack freight 
containers.

Bob 3/6/06

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----- Original Message ----- 
From: "Fred Schneider" <fwschneider at comcast.net>
To: <pittsburgh-railways at dementia.org>
Sent: Monday, March 06, 2006 3:57 PM
Subject: [PRCo] Re: Blacks Bridge


>I fail to see how a bridge can replace a daylighted tunnel but a
> bridge can be over a cut that replaced a daylighted tunnel.
>
> A "daylighted" tunnel is one which had the roof (aka ceiling) removed
> and was turned into a cut.
>
> On Mar 6, 2006, at 3:10 PM, Matt Barry wrote:
>
>> Take a look at the photo of a Carnegie car going over Blacks Bridge.
>> The caption states that the bridge replaced a "daylighted tunnel."
>> What is a "daylighted tunnel?"
>>
>> Matt
>>
>> http://www.davesrailpix.com/pitts/htm/wvp082.htm
>>
>>
>>
>
>