Talk:Cobble Hill Tunnel

message: the photo in the article indicates that the roof of the tunnel is built in brick masonry, while the straight portion of the side walls is constructed from natural stone. Could anyone precise the building method and materials? What is the geology of Cobble Hill? And if there are any known sources: what were the conditions and methods used for construction? --Himbeerkuchen (talk) 09:37, 10 January 2013 (UTC)
replies: text: It was planned and built as a cutting and lined with stone. Then after 5 years they covered the cutting making it a tunnel. Hence the two different construction materials. 90.220.27.146 (talk) 12:26, 9 June 2016 (UTC)
thread_title: Construction

message: In metro it says:
:In 1850 the Long Island Rail Road bricked over the Atlantic Avenue Tunnel (which had been an open cut), carrying its line for about 500 m under the streets of Brooklyn (now part of New York City). Although sometimes called the "world's oldest subway tunnel", this had no stations and was used for long-distance as well as suburban trains.
Does anyone know when the tunnels on the New York and Harlem Railroad were made tunnels (if they were open cuts)? --SPUI (talk) 00:22, 9 Mar 2005 (UTC)
replies: text: 1872–1876, according to Joe Brennan. Choess 14:50, July 14, 2005 (UTC)
I really think that this tunnel is more like ones that go through a mountain, not ones that are built to take trains off the street.  Subways, IMO, are tunnels that are built specifically due to congestion/lack of room on the surface, and not because of topography.  
From the article: It was built to reduce the grade of the railroad line. Jason McHuff 22:38, 23 October 2007 (UTC)
thread_title: Untitled

message: I changed "oldest in the world" to "oldest in N.A.", the (now commented out) Ref it was cited from is a PhotoBlog and Blogs just are not as reliable as the London Transport Museum. May I also ask for a second opinion of the NRIS reference, for the life of me I cannot get it to find Cobble Hill by NRHP Reference#: 76001225 (I believe they have changed their database). Exit2DOS2000•T•C• 08:03, 2 April 2009 (UTC)
thread_title: References

message: Can somebody explain what "subway tunnel" actually means in the context of the claim that this is the oldest in the world. My reading of it (based on my knowledge of the American use of "subway") would be that this covers urban, underground tunnels caring passenger trains but excludes railroad tunnels bored through hills or tunnels that only carry goods trains. If so, the claim of priority would seem to be incorrect. If you read Tunnel#In history you will see that there were many railway tunnels prior to 1844. It seems likely that one or more of the three tunnels under Liverpool serving the Liverpool and Manchester Railway has priority. These are dated 1829 to 1836. It may well be that Cobble Hill does have some distinct claim to being the first of a certain sort of tunnel but this needs to be more clearly expressed and well referenced. --DanielRigal (talk) 12:01, 19 April 2009 (UTC)
replies: text: As I've always understood it, a "subway" tunnel is one that can only be used by specifically-designed passenger transit trains.  A standard railroad train could not use a subway tunnel due to clearances and regulations, even if it were a passenger train.  Subways are not connected to the national rail network (although some may have a rarely used connecting track for equipment deliveries and maintenance vehicles).  A railroad tunnel connected to the national rail network running under a city would not be a subway, it would simply be a railroad tunnel. Parcanman (talk) 16:28, 2 May 2010 (UTC)
replies: text: A subway has station(s) in it. This is just a tunnel. 188.222.174.87 (talk) 23:14, 11 March 2013 (UTC)

text: Daniel, you are right this interesting tunnel has no claim to any world first. You hit it with the two Liverpool rail tunnels that were built in 1830. The short 291 yd Crown Street tunnel, which serviced Crown Street station, with the first Edge Hill station at the other portal, and the Wapping Tunnel were both bored under streets and houses with the 1.26 mile long Wapping Tunnel being the first to be bored right under a Metropolis. Both were used until 1972 - a 132 years. The world's first underground station was Baker St in London. However Liverpool has a partially underground metro, which has the oldest part used dating to 1836 and an 1836 tunnel which urban trains run through. As London underground was a merging of a collection of separate railways, as was Liverpool's Merseyrail, that makes Liverpool Merseyrail the oldest urban railway in the world. The 1830 Wapping Tunnel is proposed to be reused on Merseyrail, which would make it the oldest underground section of any urban railway in the world. If you are into early railways Liverpool is fascinating. cheers. 188.222.101.236 (talk) 15:39, 10 March 2013 (UTC)
thread_title:  Claim of priority 

message: http://www.chicagotribune.com/topic/ny-history-hs515d,0,7913634.story  —Preceding unsigned comment added by 208.120.47.96 (talk) 03:10, 24 April 2009 (UTC)
thread_title:  More links 

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