99th Street station (IRT Third Avenue Line)
New York City Subway station in Manhattan (closed 1955)

The 99th Street station was a local station on the demolished IRT Third Avenue Line in Manhattan, New York City. The station was originally built by the Manhattan Railway Company on December 30, 1878, and later had two levels. The lower level serving local trains was built first, and had two tracks and two side platforms. The upper level, built as part of the Dual Contracts had one track that bypassed the station and served express trains. This station closed on May 12, 1955, with the ending of all service on the Third Avenue El south of 149th Street. South of the station were connecting tracks to the 98th Street Yard. The station was also located next to Substation 7 an old IRT substation designed not only in order to electrify the Third Avenue Line, but the Second and Ninth Avenue elevated lines as well. Later it even served as a power source for the IRT Lexington Avenue Line from 1918 until the 1970s. The substation is still owned by the MTA and has been listed on the National Register of Historic Places since February 9, 2006.
References
External links
"99th Street (3rd Avenue El)".
This brief starts where responsible research should: with the source description of “99th Street station (IRT Third Avenue Line)” as new York City Subway station in Manhattan (closed 1955). Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as new York City Subway station in Manhattan (closed 1955). Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 22, 2026. The linked authority identifier is Q4646347. The first chronological checks are 1878, 1955, 1918 and 2006.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
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Questions for further research
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This entry incorporates text from “99th Street station (IRT Third Avenue Line)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.