page_title: Armstrong Tunnel
hierarchical_section_title: Armstrong Tunnel
caption_attribution_description: The Armstrong Tunnel, Pittsburgh
context_page_description: The Armstrong Tunnel in Pittsburgh, Pennsylvania, connects Second Avenue at the South Tenth Street Bridge, under the Bluff where Duquesne University is located, to Forbes Avenue between Boyd Street and Chatham Square.
context_section_description: The Armstrong Tunnel in Pittsburgh, Pennsylvania, connects Second Avenue at the South Tenth Street Bridge, under the Bluff where Duquesne University is located, to Forbes Avenue between Boyd Street and Chatham Square.
caption: The Armstrong Tunnel at Forbes Avenue. Duquesne University's Gumberg Library is visible in the background
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