The Armstrong Tunnel in

Pittsburgh, Pennsylvania Pittsburgh ( ) is a city in Allegheny County, Pennsylvania, United States, and its county seat. It is the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania (after Philadelphia) and the List of Un ...

, 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.

Construction

The tunnel was constructed between 1926 and 1927. The chief engineer was Vernon R. Covell of the Allegheny County Public Works Department. The tunnel portals were designed by a city architect, Stanley L. Roush, who is also noted for the Smithfield Street Bridge portals, the Pittsburgh City-County Building, the Corliss Tunnel, and many other municipal projects.

Characteristics

The tunnel itself is characterized by twin bores of horseshoe cross-section, and bends halfway through. It also has a pedestrian walkway on the western side. A legend mentioned by the site involves a notion that the bend in the tunnel was a mistake, and whoever was responsible committed

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in shame. Chief engineer Covell did not kill himself, invalidating this legend. Author Bruce S. Cridlebaugh suspects the bend was related to mines or other geological factors, property rights (including Duquesne University), or alignments with existing or proposed roads. Since August 1987 the tunnels have provided cellular phone reception.

Name

The tunnels were named in honor of Joseph G. Armstrong, County Director of Public Works. Most of the bridges over the Pittsburgh's three rivers were replaced between 1910 and 1940, years which included Mr. Armstrong's terms as Mayor of Pittsburgh and Allegheny County Commissioner.

References

External links

{{NRHP bridges Tunnels in Pittsburgh Duquesne University Road tunnels on the National Register of Historic Places Transportation buildings and structures on the National Register of Historic Places in Pennsylvania Tunnels completed in 1926 Pittsburgh History & Landmarks Foundation Historic Landmarks 1926 establishments in Pennsylvania Road tunnels in Pennsylvania National Register of Historic Places in Pittsburgh