19 1/2-mi route is limited-access highway in rugged topography; project involves 10 major and five minor interchanges, two tunnels, and double deck bridge; standards provide for max grades of 5%, horizontal curvature of 4° and design speed of 60 mph; Squirrel Hill Tunnel carries two parallel tubes, each tube having two 12-ft one-directional traffic lanes and sidewalk.


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    Titel :

    Design is complicated on Penn-Lincoln Parkway


    Weitere Titelangaben:

    Better Roads


    Erschienen in:

    Better Roads ; 24 , n 1


    Erscheinungsdatum :

    1954


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Pittsburgh's Penn-Lincoln Parkway

    Van Riper, H.K. | Engineering Index Backfile | 1955


    Pittsburgh's Penn-Lincoln parkway

    Engineering Index Backfile | 1944


    Work speeded on Penn-Lincoln parkway

    Schmidt, E.L. | Engineering Index Backfile | 1947


    Evaluating a Roadside Assistance Program: Penn-Lincoln Parkway Service Patrol

    Donnell, Eric T. / Patten, Michael L. / Mason, John M. | Transportation Research Record | 1999