
    Pennsylvania Department of Transportation Appeal.
    Argued November 12, 1970.
    
      WilUam E. Bethards, Assistant Attorney General, with him Herbert G. Zahn, Assistant Attorney General, Robert W. Gunliffe, Deputy Attorney General, and Fred Speaker, Attorney General, for appellant;
    
      Alan R. Squires, with him Edward Munoe, for appellee;
    
      Sheldon L. Key ser, Assistant County Solicitor, with him Francis A. Barry, Deputy County Solicitor, and Maurice Louik, County Solicitor, for County of Allegheny, intervenor.
   Order affirmed.  