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can be reasonably obtained on any other line. The northern end of the Thirty-third Street bridge and the west end of Ligonier Streets should be raised to meet the new grade of Liberty Avenue; the bridge will then be about level, and Ligonier Street will slope between 6 and 7 per cent down to Thirty-fourth Street.

4. Sassafras Street Outlet. -- Raising the grade on Liberty Avenue will seriously interfere with the western outlet of Sassafras Street. But if this street becomes of sufficient importance -- and its location in the valley close to the railroads suggests a considerable development of its frontage for freight houses, warehouses or manufacturing -- it will be simple and satisfactory to bring the western outlet to the junction of Penn Avenue and Butler Street by means of a short tunnel under Thirty-fourth Street from the south side of Liberty Avenue to the northwest side of Ligonier Street.

5. Penn-Liberty Connection at Howley Street. -- A connection of Liberty Avenue and Main Street to Penn Avenue will be needed. (Diagram No. 3). This can be secured by widening and extending Howley Street. Thereby traffic bound for the Garfield District and east thereof can climb the Lawrenceville hill by the comparatively easy gradient (4 per cent) on Liberty Avenue, avoiding the steeper hill (about 5 per cent) on Penn avenue. This will also connect with the proposed Bloomfield bridge to Grant Boulevard.

Diagram No. 3. Penn-Liberty connection at Howley Street

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Last modified on 22-Dec 1999
Design format: copyright 1997-1999 Bruce S. Cridlebaugh
Original document: Frederick Law Olmsted, 1910