April 13, 1934. P.W.A. Sewer Project Docket No. 2353. South Park This view shows a section of Hayward Street Sewer looking north. Note unusual height of manhole construction occasioned by ravine intersecting sewer main at this point. This manhole was reinforced and protected on both sides by cribbing made of old railroad ties and anchored with rubble and extra fill from sewer trench.