Sanitary Sewer Manhole Cover - Infrastructure & Utility Design #3544331 (License: Personal Use)

This circular cast-iron (or bronze-finished) manhole cover is marked “SANITARY SEWER” in raised capital letters at the top and bottom, indicating its use for wastewater systems. The surface features a dense grid of alternating horizontal and vertical bars, providing structural strength and slip resistance, while two side holes allow for lifting with specialized tools. Subtle patina and reflective highlights suggest outdoor exposure and long-term utility service.

Used on municipal infrastructure webpages, civil engineering portfolios, public works documentation, or educational materials about urban utilities; targets professionals, students, or city planners seeking visual references for sanitary sewer systems.