Photos

Check out our collection of photos capturing the construction of the Blackwater CSO Tunnel:

MOBILIZATION & GROUNDBREAKING CEREMONY

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Blackwater CSO Tunnel 2.jpg
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EXCAVATION OF 7TH STREET SHAFT

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EXCAVATION OF TUNNEL

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TUNNEL TOURS | MAY 29, 2026

Guests of the Tunnel Tours walk past equipment in the excavated tunnel path.
Inside the Blackwater CSO Tunnel looking toward the beginning of the excavated path.

Visit our LYHBeyond homepage to learn more about this project!

CONCRETE LINING OF TUNNEL’S INTERIOR

Steel forms are in place for the concrete lining of tunnel
Rebar outlines the eventual concrete lining of the tunnel.