Steel City Tunnel Partners

Construction Joint Venture

Appears in 1 story · Last updated Oct 25, 2026

Stories

ALCOSAN breaks ground on $1 billion Ohio River Tunnel

Built World

Contractor for the Ohio River Tunnel

For decades, heavy rain in Pittsburgh has pushed untreated sewage into the Ohio, Allegheny and Monongahela rivers. On Oct. 22, the Allegheny County Sanitary Authority broke ground on a $1 billion tunnel meant to change that.

Updated Oct 25