Second Shore

Roadway immersion

Project Purpose

The purpose of the project is to improve the NLSD multi-modal transportation facility. The specific needs to be addressed throughout the study include: improve safety, improve mobility for non-motorized modes of travel, buses and automobiles, improve facility deficiencies, improve modal connections and opportunities, and improve accessibility to and from Lincoln Park, the Lakefront Trail and the adjacent communities.

Read more: Project Purpose

Opportunity to Elevate Chicago

  • Immerse Outer Drive in offshore two-level tunnel in shallow trench; eliminate weather impact from road conditions
  • Expand Outer Drive to 6-lanes each direction; upgrade access points to alieviate congestion and stoppage risks...

Read more: Revolutionize the Drive


  • An immersed tunnel is an underwater tunnel composed of segments made of steel or cast iron tubes lined with concrete using conventional shipbuilding techniques.
  • Immersed tunnels are used in conjunction with other forms of tunnel at their ends to continue the tunnel from near the water's edge to the at-grade on-land surface.

Read more: Overview