Working for Smart Growth:
More Livable Places and Open Spaces


Assunpink Daylighting

Before emptying into the Delaware River, the Assunpink Creek has been re-engineered to flow underground through parts of downtown Trenton.  One of these underground segments, or culverts, exists between South Broad Street and South Warren Street.  The creek is visible throughout Mill Hill Park before passing under the South Broad Street Bridge and into the culvert until it returns to the surface after the South Warren Street Bridge.

Assunpink Creek before it was channelized and placed underground.

Assunpink Creek before it was channelized and placed underground.

Presently, the city of Trenton has been working with the United States Army Corps of Engineers to return this segment of the creek to the surface, a process known as “daylighting.”  While this project has been nearly a decade in the making, it is anticipated that construction may begin within the next year.


Project Updates:

A community meeting was held Monday, Sept. 15 at Prudence Hall, Thomas Edison State College, to discuss the upcoming daylighting project and related initiatives.  View the presentation slides here.

Helpful Resources:

The Times of Trenton coverage of the Sept. 15 community meeting

Section 106 Sample Letter and Recipient List

US Army Corps of Engineers Assunpink restoration project page

US Army Corps of Engineers engineering specifications of the stream daylighting and ecosystem restoration (90% Phase) 

Birdsall Engineering Report (September 5, 2006)

Assunpink Restoration Feasibility Report (November 2007)

Archaeological Survey (January 2012)

Environmental Investigation Report (January 2011)

Geotechnical Investigation Report (January 2011)



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