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Canal Road Bridge

Six Mile Creek Aqueduct

Canal Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: November 8, 2015

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Key Facts

Facility Carried / Feature Intersected
Canal Road and Delaware and Raritan Canal Over Six Mile Run
Rural: Hunterdon County, New Jersey: United States
Structure Type
Stone Elliptical Deck Arch, Fixed
Construction Date and Builder / Engineer
1834 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
12 Feet (3.7 Meters)
Structure Length
42 Feet (12.8 Meters)
Roadway Width
Not Available
3 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This is a very old stone structure. It was built in 1834 as an aqueduct that carries Six Mile Run under the Delaware and Raritan Canal. At some point the structure was widened by adding a stone arch structure to the east side. The road that parallels the canal passes over this segment. The added stone structure is quite a bit higher in elevation than the original arch. Looking at the barrel of the structure, it is visible further below.

The dimensions given above are what are listed in the National Bridge Inventory. The length of the aqueduct (ie the width of the bridge) is obviously much greater than the roadway width. The roadway width was not listed in the National Bridge Inventory. HistoricBridges.org estimates the overall length of the aqueduct at 135 feet.

Information and Findings From New Jersey's Historic Bridge Inventory

Discussion of Bridge

The three-span stone arch was constructed as part of the Delaware and Raritan Canal in 1834. The canal operated until about 1940 and primarily carried Pennsylvania coal to New York. After its closing, the state acquired the canal for a park. In 1984 the aqueduct, which carries the road and the canal/towpath at different levels, was restored. It is one of the largest of at least 16 stone arch structures along the canal. It is listed on the National Register because it carries the canal r-o-w.

Discussion of Surrounding Area

The bridge is an aqueduct serving to carry both River Road and the neighboring Delaware and Raritan Canal over Six Mile Run. The area is rural with fields and woods. To the north is the 19th-century crossroads village of Blackwells Mills with a restored canal lock tenders house maintained by the Delaware and Raritan Canal State Park. The canal right-of-way is listed in the National Register. Since the structure carries the listed resource, it is interpreted as also being eligible.

Bridge Considered Historic By Survey: Yes


Photo Galleries and Videos: Canal Road Bridge

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