Mitigation Strategies & Multi-Media Productions

Increasingly, these services go hand-in-hand as Adverse Effect Mitigation requirements evolve into creative Preservation Education outreach tools. Digital photography and video provides affordable opportunities to deliver captivating presentations of historical information as a means of compensating the loss of a historic building or structure.

  • Web page creation

  • Interpretive Signs & Displays

  • Informative Histories in brochure or booklet form

  • Digital photographic slideshows, PowerPoint presentations and video productions for stand-alone use or website mounting

  • Salvage of architectural elements for donation or display

Featured Projects
Media & Mitigation


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Work in Progress
New Hampshire Historic Bridge Signage.
Curently, HDC is developing historical signage for National Register eligible bridges that have been replaced. The signs will use text, photos and graphics to explain the historical and engineering significance of the bridge. A prototype sign is being installed at the site of the Central Street Bridge over the Pemigawasset River between Bristol and New Hampton. This work is in conjunction with SEA Consultants, Inc. for the New Hampshire Department of Transportation.



Edison/Driscoll Bridge Public Information Booklet
The Thomas A. Edison Bridge was the largest, highest, and longest-span continuous deck plate girder highway bridge in the US when completed in 1940. Its construction involved the lifting of the world longest (260') and heaviest (198 tons) girder to a height of 135' above the Raritan River at Perth Amboy. The Driscoll Bridge is a copy of the Edison built alongside it in 1954 to carry the Garden State Parkway. The booklet, produced by NJDOT to mitigate the rehabilitation of the historic bridges, was written by Richard Casella and Julius Haas of the Louis Berger Group. It won the best State Document of the Year award for 2004 from the Document Association of New Jersey. Read the booklet online: History & Technology of the Edison and Driscoll Bridges.



Pennsylvania Railroad Car Float Transfer Bridges, Greenville Yard, Jersey City, NJ
Built in 1905, with later modifications, the Greenville Yard Car Float Transfer Bridges are the last surviving example in New York Harbor of a suspended-type car-float transfer bridge. The innovative design, introduced by the PRR in 1888, proved superior in ease and speed of operation. Perfected and electrified for the Greenville facility, the design became the standard for many railroads. In addition to HAER documentation, the operation of the facility was filmed in 16mm B&W.


NAWCAD Trenton Interpretive Display Historic Signage, Ewing, New Jersey
The core of the Naval Air Weapons Center Aircraft Division Trenton complex was the Aeronautical Turbine Laboratory (ATL), the most powerful and technically advanced aircraft gas-turbine engine test facility in the world when completed in 1955. It was a major Cold War military research facility central to the development of long-range, low-temperature, high-altitude jet engines. Its building required the latest advances in mechanical, electrical, and structural engineering. Closed by the 1993 BRAC Act, the Navy established a commemorative display using an A-4 Jet at Ewing Town Park. A custom designed stainless steel sign was designed and installed as part of the mitigation package.