The Cape Hatteras Lighthouse was built in 1870 on a floating foundation — timber laid on compacted sand, never intended to be disturbed once construction was complete. By the late twentieth century, coastal erosion had brought the Atlantic to within 120 feet of a tower originally sited 1,500 feet from shore.

In 1999, the National Park Service moved the 4,800-ton masonry structure 2,900 feet inland — without cracking a building whose entire foundation logic assumed it would never move again.

4,800+ t
Total structure weight
2,900 ft
Distance relocated
23 days
17 Jun–9 Jul 1999
210 ft
Tower height
Stage 1
Separation from the original foundation
Contractor International Chimney Corp. lifted the lighthouse off its 1870 floating foundation onto a temporary support system of steel beams and hydraulic jacks — the first time the structure had been disturbed from its original footing in 129 years.
Stage 2
Jacking and track relocation
The structure was advanced along a steel roller track using push-jacks, moving roughly five feet at a time. Sixty sensors monitored tilt and vibration continuously throughout the 23-day operation.
Stage 3
Re-siting the light station
The keepers' quarters and several other historic structures at the light station were relocated separately, preserving their original spatial relationship to the lighthouse once all structures reached the new site.
Foundation note

Most heavy structural relocations move buildings on conventional foundations with some allowance for load redistribution. Cape Hatteras Lighthouse's floating foundation — timber on sand, topped with brick and granite — was built that way because bedrock was unreachable at the site, not for portability, making the separation stage the central engineering risk of the entire project.

A 129-year-old masonry tower, built on a foundation never meant to move again, relocated five feet at a time under continuous monitoring — without a single structural crack.

The relocation was completed on 9 July 1999 and received the American Society of Civil Engineers' Outstanding Civil Engineering Achievement (OPAL) award the following year. It stands as a reference case for relocating historic masonry structures intact, using controlled jacking, continuous monitoring, and a track system engineered for the specific load.

For further reading, see Heavy Transport Engineering, which places structural jacking and relocation methods in a wider sector context.

Related case studies: Refinery Combination Tower · Abu Simbel · Ramses II Relocation

Sources: U.S. National Park Service — owner's account of the 2,900 ft relocation, contractors (International Chimney Corp. with Expert House Movers), and the load-transfer concept; NPS — Changing Landscape — the 400 tons of transport steel, five-foot push-jack increments, 60 stability sensors and the 23-day move (17 June – 9 July 1999); National Parks Conservation Association — the ASCE Outstanding Civil Engineering Achievement award. Published structure weights vary between roughly 4,400 and 5,000 tons; NPS gives 4,830 tons.