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Marine Construction 


Coastal Engineering’s ADCI-certified commercial divers performed above and underwater repairs at the Knight Dam gatehouse in Montgomery County, Pennsylvania. Our dive team first performed an underwater inspection of all areas of the gatehouse to verify dimensions for the order and design of replacement materials. Our Professional Engineering staff handled fabrication and design.


We then performed above and underwater repairs:

-Removal of sluice gate stems, stem wall brackets, stem guides, thrust nuts

-Replacement of sluice gate stems, wall brackets, stem guides, thrust nuts


All work was performed in accordance with PennDOT Standards for Roadway Construction and Specifications Pub.408.

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