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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


At Coastal, all diving operations conform to OSHA CFR 1910 subpart T regulations, and our staff hold the required certifications to perform work thoroughly and efficiently. Our PE Dive Supervisors hold ASDSO Inspection & Assessment of Dams certifications along with OSHA 30/40, ADCI Dive Supervisor credentials and lifesaving certifications. All work was performed in accordance with PennDOT Standards for Roadway Construction and Specifications Pub.408.

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