Underwater Bridge Inspection

Collins uses qualified inspectors led by a professional engineer-diver experienced in underwater inspections as well as the design of bridges. We not only have the required staff in-house, we possess the necessary equipment to perform inspections in poor visibility, high currents and significant water depths. Collins’ engineer-divers are accustomed to completing all types of underwater inspections, ensuring that accurate and efficient inspections are always performed. Our engineer-divers are certified commercial divers and hold various inspection and testing certifications. They possess the specialised ability to properly identify items of importance in an underwater inspection, and make recommendations and provide design services for repairs and maintenance. We are highly responsive in cases of emergency. Collins, on behalf of the National Roads Authority, Irish Rail, DRD Roads Service NI and Translink has carried out 200 underwater bridge inspections and continues to monitor the hydraulic effects of floods and scour.

Inspection/Testing/Evaluation
Computer Database Development for Inventory and Maintenance Scheduling	Stream Soundings/Profiling
High Resolution Scanning Sonar	Repair and Rehabilitation Design
Cost Estimates for Repair	Failure Investigation
Fracture Critical and Nondestructive Testing	Difficult Access and Swift Current Operations
Forensic Investigation	Underwater Inspection to 50 m by In-House Professional Engineer-Divers
Comprehensive Engineering Reports	Underwater Documentation including Photography, Video with Narrative Audio, and Clearwater Photography for Limited Visibility Conditions