Piyo: We're a highway authority responsible for bridge maintenance. Drones could replace expensive rope access teams. But bridges cross rivers, highways, sometimes controlled airspace. What are the regulations? Can we do it?
Poppo: Bridge inspection is one of the highest-value drone applications in Canada—savings are substantial compared to rope teams or aerial lifts. But it's also one of the most complex from a regulatory standpoint. You're balancing airspace control, ground safety, critical infrastructure, and payload/sensor complexity. Let me walk you through it.
Why Bridge Inspection Is a Top Drone Application
FAQ
Q: Do we need RPOC for bridge inspection, or can we hire a contractor?A: Either. If you do it in-house, RPOC required. If you hire a contractor (drone company), they provide RPOC and you don't need it. Common: Bridge authorities contract with drone services.
Q: Can we fly drones under a bridge if traffic is still passing?A: Risky legally. Best practice: Close bridge or redirect traffic. If bridge must stay open, extra safety measures required (traffic control, spotters, communication systems). Very difficult airspace to work in.
Q: How accurate is drone inspection for critical structural decisions?A: High if done properly. Professional drone + thermal + LiDAR + analysis by engineer = reliable structural assessment. Often used by engineers to inform detailed inspection decisions. Drone data alone doesn't replace structural engineer judgment, but it's excellent supporting evidence.
Q: What data format do we need for the structural engineer?A: Confirm with engineer first. Typical: 4K imagery + thermal GeoTIFF + LAS point cloud (if LiDAR) + GPS coordinates. Many engineers use Pix4D or similar to generate structural models from drone data.
Q: Can drones inspect underwater bridge foundations?A: Not really. Drones don't work underwater (unless specialized ROV/AUV). Bridge underwater inspection still requires divers or ROVs. Drones good for above-water assessment only.
Q: How often should bridges be inspected by drone?A: Depends on condition and age. Typical: Annually for deteriorating bridges; every 2-3 years for stable structures. Thermal trending year-over-year shows progression.
Q: Is thermal imaging worth the cost for bridge inspection?How MmowW Supports Bridge Inspection Compliance
Bridge inspections involve complex coordination: airspace, ground safety, data quality, structural standards. MmowW provides:
- Bridge-specific SMS templates (procedures for different bridge types)
- Airspace coordination checklist (NOTAM, ATC, helicopter coordination)
- Ground safety procedures (traffic control, personnel briefing)
- Data collection documentation (resolution requirements, overlap standards)
- Thermal analysis support (data quality tracking, trending)
- Incident logging (safety concerns, weather aborts)