Project Overview
The Egnatia Motorway Kavala section represents a major infrastructure achievement, traversing challenging mountain terrain to complete a vital east-west corridor across Northern Greece. Our team delivered comprehensive electrical and mechanical engineering services for this complex transportation project.
Tunnel Engineering
Main Tunnel Complex
The twin-bore 4.2 km tunnel features:
- Longitudinal ventilation with 52 jet fans per tube
- Emergency ventilation capable of 120 m³/s extraction
- Fire detection through linear heat sensing cable
- CCTV coverage with automatic incident detection
- Variable message signs for traffic management
- Emergency refuge areas every 500 meters
Secondary Tunnels
Three additional tunnels totaling 4.3 km incorporate:
- Portal buildings with ventilation equipment
- Drainage pump stations with backup power
- Traffic control systems with lane signals
- Emergency communication systems
Electrical Infrastructure
Power Distribution
- Dual 20 kV utility feeds for redundancy
- Distributed generator backup at tunnel portals
- UPS systems for critical safety equipment
- Comprehensive lightning protection
Lighting Systems
- LED tunnel lighting with dimming control
- Threshold and transition zone enhancement
- Emergency escape route illumination
- Solar-powered rest area lighting
Intelligent Transport Systems
Traffic Management
- Automatic traffic counters and classifiers
- Weather stations with road surface sensors
- Variable speed limit signs responding to conditions
- Queue detection and warning systems
Toll Collection
- Multi-lane free-flow electronic tolling
- Video-based license plate recognition
- Manual toll lanes with barrier control
- Central toll management system
Safety Systems
The section incorporates comprehensive safety features:
- Emergency phones every 150 meters
- Fire extinguisher cabinets throughout tunnels
- Water supply for firefighting with ring main
- Helicopter landing pads at strategic locations
- Incident management center with full SCADA integration