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Tunnels & Bridges
Tunnel & Bridge Maintenance Power Solution
For tunnel and bridge maintenance facing long cable runs, limited ventilation and tight repair windows, SOFIMO delivers low-noise, battery-powered solutions that reduce cabling, eliminate on-site fuel exhaust and speed up repairs.
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Application in Focus
Power for Tunnel & Bridge Maintenance
From structural repairs and trackside maintenance to drainage, ventilation and emergency response, tunnel and bridge projects involve diverse tasks across widely distributed work areas. SOFIMO industrial portable power stations deliver reliable power for welding, drilling, cutting, pumping and lighting—reducing reliance on long cable runs and enabling faster deployment where power is needed.
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  • Tunnel Structural Repair
    Drilling · Cutting · Grinding · Welding
  • Trackside Maintenance
    Drilling · Fastening · Cutting · Temporary Lighting
  • Bridge Steel Repair
    Welding · Cutting · Grinding · Drilling
  • Drainage Maintenance
    Pumps · Power Tools · Temporary Lighting
  • Ventilation & M&E Maintenance
    Fans · Power Tools · Maintenance Lighting
  • Emergency Repair
    Welding · Cutting · Lighting · Pumping
Jobsite Performance
Built for Tunnel & Bridge Maintenance
Reliable performance for equipment startup, challenging environments and demanding maintenance work.
Runtime & Charging Matched to the Job
Power demand varies across maintenance tasks. SOFIMO matches battery capacity and charging options to equipment loads, operating hours and maintenance schedules.
Flexible Battery Capacity

Sized for equipment loads and required operating time.

Multiple Charging Options

AC and generator charging options, depending on model configuration.

Built for Dust, Moisture & Temperature Changes
From damp and dusty tunnel interiors to exposed bridge maintenance sites, equipment needs to handle dust, splashing water and changing seasonal temperatures.
IP54 Protection

Protection against dust and splashing water

-20°C to 55°C*

For changing seasonal jobsite conditions

*Temperature range depends on the final specifications of the corresponding model.

Stable Power for Demanding Maintenance Work
For extended maintenance work and frequently cycled equipment, a stable battery system and intelligent management continuously monitor operating conditions for reliable field power.
EV-Grade A-Cell Batteries

Consistent cells for stable power output

Intelligent BMS Protection

Over-Current · Over-Temperature · Short-Circuit · Battery Monitoring

MORE ADVANTAGES
More Flexibility for Every Maintenance
Project
Related Caso
Nanjing Metro and tunnel construction power station on site
Metro & Tunnel Construction | Less Cabling, More Flexibility

LESS CABLING. MORE PROGRESS.

Underground construction comes with unique challenges. On Nanjing Metro Line 5 and the Yangtze River Crossing Tunnel, long construction routes, scattered work areas, and frequent relocations made temporary power distribution a time-consuming task. Conventional setups required extensive cabling, often followed by repeated adjustments as work progressed.

SOFIMO industrial portable power stations offered a more flexible approach. From rail installation and on-site welding to tunnel road repairs, crews could position power stations close to their work areas, reducing lengthy cable runs and simplifying relocation between tasks.

Less time setting up power. More time getting the job done.

Nanjing Metro & Tunnel Construction | China

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