Rebuilding of three bridges over Highway 73 - Rebuilding of Pierre-Laporte Bridge pillars (Quebec City, Quebec)

Work to be performed:

• Concrete stripping
• Drilling for dowels
• Guardrail demolition

Period: May to November 2002

Challenges and special requirements:

• Traffic must not be impeded by the transportation and operation of equipment or the littering of lanes with concrete or reinforcing steel chips and splinters
  
  
• Vibration standards must be respected, and vibrations transmitted to the existing structure must be kept to a minimum
  
  
• Stripping and drilling work must be precise and completed quickly
  
  
• Demolition of the bridge span with the hydraulic shears must not damage the existing concrete pillars
  
  
• Deadlines must be strictly adhered to.

Equipment used:

• Guiding frame with concrete machining tool
• Hydraulic excavator with hydraulic demolition grip
• KX-41 excavator with hydraulic drill