We are certified contractors using the latest under bridge rigging and traffic control technologies in over 30 states.

HP 35 Hydra Platforms

At All Access Rigging Co., we are proud to utilize some of the most cutting-edge technology in our line of work.

The Hydra Platform trailer-mounted model HP35 is a comprehensively equipped under-bridge access and work platform. The HP35 model features 180 degree platform rotation covering more than 1000 square feet of under-bridge area from a fixed point on the bridge deck. Versatility is increased by the hydrostatic drive, which allows bridge deck propulsion during platform use. Reversible deployment is a standard capability of the Hydra Platforms trailer-mounted model HP35. The Tower Separation System, comprised of hydraulically adjustable cross-linking arms between vertical tower and the turntable sub-frame enables operators to erect and extend the tower and platform over sidewalks and other barriers without restricting the under-bridge operations.


  • Main hydraulic system: 18 HP V-twin gas engine with auto idle
  • Auxiliary hydraulic backup system: motor and hydraulic pump
  • Hydraulic control panels: deck, platform and handheld
  • 180° platform rotation
  • ±5° Tower adjustment for super elevation
  • Voice activated communication system, platform to bridge deck
  • Single lane 5 minute deployment
  • Self-propelled by hydrostatic drive
  • Patented Tower Separation System
  • 1,000 lbs (455kg) platform capacity
  • Electric brakes standard
  • 32ft (9.75m) or 35ft (10.67m) platform lengths
  • Access crossover to tower remains horizontal at all times for personnel safety

Download the HP 35 Hydra Platforms Specification Sheet