High Density

Counterweights

Perma Ballast® Counterweights

BTI: Experienced, Versatile, Efficient

Charles River Bridge Extension

  • Counterweight ballast is an equivalent weight that balances a load.

  • Typical uses include elevator counterweight, crane counterweight, bridge counterweight and funfair ride counterweight.

  • A well-known example of a bridge counterweighted with Perma Ballast® is the Charles River Bridge Extension - part of Boston's Big Dig project. 

Charles River Bridge Extension