Several companies produce strengthened lower wishbones to prevent cracks from developing.

The fibers prevent minor cracks from enlarging, tying them together in an elastic matrix.

This prevents cracks and hinders the intrusion of salt water.

To prevent cracks, a reinforcing steel strip is added.

Five feet separates each contraction joint - 3/8-inch-deep spaces that prevent cracks in one square, or flag, from spreading to another.

Purfling helps prevent cracks at the edge from extending deeper into the wood.

And prevent major cracks down the road.

This prevents cracks in a way that purfling cannot.

This gives the girder more room to stretch after the bridge is constructed, preventing cracks in the concrete over time.

A waterproofing sealer should be applied before winter to prevent cracks.