What is bridge tie?

A bridge tie is a type of timber or steel support used in bridge construction to connect the superstructure (deck) to the substructure (piers or abutments). The bridge tie transfers the weight of the traffic load from the deck to the substructure, providing stability and ensuring the bridge's durability.

Bridge ties can be made from a variety of materials, including hardwoods like oak and fir, or steel and reinforced concrete. The type of bridge tie used in a particular project depends on the design and the site's conditions, such as the weight and frequency of the traffic, the climate, and the terrain.

Maintaining the integrity of bridge ties is crucial to ensuring the safety and longevity of a bridge. Regular inspections and maintenance activities such as deck washing, invasive species control, and bridge washing are necessary on wooden and/or steel bridge ties. Over time, environmental factors such as temperature, moisture, and weather conditions can cause bridge ties to degrade and weaken, making it crucial to repair or replace them as necessary.