Bridge Demolition Case Study: Shin-Kawajiri Bridge (Old Bridge) Superstructure

Bridge demolition using blasting. It significantly reduces hazardous tasks such as high-altitude work and lifting heavy objects.

A bridge spanning National Route 417 in Ibi River Town, Ibi District, Gifu Prefecture. With the opening of a bypass due to the construction of new tunnels and bridges, the Shinkawajiri Bridge (the old bridge), built in 1961, has completed its 60-year service and was dismantled using blasting techniques. - Structure: Steel Langer Bridge - Bridge Length: 136.7 m - Width: 5.5 m - Weight: 223 tons On both sides of the bridge, steel components were cut using a V-shaped blasting line and dropped directly onto a work platform created on the riverbed of the Ibi River, facilitating a safe mechanical dismantling process on the ground. [Features] - Elimination of the need for large scaffolding, leading to reduced construction time and cost savings - Significant reduction in the risks associated with high-altitude work, including falls - Major reduction in the hazardous task of rigging heavy objects - No special equipment required due to the drop from its own weight - The form after the drop is relatively stable, allowing for smooth subsequent mechanical dismantling *For more details, please refer to the PDF document or feel free to contact us.*

Machinery and equipment installation/dismantling/relocationothers