Overview of Bridge Demolition Engineering & Methodologies

A walk through the key engineering considerations for bridge demolition projects, from understanding structural constraints to selecting the right demolition method. Topics covered include: How bridge type, material and condition shape the demolition approach Key constraints: railway and highways interfaces, height, ground conditions, tidal access, services and time pressures Main demolition methods: mechanical, cut and lift, explosive and SPMT Cutting techniques: wire saw, floor saw, track saw, burning, cold cutting and hydro demolition Lifting methods: cranes, barges, SPMTs and jacking systems Protecting adjacent structures and infrastructure during demolition Waste removal and transport considerations The session includes two project case studies: the HS2 Heartlands Bridge demolition near Birmingham, and the Agar Grove Bridge demolition completed in December 2024 during an eight-day rail possession.