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Demolition, Blasting

Project Overview

The DiSalle Memorial bridge is a steel deck girder bridge that spans over the Maumee river on Interstate 75. Built in 1963, the bridge is 3,401.1 feet long, with a deck width of 97.4 feet. The length of the largest span is 166 feet. The replacement of the I-75 DiSalle Memorial bridge is part of the I-75 widening and reconstruction project in Lucas and Wood counties.

This project entailed the blasting of 8’ steel I beam girders in phase 1. These beam girders were approximately 920’ in length on the North and Southbound lanes of I-75 spanning half of the Maumee river. Phase II was completed in August 2022 with the blasting of an additional 800′ of steel I beam girders.

Due to the traffic constraints on I-75, the blasting took place at night. The joint effort, between the contractor and the blasting crew, resulted in a flawless blast of the girder spans occurring without incident.

municipal & public
ODOT & Kokosing Construction
Type of Project
Project Scope
September 2021

Challenges We Solved

Close Proximity to Extremely Heavy Traffic on I75
We manufactured boxes to cover the charges and utilized contractor personnel as well as highway patrol to facilitate a brief road closure during the initiation of the explosive charges.
Due to the high traffic volumes on I75 through Toledo, it was mandated by the State that the blast must occur during the lightest traffic hours, which happened to be 2:30 am Sunday morning. By utilizing the infrared technology on our drone, we were able to be certain that the blast area was secure & clear of any pedestrians.