The 96” pipe ram crossing of Highway 61 along Jarvis River near Neebing, Ontario was complicated when LTL Directional Drilling (contractor) encountered a full face of concrete at the head of the 96” steal casing pipe. Unbeknown to the Ontario Ministry of Transportation (owner), designer, and contractor of the Jarvis River Crossing project, the original Highway 61 bridge abutment had been left in place when a new culvert and bridge were constructed. This paper will discuss the teamwork between the contractor, owner and Coogar Sales and Services (blasting coordinator) to advance through the 14 feet of concrete bridge abutment and successfully complete the project. Utilizing a Nxburst Safety Cartridges (rock-breaking cartridge), the contractor was able to get permission from the Owner to blast directly under Highway 61 and do so without a burdensome impact to the traveling public above. It is noted that this stretch of highway is considered a vital link for several communities, while feeding imports crossing from the US/Canadian border (Pigeon River Border Crossing). This paper/presentation further discusses the use of rock-breaking safety cartridges in trenchless applications when the use of high explosives is not permitted, and the protection of the public and surrounding structures is of the utmost of importance.
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