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Empowering a smooth urban transition

Highway 91 is one of the enormous freeways running through Southern California. When widening the Route 91 corridor in the city of Corona, a key part of the project was to demolish a sizable highway overpass. The challenge was to do it without ever completely shutting down the highway, meaning there was no room for unplanned downtime.

Environmental Remediation Services Inc. (ERSI) selected hydraulic hammer Rammer™ 4099 for the project. The power-to-weight ratio and reputable performance in combination with the operator-friendly environment were important parameters in the selection.

“We were working Rammer 4099 in high-elevation scenarios for a solid 22 hours,” says on-site ERSI Superintendent Glenn Beam. “It performed extremely well.”

ERSI worked in phases and managed to simultaneously build back the structure and open new lanes during the demolition process. Thanks to the performance of the Rammer 4099 hammer, the project beat the anticipated completion date and could open up the freeway eleven hours ahead of schedule.