Just east of downtown Kansas City, Missouri, the interchange reconfiguration of I-435 and I-70 is nearing completion. Comprised of 11 new bridges, pavement widening, and more, it is a massive undertaking that the city and state wanted to complete with as little disruption to traffic as possible.
That is why the team at Greg Bair Track Hoe Services Inc. put extra effort into demolishing two bridges—about 450 ft long and 50 ft high—in about two and a half days.
Because of the time crunch, the crew put together an equipment fleet that included two high-reach demolition excavators: a Volvo EC750E HR and EC480D HR.
“These bridges were very tall, so a normal excavator couldn’t reach them,” said Greg Bair, president. “And because of the short time frame, we decided to use two.”
Greg Bair Track Hoe Services was a smart pick for this challenging, time-sensitive job. The company, based in the Kansas City area, has been in the demolition business for three decades.
For the February 2020 interstate project, four weeks of prep work were essential to meeting the deadline, said Bair’s estimator and project manager, Andy Shorten.
“We were mobilizing equipment, assembling things, staging materials and trailers, coordinating traffic control and security, and laying out plans,” Shorten said.
Some machines would be able to work on the bridge decks, but most of the demolition happened from the ground.That is what made the high-reach excavators so essential. They ran the standard booms with extensions on each machine, bringing the reach of the EC480D to 51 ft 9 in. and the EC750E to 59 ft.