Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/732903
October 2016 | EquipmentWorld.com 70 so each side had a through lane and a turn lane," he explains. "To get this new bridge built, we had to shove all the traffic over to two lanes. So then, two lanes were carrying four lanes of traffic. Four lanes couldn't even handle the flow before. It was wild how well the temporary DDI performed. There were a lot of skeptics about it, including myself, on how well it would work, but it improved traffic flow." One of the reasons the tempo- rary DDI worked so well was due to assistance from engineering firm Olsson Associates of Kansas City, Missouri. MoDOT originally contracted the group for work on the design, and then Hartman hired them to help with the tem- porary configuration. "We really were kind of work- ing on both sides, which is pretty atypical," says Reid Catt, Olsson senior engineer. He says a lot of the work for Hartman was the traffic control component – making adjustments to the phasing plan, and then the traffic control plan accordingly, and submitting these to MoDOT. "It was interesting to say the least, because we were contracted with both the agency and the con- tractor," Catt says. "Typically that doesn't work out, but it did in this case with the experimental tempo- rary DDI traffic control phase." In addition to keeping the traffic flowing, Catt says his firm was, in a way, also looking to cre- ate an innovative solution. "We knew we needed to maintain full access throughout construction, with exceptions for closures that had to happen, and meet the expectations of stakeholders near there," he explains. "Somewhat superficially, we tried to think of something we could propose that would be different and set us apart. It snowballed from there in a brainstorming session. It looked like it would work and provide a benefit." highway contractor | continued LaPlant-Choate: No Job Too Tough! AEM Inducts 2014 Class into Hall of Fame Insley Manufacturing Corporation An Unsung Hero: The Dry Batch Paver Double Dude…Out Front Again! SPrINg 2015 • ISSUE #116 READ ALL ABOUT IT! It's only $35 US in the USA and Canada, $45 US all others. To join, call us at 419-352-5616, or mail a check or money order to HCEA, 16623 Liberty Hi Road, Bowling Green, Ohio 43402. Join online and learn more about us at www.hcea.net. Thank you for your interest and support! That's not all we do! We also feature: International Convention & Old Equipment Exposition Held annually and featuring working demonstrations and static displays. National Construction Equipment Museum and Archives A world-renowned collection, open to the public, of everything from fully restored antique machinery to 1800s literature and photographs. Join the Historical Construction Equipment Association (a non-profit organization) and receive its quarterly magazine, Equipment Echoes. Read fascinating articles about all types of old construction equipment, illustrated by beautiful historic photos. ABOUT IT! That's not all we do! We also feature: International Convention & Old Equipment Exposition Held annually and featuring working demonstrations and static displays. National Construction Equipment Museum and Archives A world-renowned collection, open to the public, of everything from fully restored antique machinery to 1800s literature and photographs. Join the Historical Construction Equipment Association (a non-profit organization) and receive its quarterly magazine, Read fascinating articles about all types of old construction equipment, illustrated by beautiful historic photos. JOIN HCEA TODAY! READ ALL ABOUT IT! Untitled-1 1 8/17/15 9:42 AM The big driver of doing these things is not to be different; it's really just an economical way to handle traffic volumes. " "