b'//PROJECT PROFILES Ulteig received a 2019 ACPA Award ofUlteig received a 2019 EngineeringExcellence from the Colorado/WyomingExcellence Honor Award for this project Chapter for this project; a 2019 ProjectSaving Money Management Award from Colorado Replacingfrom ACEC (American Council ofEngineering Companies) Minnesota. and Lives Department of Transportation (CDOT)Foundationsand the Colorado Contractors Associa-tion; and a 2018 Engineering Excellence with Better Design Honor Award from ACEC Colorado. While EnergizedRedlands Parkway Roundabout Substation Repair with Helical PilesTHE PROJECT THE PROJECT RESULTS This $5 million project for CDOT converted the existing signalized intersection at SH 340 (Broadway)An existing transformer at the Waterville, MN, substation wasUlteigs creative thinking and use of helical piles were critical and Redlands Parkway in Colorado to a roundabout. Ulteig provided construction management,experiencing overloaded conditions, aging, and deteriorationfactors in the successful delivery of a finished project that inspection and public information services. The projects top goal was to decrease accidents aton its 4 kV equipment. Xcel Energy requested an electricalwill provide safe and reliable energy for Xcel Energy, the the intersection, the vast majority of which were rear-end and left-turning accidents. upgrade to replace the existing 69 kV/4.16 kV transformerWaterville substation, and the communities they serve for LISTENING TO OUR CLIENT with a new 69 kV/23.9 kV transformer. However, thedecades to come.CDOT asked to keep the intersection open throughout project. The Ulteig team designedfoundations for a substation box structure needed repair, a temporary roundabout, which allowed traffic to continuously flow without stoppingreinforcement or replacement due to concrete deterioration construction. The temporary roundabout also helped expedite the project timeline. and poor soil conditions. Plusthe entire project needed tobe completed while the structure was energized. RESULTS By eliminating the need for short-term traffic light signals and a reductionLISTENING TO OUR CLIENTin other traffic control devices, the temporary roundabout design savedThe unique conditions led Ulteig to use an unusual technology approximately $250,000. Most important, there were zero for utilities in the region: helical piles. Advantages included CDOT-reportable accidents when the temporary roundabout was inthe ability to replace/repair foundations while the existing effect. The final roundabout has reduced the queue at the intersectionstructure was energized, which allowed new equipment from one minute, 35 seconds to 25 seconds. stands to be mounted directly to the helical pile while minimizing outages. The helical piles also avoided having to tear down the substation structures to install traditional concrete piers.// 24'