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ACEC of Missouri Awards Excellence in Engineering Award to HR Green Project

Hr Green, Inc.

HR Green was recently awarded a 2016 Engineering Excellence Award from the American Council of Engineering Companies, Missouri Chapter (ACEC/MO) for its Route 109 Widening and Roundabouts project.  HR Green was the prime engineering consultant on the project, providing civil engineering design services and management of all subconsultants.

The City of Wildwood and HR Green partnered to innovatively gather various funding sources and funding agreements to make this project a reality.  In 2007 MoDOT led a planning study for Route 109 which evaluated and ultimately recommended the implementation of six roundabouts within the Route 109 corridor between Route 100 to Route BA.

Initial traffic studies and VISSIM simulations of the proposed Pond-Grover roundabout indicated a strong need to expand the proposed improvements to include the widening of Route 109 to 4-lanes both north and south between Clayton Road and Route 100.  Due to safety concerns, it was recommended also to install a raised median on Route 109 to restrict left turns and more fully utilize the Pond-Grover roundabout.  In addition, for improved operations and safety, a second multi-lane roundabout was recommended at Route 100.

The Route 109 and Pond-Grover Loop Road improvements are the result of many years of planning to improve and widen a one mile section of Route 109 in the City of Wildwood in St. Louis County.  Because this section of Route 109 featured a high crash rate, including one fatality, the primary goal of the project was to improve safety.  This was accomplished in part through the implementation of two, multi-lane roundabouts and through the use of raised medians and restricted left turning movements at side streets for access management.  Additional safety measures for non-motorized users included the addition of bike lanes and modifications to the City’s existing shared use path on Route 109, and two grade-separated trail crossings to minimize pedestrian and bicycle interaction with vehicles at intersections.

ACEC/MO, is an organization of professional engineering firms in private practice. Formed July 12, 1955 and incorporated under the laws of the State of Missouri, ACEC/MO, is a founding member organization of American Council of Engineering Companies (ACEC).

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