Woodbury Multi-Lane Roundabout
This three-mile-long “Complete Streets” project involved construction of the first multilane roundabout on a high-speed arterial roadway in the state of Minnesota. Other prominent features included mechanically stabilized embankment (MSE) walls, pedestrian underpasses, multiuse trails, traffic signals, stormwater best management practices and landscape architecture.
Washington County and the City of Woodbury, located east of St. Paul, have recently experienced one of the fastest growth rates in the state of Minnesota. Because of rapid growth, Radio Drive (CSAH 13), a two-lane arterial corridor in Woodbury, became notorious for traffic delays and high crash rates, including pedestrian fatalities. The intersections at Lake Road and Bailey Road were especially congested. County and City officials wanted to improve safety, traffic mobility, and aesthetic appeal along the Radio Drive corridor, but preliminary construction cost estimates had ranged up to $14 million, with construction period estimated at two years.
HR Green worked with the County to establish a value-engineering approach to the Radio Drive corridor. The VE process relentlessly pursued creative means to reduce cost and shorten the schedule, while unleashing the corridor’s potential to serve the community in multiple ways. The Radio Drive improvements were constructed at a cost of $9.6 million – a savings of more than $4 million over preliminary estimates – and construction time was reduced by 12 months.
In order to increase public confidence in the use of roundabouts, Washington County created a multi-faceted public education initiative called “Roundabout University.” This fun and informative program used a walk-through scale model of the roundabout, a matchbox car roundabout model, newsletters, open houses, public access cable television, newspaper articles and other media to deliver a consistent message to motorists about how to drive through a multilane roundabout.
Awards: Project of the Year, Minnesota County Engineers’ Association – 2008 and Grand Award American Council of Engineering Companies – MN – 2008