Trends Winter 2019 | Page 29

a historic renovation because of the heavy fire damage, the areas while enhancing the neighborhood. Bioretention basins, owners are trying to preserve as much of the historic character rain gardens, porous pavement on driveways and walkways, as possible. Matt Ashby, an urban planner for Ayres who also and similar techniques help urban infrastructure handle acts at the executive director for the Windsor DDA, said the whatever nature brings. project’s success is a shining example of what good things can happen when a community and private developer work Engineering around tourism together. “We were very fortunate to have a developer that was The small City of Hayward, a tourism hub for northern Wisconsin, willing to move forward after the fire,” he said. “It’s a testament to the project that they had a driving desire to see it through despite the setbacks.” Low Impact Development builds resilience into infrastructure is host to festivals and events year-round, many of which draw crowds in droves. More than 13,000 skiers and an estimated 30,000 spectators descended upon the City for this year’s Birkebeiner week, for example. As urban areas continue to develop, managing stormwater becomes both more challenging and more necessary. As much as 90% of the surface area of a city could be covered by streets, sidewalks, parking lots, and buildings. These impervious surfaces prevent the natural dispersal of water, and rain and snow melt cannot enter the ground. The community relies on a system of drains and pipes to divert the stormwater to detention or retention facilities that collect the stormwater, remove pollutants, and slowly release the stormwater to control flood flows. Tourism is undoubtedly the largest and most vital component of Hayward’s economy. As such, the downtown streets receive tremendous traffic. So how is there ever a “good” time to pause for the construction of much needed infrastructural improvements? The community is about to find out. Earlier this year, Ayres helped the City secure a $1 million Community Development Block Grant to help fund the reconstruction of deteriorated street, sanitary sewer, storm sewer, and water infrastructure in its downtown business district. Ayres is now providing engineering services associated Low Impact Development (LID) is a stormwater management with the $1.5 million project. Construction is slated to start in approach that minimizes impervious surfaces and maximizes March – earlier if weather permits – and before some downtown natural site features to manage stormwater. The design of businesses open for the season. Closing Main Street will be Spruce Street in Tampa, Florida, is making good use of LID unavoidable, but to minimize disruption the team will stage concepts. One part of the design is to maintain existing ditches efforts, working their way up the street so the entire project instead of removing them, which allows for natural stormwater area isn’t torn up at the same time. Because work involves infiltration. Ayres designers are also creating a linear park on top underground utilities, the blocks under construction won’t have of an existing large ditch. Special drainage structures will allow vehicular access, although drivers can still park on back and water from the park to infiltrate into the stormwater system. side streets. Sidewalks will be left in place as long as possible, Another Tampa project, this one on East Columbus Drive, is with temporary bridges or ramps providing access to buildings using captured stormwater to irrigate trees. The design includes while the concrete cures. Work is scheduled to wrap up by multiple “bulb outs” to accommodate street trees. Trees and the third week of June – just in time for Musky Fest and the similar landscape elements cut down on the size of impervious summer tourist season. www.AyresAssociates.com 29