Landscape Architecture

Marion Roundabout Enhancements


Hall & Hall Engineer’s landscape architecture team led the design of this premier roundabout which incorporates a collection of integrated components including landforms, sculptures, plants and walls working harmoniously together.
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Dynamic movement of changing forms, planes, and lines of the centerpiece is visually experienced from various vantage points. The 83-foot diameter green space harkens to the rolling topography and agrarian heritage of eastern Iowa. HHE also worked closely with the sculpture artist throughout the design process to creating a unified theme through both art and landforms.

Services Provided

  • Landscape Architecture
  • Bidding Services
  • Construction Staking



Located in Ames, IA, the CyRide facility was sited in a floodplain and required the addition of concrete walls with removable flood gates to protect the building. If floodwaters did threaten in the future, gates will be installed to keep out up to four-vertical-feet of water. In serendipity, the concrete walls double as privacy walls for the building’s dining patio, adjacent to a high-traffic bus garage next door.

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A priority of CyRide was to create a design that employed sustainable practices wherever possible. This CyRide office addition obtained LEED Gold status and was honored with an AIA Iowa Excellence in Sustainable Design Award in September 2008.



The City of Dyersville selected Hall & Hall Engineers (HHE) to provide master planning services for flood prone areas in the heart of their community.
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The devastating flood of 2008 caused significant damage to a number of homes south of 3rd Avenue SW and east of 2nd Street SW.Immediately following the flood, the City, in conjunction with FEMA, offered a voluntary buyout of the properties damaged. Thirty property owners participated in this program.After the buyout, strict guidelines limited what could be redeveloped within the buyout areas to primarily green space. With careful planning HHE prepared a viable park plan which turned this significant greenbelt into a valuable asset for the community.

A number of amenities are proposed within the 55-acre green space including disc golf, passive recreation areas with native prairie plots, community gardens, a community orchard and a farmers market pavilion. The space is also intertwined with walking trails linking green space with the surrounding neighborhoods. These types of amenities invite social belonging and offer a quality of life that will attract people to live in the Dyersville community. When complete this green “necklace” will be a significant attraction that few other communities can match.



Prospect Meadows group selected Hall & Hall Engineers (HHE) to create a vision for a ‘One-of-a-kind’ regional recreation destination and sports complex. It is anticipated to provide a new level of service for both local community use and regional use through the Perfect Game amateur baseball organization.
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HHE provided site master planning services to guide the development of the sports complex. This process included the site selection and analysis of three sites to determine the best candidate to accommodate the regional attraction. An analysis of site features, including current and future adjacent land uses, land forms, utility access, vehicle access and roadway capacity were part of the process. HHE worked collaboratively with a market research group to determine appropriate size, uses and amenities within the complex. Phased implementation scenarios were also studied to determine appropriate phasing to align with available budget. A site traffic impact study, also, was prepared for and reviewed by Linn County and the Iowa Department of Transportation.

The 140-acre project site will include 17 ballfields, two miracle fields, a lake, walking trails, a splash pad, a playground, a grand entry plaza, and many other site amenities. The lake will capture stormwater for storage and irrigation, and double as an amenity. Several elevated spectator viewing plazas are designed to blend with site topography and showcasing vistas.



Kirkwood Community College requested Hall & Hall Engineers to create a unique and meaningful gateway design feature for their Linn County campus. The project incorporated a collection of integrated retaining walls with landforms, sculpture, plants and flag poles working harmoniously together.

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The innovative wall design emulates mechanical gears and sprockets, capturing the essence of Kirkwood Community College ‘s beginning as an educational institution. Technology and agriculture, in the past and still today, are integral parts of the Kirkwoods’ legacy.




  • Landscape Architecture
  • Bidding & Construction Services
  • Construction Staking
  • Monument Signage Layout & Design
  • Theme Development
  • Detailed Site Grading