Municipal Facilities

Jean Oxley Linn County Public Services Center


Following the devastating flood of 2008, Linn County Public Services Center went through a major renovation. Given the congested site it was imperative to incorporate innovative ways to manage storm water while maximizing parking at this frequently visited facility.

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The site design included the reduction of impervious pavement with the use of pervious paver parking stalls, designated parking stalls for low-emitting and fuel efficient vehicles, landscaping that does not require irrigation and construction waste management during construction to reduce construction waste.

project Highlights:

  • LEED Silver Rating
  • Pervious paver parking lot: rainwater filters through pavement stratum to underlying soils capturing pollutants
  • Art/Sculpture: HHE staff person served on Linn County Public Arts Board during the selection of the artists providing pieces for both interior and exterior spaces
  • Native landscaping: low to no irrigation needs

Fairfax Pedestrian Bridge & Trail


The City of Fairfax has continued growing to the north over the past decade. These new areas are separated from the older core area of the City by Prairie Creek. Hall & Hall provided the City with a design for a new trail and bridge over Prairie Creek to offer a safe connection between the new and old areas of the City for pedestrians and bicyclists.

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The project included 1,300 LF of 11’ wide x 6” thick PCC trail and a 230’ long x 14’ wide, pre-engineered steel truss trail bridge, and is the first of a multi-phase project to complete the connection between the northern and southern portions of the City. The project utilized federal funding through the Transportation Enhancement portion of the Surface Transportation Program. Hall & Hall assisted the City through each phase of the project, including concept planning, identifying funding sources, acquiring property, permitting, design, and construction engineering.

Services Provided

  • Assistance with applying for and securing Federal funding
  • Topographic and boundary survey
  • Property acquisition services
  • Wetland delineation
  • Civil and structural design
  • Construction observation and administration



Working with the City of Coralville and Neumann Monson Architects, Hall & Hall provided professional engineering services for the site design and layout of the new Transit and Parks facility.

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Through green strategies in treating stormwater and native vegetation, we were able to earn a LEED Silver Certification

Services Provided:

  • Site Design and Layout
  • Utility Infrastructure
  • Green Drainage and Parking Areas
  • Detailed Site Grading



The City of Cedar Rapids looked to repair the Public Works Building and Solid Waste Recycling facilities from flood damage sustained during the June 2008 event. In doing so, several departments were consolidated into this new 360,000 sf facility.

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The project includes office space for 400 employees and combined maintenance and storage facilities for over 500 municipal service vehicles.

 This facility receives several community visitors on a daily basis and it was a goal of City leaders to showcase innovative and energy efficient design. For instance, storm water management is handled through infiltration processes within bio-retention cells dispersed among the parking area. These cells include a free draining soil medium and native plantings to help remove silt and harmful chemicals before the rain water leaves the site.

Project Features

  •  LEED Silver
  •  Bio-retention cells
  •  Native landscaping
  •  Entry plaza and courtyard
  •  Floodplain management



In cooperation with Novak Design Group, Hall & Hall Engineers provided the site design services for the new Hiawatha City Hall. Being within the McCleod Run watershed, special consideration was taken to minimize the impacts this urban site would have on the water systems and the overall environment.

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Mitigating storm water run-off and increase on-site infiltration, required several storm water management practices to be incorporated across the entire site. Curb cuts leading into abio-swale island captured substantial runoff contaminants from the parking lot. Another bioretention area near the front entrance managed site run-off from the south half of the parking area, the surrounding lawn is graded into a filtration cell. The rear parking lot uses porous concrete within the parking stalls to remove pollutants coming from vehicles and the surrounding site.

Native forbs and grasses keep maintenance low and provide visual interest throughout the season.



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