Client:
City of Sioux City, IA

Sioux City, IA

Key Features:

  • New utilities (sanitary sewer and water main) including adding storm sewer where none previously existed along with decorative street lighting and colored concrete sidewalks
  • Several stages of construction allowing business access at all times during construction
  • Involved a major intersection of two arterial streets with Morningside Avenue and S. Lakeport Street

Key Experience:

  • Planning and coordination with local businesses to maintain access during construction
  • Improving drainage along the corridor by adding storm sewer
  • Major intersection reconstruction completed half at a time

Street & Utility Improvements

Morningside Avenue is a main arterial street though the Morningside neighborhood of Sioux City, IA. The original infrastructure dated back to the early 1900’s, with streetcar tracks actually buried under the paving. This project also included the intersection of S. Lakeport Street, a north-south arterial street that extends to Gordon Drive.

Morningside Avenue was reconstructed from just east of S. Nicollet Street to east of S. Lakeport Street totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main (replacing two existing mains), storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.

To provide customer and truck delivery access to adjacent businesses, the project was completed in seven stages (including removing/replacing temporary crossovers on S. Lakeport Street through a raised median).

DGR services included gathering survey and utility data needed to prepare detailed plans and specifications as well as construction administration and observation using Federal Aid Funding for the reconstruction of Morningside Avenue.

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Floodplain Analysis

DGR employed a Geographic Information System (GIS) in conjunction with the U.S. Army Corps of Engineers to first determine the 100-year flood elevations and delineate the floodway boundaries.

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Distribution Conversion

Due to concerns with the age and condition of the structures, along with safety clearances to energized equipment and conductors, a project was undertaken to replace the old infrastructure with new underground lines and associated padmount equipment.

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Street & Utility Improvements

Morningside Avenue was reconstructed totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main, storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.

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Wastewater Treatment Facility (SBR)

The City ultimately determined a flow-through style SBR system to be the preferred choice based on the selection criteria and the ability to meet anticipated permit limits.

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Site Development

Planning started with site plan design for the new facility to offer maximum exposure to traffic on Highway 75.

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Wastewater Treatment Facility (SBR)

The new plant, rated for 5.3 million gallons per day (MGD) peak day, doubles the capacity of its predecessor.

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