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Project Overview

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Project Overview

Marion's Central Corridor is one of the most prominent and identifiable areas within the community. Properties once reserved for warehouses and industrial uses are now better positioned for a mix of commercial and residential development. Infrastructure within the Central Corridor is aging and in need of replacement. Several properties are underutilized and ready for redevelopment. When these two factors co-exist, simply rebuilding an existing street is not always the best long range decision. While a basic capital improvement is often the easiest choice, projects of this type must have a more visionary and long-term approach.

The Marion Central Corridor Project is a capital improvement project. This means the City of Marion will invest in public improvements such as pavement, sewers, sidewalks, trails, and streetscaping. The City will make these investments not only to improve the safety and quality of roadways, but to create an environment that fosters private redevelopment. A revitalized Central Corridor will solidify Marion’s place as a regional hub for business, urban-living, and entertainment. The project will implement a long term traffic management plan for Marion’s core, balancing traffic between  6th and 7th Avenues and creating a more pedestrian-friendly atmosphere in Uptown Marion. Collectively, these and other features will position Marion as an independent and self-sustaining regional destination.

Intense planning initiatives have been underway throughout the Central Corridor dating back to 2009 when the Central Corridor Master Plan was approved. Since then, the Uptown Streetscape Plan and the West End Master Plan have been adopted. All of these documents were a result of countless hours invested by business professionals, land owners, City staff, and citizens.


The first phase of the Central Corridor Project was completed in 2012 with the reconstruction of 6th Avenue from 8th Street to 13th Street, and improvements such as a multi-use path, pedestrian accommodations and streetscaping. Storm sewer, sanitary sewer, and water main upgrades also took place.

The second phase of the project moved to the west end of the corridor, encompassing the roundabout at the intersection of 7th Avenue and 7th Street. The City was awarded a $1 million grant from the Iowa Department of Transportation's Clean Air Attainment Program for the installation of the roundabout. Construction began in the spring of 2016 and the intersection opened in November of that year.

Video by Calcam Ap

Additionally, construction was completed in 2017 along 7th Avenue from 26th Street to 31st Street; this area included the construction of a roundabout which will connect the extension of 6th Avenue to 7th Avenue near 26th Street. An area developer is working with the City in a public/private partnership to construct the remaining phases of the Central Corridor Project. The remaining phases will include a divided 4-lane road, a roundabout at 6th Avenue and 15th Street, street lights, multi-use pathways, hardscaping and landscaping.


Jacob Hahn; Assistant City Engineer
Phone: 319-743-6340
Email Jacob

Stay Informed

Periodic updates, specific to this project, will be sent out as additional information is available. Request to be added to that list by contacting Jacob Hahn.


Central Corridor Alignment with streetscape, updated Oct. 2012

Central Corridor Alignment 10.2012


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