City of Maryville

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South Main Corridor Improvement Project


In July, City staff and the Northwest Regional Council of Governments (NWRCOG) partnered to submit an application to the United States Department of Transportation (USDOT) for Better Utilizing Investments to Leverage Development (BUILD) funds to complete the South Main Corridor Improvement Project. BUILD transportation grants are highly competitive federal grants that replace the pre-existing Transportation Investment Generating Economic Recovery (TIGER) grant program. BUILD grants are investments in surface transportation infrastructure and were to be awarded for projects having a significant local or regional impact. In FY 2018, Congress appropriated $1.5 billion to the BUILD grant program for nationwide infrastructure. A total of 851 applications were received with funding requests totaling over $11 billion. The USDOT selected a total of 91 projects to fund throughout the United States and only four (4) in the State of Missouri. On December 6th, the City of Maryville was notified that the South Main Corridor Improvement Project will receive $10,488,088 in BUILD funds. 

Project Scope:

The South Main Corridor Improvement Project, STP-4300 (112) will reconstruct approximately 1.5 miles of South Main Street from South Avenue to Highway 71 Bypass into a complete street, including re-configuring intersections and adding designated turn lanes, realigning, reducing and combining access points and curb cuts, constructing pedestrian amenities including sidewalks and a shared-use path, installing and updating traffic signals, relocating and potentially undergrounding utilities, replacing water and storm infrastructure, and enhancing streetscape elements. 

Engineering to Date:

In 2015, the City of Maryville hired SK Design Group, Inc. to perform a traffic study on the South Main Street corridor. The intent of the study was to determine the best way to serve existing and future travel demands along South Main Street from South Avenue to Highway 71 Bypass.  The study's general scope included a review of existing traffic conditions, lane configurations, signal spacing and timings, traffic control devices, crash patterns and availability of non-motorized facilities such as sidewalks and bike routes. The public involvement component of the study was ongoing throughout the plan development process. The consultant team conducted several stakeholder collaboration sessions, presentations and community opinion surveys.  Data collection efforts for the study included review of the Maryville Comprehensive Plan, existing rights-of-way, utility systems, drainage systems and traffic volumes. Additional information collected included obtaining three years of crash history, performing a Road Safety Assessment (RSA), and conducting turning movements at key intersections in regular and peak-hours. 

The South Main Traffic Corridor Study developed a conceptual framework for the ideal roadway design and documented opportunities for increasing operational efficiency and safety for all road-users.  The plan established an Access Management Guide that has been used by staff over the last several years with new developments along the corridor. The conceptual plan was presented to the City Council on August 24, 2015 and outlined improvements in three (3) specific phases.  The study recommended Phase I improvements from the intersection of South Avenue to the northern entrance of Walmart.  The intersection of South Avenue was defined as the most severe functional issue along the corridor causing the most issues with congestion. Phase II noted improvements from the northern Walmart entrance south to Highway V. The final section, Phase III, continued the functional and aesthetic improvements form Highway V south to Highway 71 Bypass. 

On February 22, 2016, the City Council approved a Design Professional Services Agreement with SK Design Group, Inc. for engineering design for the South Main Corridor Improvements, Phase I. Design costs for Phase I were split among the FY'16 and FY'17 budgets due to financial constraints. In April 2017, voters approved the renewal of the 1/2 cent capital improvement sales tax with the intention of improvements to South Main being a high priority. Phase I engineering and design is approximately 85% complete and that portion of the project was scheduled for Spring 2019 construction. 

In December 2018, the City was notified that it will receive $10,488,088 in BUILD funds for the South Main Corridor Improvement Project, STP-4300 (112). Grant funding will now allow the City to design and construct all three phases of the project at once in 2020. In addition to saving funds in construction due to the scope, the construction window will be reduced from approximately 7-10 years to two construction seasons. This will reduce the disruption and inconvenience to businesses, property owners, and all Maryville citizens who travel the important corridor. 

Property Owners:

The City of Maryville has hired SK Design Group, Inc. to begin preliminary engineering and design on the remainder of the corridor for the South Main Corridor Improvement Project. Preliminary engineering and environmental reviews are estimated to be complete in November, 2019. At that time, city staff will be scheduling one-on-one meetings with each property owner and business impacted by the project. These meetings will occur from November 2019 through March of 2020. Project details will outlined and the meetings will serve as an opportunity to provide further input and address any concerns. Throughout the engineering process, a series of public meetings will also be held to gather feedback and detail certain project milestones. If you have any concerns on how this project may impact your property or business, please feel free to contact City Manager, Greg McDanel at 660-562-8001 or Construction on the South Main Corridor Improvement Project is anticipated to begin in July 2020 and be complete in June 2022. Options for access will remain for all business along the corridor during construction and those details will be developed through the preliminary engineering process and in discussions with property owners.