Date of Defense

4-15-2025

Date of Graduation

4-2025

Department

Civil and Construction Engineering

First Advisor

Yufeng Hu

Second Advisor

Valerian Kwigizile

Abstract

The M-10 Freeway, also known as the John C. Lodge Freeway, is bordered by retaining walls at the project location, one section of which required replacement to meet safety and serviceability standards. Located in Detroit, Michigan, this project focused on the redesign and replacement of a 300-foot section of retaining wall along the southeast-bound lanes of M-10, between Curtis Street and Outer Drive. The 20-foot-tall retaining wall also supports traffic loads from the overhead James Couzens Freeway. Through geotechnical and structural design, several alternatives were developed and evaluated. A CIP concrete cantilever wall was selected with a height of 21 feet, a footing width of 11 feet, a heel projection of 6 feet, a toe projection of 3 feet, a stem that is 2 feet thick throughout, and a minimum depth of embedment of 4 feet. Reinforcement details were also determined within the structural design in accordance with the 9th Edition of AASHTO LRFD Bridge Design Specifications. A comprehensive Maintenance of Traffic (MOT) plan was developed to maintain traffic flow during construction. The MOT plan considered the implications of the removal and replacement of the wall. The MOT plan for the M-10 southbound retaining wall project was developed following a comprehensive traffic analysis and strategic planning process. Through PTV Vistro, Detour Route #1 was selected for both phases of the construction, showing a minimal intersection and travel time delay impact. Signage and closures were designed for both M-10 and the service drive, James Couzens Freeway, following the MUTCD and MDOT’s Work Zone Mobility Guidelines. M-10 required full closure during demolition of the pre-existing wall and partial closure during the remainder of construction. James Couzens Freeway required full closure during the entire duration of demolition and construction. Additionally, a detailed construction plan was created, addressing scheduling, planning, and resource allocation. The project runs from 06/02/2025 through 10/06/2025. The four main milestones were site preparation, earthwork/demolition, structure, and site restoration. A total project cost of $2.34 million was estimated by quantifying and estimating 70 line items with the use of MDOT’s Weighted Average Item Price Report. Additionally, the line items were allocated within the tasks of Microsoft Project where it was determined that the structure milestone accounted for 33% of the total project cost. This project enhances the resilience of local infrastructure, benefiting the surrounding community.

Comments

Co-authored with:

Jake Sajewski

Jessica Slagter-Enaohwo

Access Setting

Honors Thesis-Open Access

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