I-77 Bridge Preservation Project – Columbia, SC
Project Highlights
Location: Columbia, SC
Year Completed: 2023
Cubic Yards of LMC: 1,800
Latex Type: Trinseo MOD A/NA
Cement Type: Type IL Argos Cement
Project Overview
Modified Concrete Suppliers (MCS) partnered on a major I-77 bridge preservation project just south of Columbia, South Carolina. The scope included milling, hydrodemolition, and Latex Modified Concrete (LMC) overlays on nine bridges. Each structure received a brand-new LMC overlay, saw-cut grooving, and upgraded expansion joints. The project required a complete shutdown of eastbound and westbound I-77, with each direction closed for nine days.
Background & Challenges
The South Carolina Department of Transportation (SCDOT) set an ambitious timeline for this project. With only a nine-day closure window in each direction, Swank Construction, Hydro-Technologies, and MCS had to coordinate seamlessly to complete a large volume of work in a very short period. Another challenge was the use of Type 1 Latex Modified Concrete, which requires a four-day cure time, adding to the scheduling complexity. While some joint repair was completed with Rapid Set LMC, the majority of work was completed with Type 1.
Our Solution
To meet the aggressive schedule, MCS deployed additional manpower and equipment, often working across multiple bridges at once. On some nights, our crews were placing LMC on three bridges simultaneously. Thanks to teamwork, planning, and execution, the first phase finished one day ahead of schedule, and the second phase wrapped up two days early—a major win for both the project team and the traveling public.
Results
The I-77 bridge preservation project was completed ahead of schedule, ensuring safer, smoother travel for commuters in Columbia. Each of the nine bridges now benefits from a durable Latex Modified Concrete overlay, improved rideability, and long-term protection against South Carolina’s demanding climate.
Why Choose Modified Concrete Suppliers
MCS has decades of experience delivering high-performance LMC solutions for state DOTs across the country. On this project, our collaboration with Hydro-Technologies and Swank Construction exceeded SCDOT’s expectations while maintaining a strong focus on safety, quality, and durability. When time is short and quality matters, MCS delivers.
