ASCE-SC Names “Engineering Design of the I-26/Port Access Road Interchange” as the 2022 South Carolina Project of the Year

We are excited to share the American Society of Civil Engineers South Carolina Section (ASCE-SC) named “Engineering Design of the I-26/Port Access Road Interchange” as the 2022 South Carolina Project of the Year.

I-26 port access

I-26/Port Access Road Interchange

This project provides a direct connection from I-26 to the Hugh Leatherman Container Terminal under construction on the former Charleston Navy Complex in North Charleston, South Carolina, while maintaining service for local, commuter, and commercial traffic.

I-26 port access

S&ME produced geotechnical and environmental site characterization for the South Carolina Department of Transportation (SCDOT) in preparation of the design-build RFP. This included a non-linear site-specific response analysis to provide ground motions for use in the geotechnical and structural design.

S&ME Services

As part of the design-build team, S&ME performed additional geotechnical explorations to characterize the numerous ramps and roadway alignments.

I-26 port accessDuring construction, S&ME confirmed the design by performing high-strain dynamic testing with a Pile Driving Analyzer (PDA) during installation. During the CEI firm’s foundation testing of the drilled shaft foundations, S&ME reviewed the crosshole sonic logging (CSL), and thermal integrity profiling (TIP) reports for determination of shaft integrity and performance.

Services also included pre-and post-construction condition surveys of 104 residential and 19 commercial structures prior to construction activities, and vibration monitoring at up to four locations during demolition and construction, including drilled shaft casing installation, earthquake drain installation, pile driving, and MSE wall construction. During the pre-construction condition survey phase, crack gauge devices were installed on various structures to monitor any movement of existing cracks.