Case Study: Design and installation of Large Diameter Open-Ended Pipe Piles for DOT Project: Lessons Learned-Video

Video Transcription

Video Summary

The presentation details a design and construction challenge on an Illinois DOT project replacing the east approach to the MLK Bridge in East St. Louis. Because railroads, roads, utilities, and other infrastructure constrained the available space, the design used four-foot-diameter open-ended pipe piles driven to limestone.<br /><br />During installation, one pile suffered severe damage near the rock surface: it buckled inward, leaving no clear path through its center and reducing its estimated capacity well below requirements. Investigation ruled out practical options such as drilling through the pile, removing it, or adding nearby piles. The team instead drove a five-foot-diameter pile over the damaged one, then connected the piles with a reinforced, concrete-filled splice using rows of shear studs. The contractor successfully installed the larger pile, which achieved sufficient capacity and met the revised design demands.<br /><br />The repair required close coordination among geotechnical and structural engineers, the contractor, and the transportation agency. The presenters emphasized considering unconventional solutions, evaluating structural as well as geotechnical impacts, and sharing construction problems so the industry can learn from them.

Keywords

Illinois DOT

MLK Bridge

East St. Louis

pipe piles

pile repair

geotechnical engineering

structural splice

construction challenges