CTLGroup was retained by RK+K Engineers on behalf of the Maryland Transportation Authority to evaluate the cylinder piles supporting the east and west approach spans of the westbound Chesapeake Bay Bridge. This four mile long bridge with multiple different structural systems and building materials required an extensive evaluation due to an earlier survey that reported cracks and other possible deficiencies.
CTLGroup evaluated 23 piles that were 54 inches in diameter and stood 65 feet tall. Representative piles for evaluation were selected based on condition results from an earlier survey and pile type. We performed extensive field work such as corrosion testing for half cell potential, corrosion rate, and concrete resistivity; cover over reinforcing steel work which included GPR testing of each test area; and material sampling of concrete cores from precast spun cast hollow core pikes and samples of concrete from inside the piles.
CTLGroup also provided laboratory services such as chloride testing on the cores and petrographic analysis of the core’s concrete properties. Our final product included a root cause analysis of pile deterioration and repair recommendations for the bridge.
Structural Engineering + Evaluation
Acoustic Emission Monitoring
Adjacent Construction Risk Management
Analysis of Extreme Loads: Wind, Earthquake, Blast
Modeling & Simulation
Monitoring for High Consequence Events
Repair, Restoration, Retrofit
Structural Condition Assessment
Structural Health Monitoring
Validation of Structural Behavior
Vibration Monitoring, Analysis, and Mitigation
Microscopy / Petrography