Miami-Dade Transit | Metrorail Rapid Transit System
Dade County, Florida
The Metrorail consists of 23 miles of elevated transit structures and 20 passenger stations. Near the end of construction, the Miami Dade County Office of Quality Assurance retained RRJ to consult on concerns regarding elements of the system's structure design and construction. Executed over a five-year period, RRJ provided engineering consulting services including: an investigation and structural analysis of the prestressed, precast concrete guideway double-tee elements; full-scale load testing; specialized field testing consisting of condition surveys, inspections and radiography; development of a comprehensive baseline inspection of the entire girder population; review of the pier cap ledge capacity for severe derailment loading involving a design review of ledges, and full-scale load testing of four caps; development of new methods of analysis and repair of pier caps, and laboratory load testing of a 1/3 scale model of pier caps. RRJ developed of a comprehensive, integrated structural bridge inspection program for the Metrorail System.