The Miami Intermodal Center ( MIC) facility connects local and regional transportation networks to Miami International Airport, including Tri-Rail, Amtrak, buses, and taxis. For train-riding comfort, the project criteria required the vertical frequency of vibration of the composite section to be greater than 2.5 Hz. Choosing a high-performance precast concrete U-beam design enabled the team to meet the requirement for rigidity while still providing the service and strength limit states for the maximum span considered.
The use of precast concrete was an economical choice for both the short and the long term. The bridge was constructed at an estimated half the cost of a similar precast segmented bridge, and was up to 20% less expensive than a similar steel structure. The U-beam precast system provided a low maintenance cost, is simple to inspect, and it allowed for a very pleasant aesthetic solution.
Key Project Attributes
Project/Precast Scope
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