International Bridge Technologies

PR-181 Bridge – San Juan, Puerto Rico

Technical details
Puerto Rico Department of Transportation & Public Works

Construction Completed: 2005

San Juan, Puerto Rico
Contractor: Las Piedras Construction
SYSTRA IBT’s Role: Bridge Design Consultant


Span Length: 50 m (164 ft)

Width: 21.8 m (71.5 ft)

Depth: 3.75 m (12.3 ft)

The twin precast segmental box girders are supported at five locations by a central pier with transversely post-tensioned dia­phragms. The cast-in-place piers are supported on steel pile foundations.

The bridge was erected in balanced cantilever with a crane on the ground. Balanced cantilever construction was also used at expansion joint piers using temporary post-tensioning cables and blocking to eliminate falsework. The temporary tendons were released after establishing continuity in the spans adjacent to the expansion joints.

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