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Puente de Trujillo Alto
U.S. National Register of Historic Places
Puerto Rico Historic Sites and Zones
Puente de Trujillo Alto
Nearest city	Trujillo Alto, Puerto Rico
Coordinates	18°21′31″N 66°0′13″W / 18.35861°N 66.00361°W / 18.35861; -66.00361
Area	less than one acre
Built	1939-1941
Engineer	Robert R. Prann
Architectural style	Pennsylvania through truss
MPS	Historic Bridges of Puerto Rico MPS
NRHP reference No.	09001289
RNSZH No.	2008-19-01-JP-SH
Significant dates
Added to NRHP	January 28, 2010
Designated RNSZH	October 6, 2008

The Puente de Trujillo Alto is a Pennsylvania through truss bridge built during 1939–1941 in Puerto Rico in the Trujillo Alto municipality of Puerto Rico. At was the longest single-span bridge in Puerto Rico.

The bridge construction was funded as part of the New Deal. The supporting structures and bridge were built by Robert Prann, an engineer who established private practice in Puerto Rico, with steel components manufactured by U.S. Steel.

Crossing 70 feet (21 m) above, it spans the Río Grande de Loíza, the largest river by volume in Puerto Rico. The height was intended to keep this bridge above flooding that had destroyed a previous bridge in 1936. However, in 1945 even this bridge was flooded over and almost carried away.

A four-lane concrete bridge was built adjacently during 1983-85 as a replacement, with the historic bridge being slated for demolition, but local protests led to its being kept.

Gallery

• Historic bridge
• The bridge in 2018
• Detail of the bridge

References

1. "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
2. ^ "National Register of Historic Places Registration: Puente de Trujillo Alto" (PDF).
3. Luis F. Pumerada-O'Neill (July 31, 1984). "Historic Bridges of Puerto Rico". National Park Service. Retrieved 2016-05-13.
4. Marull del Río, José E. (2009-12-10). "National Register of Historic Places Registration Form: Puente de Trujillo Alto" (PDF). Governor of Puerto Rico - State Historic Preservation Office. Retrieved 2023-03-01.

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