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Alcantarilla Pluvial sobre la Quebrada Manzanares
U.S. National Register of Historic Places
U.S. Historic district Contributing property
Puerto Rico Historic Sites and Zones
Location	Extending from approximately the junction of Ferrocarril and Esperanza Streets to approximately the junction of Javilla and Ensanche Streets San German, Puerto Rico
Coordinates	18°04′54″N 67°02′33″W / 18.081531°N 67.042515°W / 18.081531; -67.042515
Area	0.5 acres (0.20 ha)
Built	1835
Part of	San Germán Historic District (ID94000084)
NRHP reference No.	90000552
RNSZH No.	2000-(RO)-19-JP-SH
Significant dates
Added to NRHP	April 12, 1990
Designated RNSZH	December 21, 2000

The San Germán Underground (Spanish: Túneles subterráneos de San Germán) is a vaulted brick storm sewer system built in 1835 underneath the urban center of San Germán, Puerto Rico. The system is made of a central tunnel and several smaller side tunnels. The construction is of brick and rubble with modern concrete repairs. The main part of the system covers the underground course of Quebrada Manzanares from its headwaters to its resurgence as a surface stream, 842.53 metres (2,764.2 ft) away. The vaulted brick branches, most of them abandoned and sealed, date mostly from before 1910. The tunnel sections built up to 1918 are listed on the National Register of Historic Places as Alcantarilla Pluvial sobre la Quebrada Manzanares.

See also

• San Germán Historic District

Notes

1. The Alcantarilla Pluvial sobre la Quebrada Manzanares is a linear resource; the coordinates given represent the approximate midpoint of the line.

References

1. "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
2. González Mendoza, Juan R.; Vega Lubo, Ramonita; García Goyco, Osvaldo; Maza, Doris (September 1993), National Register of Historic Places Registration Form: San Germán Historic District (PDF), retrieved February 2, 2016.
3. "Nomination form". National Park Service. Retrieved 27 February 2010.

External links

• National Park Service images
• Los Tuneles.Information from the city of San Germán (Spanish)

v t e National Register of Historic Places in San Germán, Puerto Rico
Historic district	San Germán Historic District
Other properties	Jaime Acosta y Fores Residence Alcantarilla Pluvial sobre la Quebrada Manzanares Casa de los Ponce de Leon Church San Germán Auxerre of San Germán Convento de Porta Coeli Hacienda Buena Union Observation Tower
See also: National Register of Historic Places listings in San Germán, Puerto Rico and List of National Historic Landmarks in Puerto Rico

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• Tunnels completed in 1835
• Infrastructure on the National Register of Historic Places in Puerto Rico
• Buildings and structures in San Germán, Puerto Rico
• Tunnels in Puerto Rico
• Historic district contributing properties in Puerto Rico
• 1835 establishments in Puerto Rico
• Sewerage infrastructure on the National Register of Historic Places
• Infrastructure completed in 1835
• Tunnels on the National Register of Historic Places
• Water supply and sanitation in Puerto Rico
• Puerto Rico Registered Historic Place stubs
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