The La Plata River is the longest river in Puerto Rico. It is located in the north coast of the island. It flows from south to north, and drains into the Atlantic Ocean about 11 miles (18 km) west of San Juan. The mouth of the river is a resort area with white sandy beaches.
Puerto Rico Highway 167 (PR-167) is one of the main highways in the San Juan–Caguas–Guaynabo metropolitan area of Puerto Rico. Highway 167 starts at Puerto Rico Highway 165 in Levittown and goes until Puerto Rico Highway 156 in Comerío. It is two-lane per direction all through Cataño and a vast area of Bayamón, and becomes rural a couple of kilometers before entering Naranjito. During the rainy season this road is risky as there is chance of rock fall and debris onto the road. This occurs mainly due to an increase in the moisture content of the soil, which loosens the suspended rocks adjacent to the highway. It has been proposed to make this road fully parallel to the future tollway PR-5, which will be extended until Comerío. The future tollway will pass through the only cable-suspended bridge in the island in Bayamón near the border with Naranjito.
The Las Cabañas Bridge is a historic highway bridge in Adjuntas municipality, Puerto Rico. Built in 1919 to provide access to a key coffee-producing region, it was financed by nearby plantations through public subscription. Designer Rafael Nones and builder Félix Benítez Rexach, two of the most prominent figures in Puerto Rican bridge construction in the early 20th century, used a unique combination of steel and concrete technologies to produce a girder design unlike any other on the island and possibly beyond.
The Villarán Bridge, also known as the Canóvanas Bridge, is a historic bridge over the Canóvanas River in Canóvanas, Puerto Rico. Built in 1892 on the highway between Río Piedras and Río Grande, its iron superstructure was imported from Europe and set on masonry abutments. It is the best-preserved example of an Eiffel pony truss bridge in Puerto Rico or the United States. By 1994, the bridge had been replaced by an adjacent span for vehicular use, but it remained open for pedestrian use.
Manatí Bridge at Mata de Plátano, also known as Puente Juan José Jiménez and listed as Bridge #321 in Puerto Rico's bridge inventory, was built in 1905 in Hato Viejo, Ciales, Puerto Rico. It was listed on the National Register of Historic Places in 1995.
Puente de las Calabazas is a single-span lattice girder bridge over the Cuyón River near Coamo, Puerto Rico on the Carreterra Central that dates from 1882. It was designed by Ricardo Camprubi and was fabricated by Eugen Rollin and Co., a Belgian firm that exported via Spain from Braine le Comte, Belgium. Prolific engineer Camprubí designed several single span lattice bridges in Puerto Rico. He also designed the first two-span lattice girder bridge in Puerto Rico, the Padre Inigo Bridge, which is also NRHP-listed. All of these were part of the Carretera Central.
The Arenas Bridge is a truss bridge built in 1894 between the municipalities of Cayey and Cidra in Puerto Rico. Also known as Puente Rio La Plata, it was the longest bridge constructed in Puerto Rico during the Spanish colonial period. It crosses the Rio de la Plata, the longest river in Puerto Rico. According to the U.S. National Park Service, "[t]his is the most important metal bridge in Puerto Rico from the period." The bridge is still standing.
The Carretera Central is a historic north–south central highway in Puerto Rico, linking the cities of San Juan and Ponce by way of Río Piedras, Caguas, Cayey, Aibonito, Coamo, and Juana Díaz. It crosses the Cordillera Central. Plans for the road started in the first half of the 19th century, and the road was fully completed in 1898. At the time the United States took possession of Puerto Rico in 1898, the Americans called it "the finest road in the Western Hemisphere."
This portion of National Register of Historic Places listings in Puerto Rico is along the central mountain region, from Las Marías and Maricao in the central-west to Juncos in the central-east, including the slopes of the Cordillera.
The Groton Bridge Co. was an American construction company.
The Hondo River Bridge was a historic bridge over the Hondo River in Comerío municipality, Puerto Rico. As of 1995, it was the oldest bridge truss in Puerto Rico, employing a double Warren pony truss design and unique open web transverse joists. It was originally installed in 1881 as one of three spans of the Reyes Católicos Bridge over the Plata River on the San Juan–Mayagüez road, using metal parts fabricated in Belgium. After a hurricane destroyed one of the other spans of the Reyes Católicos Bridge in 1899, this surviving span was moved and re-installed on new abutments under the supervision of engineer Rafael Nones in 1908, as part of the Comerío–Barranquitas road. It was finally removed and replaced in 2001.
The Puente Río Portugués is a historic bridge over the former course of the Río Portugués in barrio Playa in the municipality of Ponce, Puerto Rico. The bridge was added to the U.S. National Register of Historic Places in 2015. The bridge is prominent as "the oldest longitudinal steel beams / reinforced concrete bridge built within the historic Carretera Central". It is located on Avenida Hostos, just south of its intersection with Ponce By Pass.
The General Méndez Vigo Bridge is a brick barrel vault bridge that brings what is now Puerto Rico Highway 14 across the Río Las Minas near Coamo, Puerto Rico. Also known as Bridge #173 and as Puente Rio las Minas, it was built in the year 1862 as part of Puerto Rico's Carretera Central. The bridge is historically significant for its association with the U.S. Army Corps of Engineers and its role in the Spanish–American War of 1898. It is also the only surviving masonry bridge in the southern section of the Carretera Central.
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 General Norzagaray Bridge is a brick and masonry barrel vault bridge built in 1855 in San Juan, Puerto Rico. Also known as Puente de los Frailes, it brings what is now Puerto Rico Highway 873 across Frailes Creek, a tributary to the Guaynabo River. It has eight 9.8-metre (32 ft) barrel vault spans. Its total length is 120.7 metres (396 ft) and its roadway width is 7.00 metres (22.97 ft). It was listed on the National Register of Historic Places (NRHP) in 1995.
The Cayey Bridge, also known as Puente de Cayey, is an iron lateral lattice girder bridge in Puerto Rico that was built in 1891. It brings Puerto Rico Highway 15 over the Guamaní River.
The Puente de Añasco, also called Puente Salcedo, is a bridge spanning between Añasco, Puerto Rico and Mayagüez, Puerto Rico. It was listed on the National Register of Historic Places in 2011. It is located at Kilometer 146.1 of Highway 2.
The Silva Bridge is a Pratt pony truss bridge in Puerto Rico which was built in 1897 and was listed on the National Register of Historic Places in 1995.
The La Liendre Bridge, spanning Beatriz Creek, a tributary to the Río de la Plata, between Cayey, Puerto Rico and Cidra, Puerto Rico, was built in 1877 and was listed on the National Register of Historic Places in 1995.
The Río Matón Bridge, in Matón Abajo, a barrio of Cayey, Puerto Rico, was built in 1886. It was listed on the National Register of Historic Places in 1995.
