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Puente De Trujillo Alto
The Puente de Trujillo Alto is a Pennsylvania through truss bridge built during 1939–1941 in Puerto Rico in the Trujillo Alto, Puerto Rico, 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 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 Antiguo puente en Trujillo Alto, Puerto Rico.jpg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trujillo Alto, Puerto Rico
Trujillo Alto () is a Trujillo Alto barrio-pueblo, town and Municipalities of Puerto Rico, municipality of Puerto Rico. Located on the northeastern coastal plain on the boundary between the Northern Karst Belt and Sierra de Luquillo, it is north of Caguas, Puerto Rico, Caguas and Gurabo, Puerto Rico, Gurabo, southeast of San Juan, Puerto Rico, San Juan, and west of Carolina, Puerto Rico, Carolina. Part of the San Juan–Bayamón–Caguas metropolitan area, San Juan metropolitan area, Trujillo Alto is spread over 6 barrios and the downtown area and administrative center of Trujillo Alto barrio-pueblo, Trujillo Alto Pueblo. Trujillo Alto was officially founded in 1801, but gained more importance during the 20th century. Due to its proximity to the capital, San Juan, Puerto Rico, San Juan, the city has become a suburb of the metropolitan area, which has sparked its growth during recent years. The population of Trujillo Alto has increased through the last century from 9,576 (1930) to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania Through Truss
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements, typically straight, may be stressed from tension, compression, or sometimes both in response to dynamic loads. There are several types of truss bridges, including some with simple designs that were among the first bridges designed in the 19th and early 20th centuries. A truss bridge is economical to construct primarily because it uses materials efficiently. Design The nature of a truss allows the analysis of its structure using a few assumptions and the application of Newton's laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin-jointed where the straight components meet, meaning that taken alone, every joint on the structure is functionally considered to be a flexible joint as opposed to a rigid joint with the strength to maintai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puerto Rico Register Of Historic Sites And Zones
The Puerto Rico Register of Historic Sites and Zones (Spanish language, Spanish: ''Registro Nacional de Sitios y Zonas Históricas'') is a Government of Puerto Rico, Puerto Rican government program adopted by the state Puerto Rico Planning Board, Planning Board (''Junta de Planificación'') for use by both private and public entities to evaluate, register, revitalize, develop or protect the built historic and cultural heritage of Puerto Rico in the context and for economic planning and land use zoning. There is an overlap between the Register of Historic Sites and Zones and the federal National Register of Historic Places listings in Puerto Rico, National Register of Historic Places (''Registro Nacional de Lugares Históricos''), however, properties can be listed in the former and not in the latter and vice versa. Properties inscribed in the register can be either individual sites or historic districts (''zonas históricas'') consisting of multiple structures, buildings, and sites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puerto Rico
; abbreviated PR), officially the Commonwealth of Puerto Rico, is a Government of Puerto Rico, self-governing Caribbean Geography of Puerto Rico, archipelago and island organized as an Territories of the United States, unincorporated territory of the United States under the designation of Commonwealth (U.S. insular area), commonwealth. Located about southeast of Miami, Miami, Florida between the Dominican Republic in the Greater Antilles and the United States Virgin Islands, U.S. Virgin Islands in the Lesser Antilles, it consists of the eponymous main island and numerous smaller islands, including Vieques, Puerto Rico, Vieques, Culebra, Puerto Rico, Culebra, and Isla de Mona, Mona. With approximately 3.2 million Puerto Ricans, residents, it is divided into Municipalities of Puerto Rico, 78 municipalities, of which the most populous is the Capital city, capital municipality of San Juan, Puerto Rico, San Juan, followed by those within the San Juan–Bayamón–Caguas metro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government, within the US Department of the Interior. The service manages all List of national parks of the United States, national parks; most National monument (United States), national monuments; and other natural, historical, and recreational properties, with various title designations. The United States Congress created the agency on August 25, 1916, through the National Park Service Organic Act. Its headquarters is in Washington, D.C., within the main headquarters of the Department of the Interior. The NPS employs about 20,000 people in units covering over in List of states and territories of the United States, all 50 states, the District of Columbia, and Territories of the United States, US territories. In 2019, the service had more than 279,000 volunteers. The agency is charged with preserving the ecological a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Deal
The New Deal was a series of wide-reaching economic, social, and political reforms enacted by President Franklin D. Roosevelt in the United States between 1933 and 1938, in response to the Great Depression in the United States, Great Depression, which had started in 1929. Roosevelt introduced the phrase upon accepting the Democratic Party (United States), Democratic Party's presidential nomination in 1932 before winning the election in a landslide over incumbent Herbert Hoover, whose administration was viewed by many as doing too little to help those affected. Roosevelt believed that the depression was caused by inherent market instability and too little demand per the Keynesian model of economics and that massive government intervention was necessary to stabilize and rationalize the economy. During First 100 days of the Franklin D. Roosevelt presidency, Roosevelt's first hundred days in office in 1933 until 1935, he introduced what historians refer to as the "First New Deal", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Governor Of Puerto Rico
The governor of Puerto Rico () is the head of government of the Commonwealth of Puerto Rico, an unincorporated territory of the United States. Elected to a 4 year-term through popular vote by the residents of the archipelago and island, the governor is the head of the executive branch of the government of Puerto Rico and the commander-in-chief of the Puerto Rico National Guard. Currently, Jenniffer González-Colón is serving as the 190th governor of Puerto Rico. The governor has a duty to enforce local laws, to convene the Legislative Assembly, the power to either approve or veto bills passed by the Legislative Assembly, to appoint government officers, to appoint justices, and to grant pardons. Since 1948, the governor has been elected by the people of Puerto Rico. Prior to that, the governor was appointed either by the king of Spain (1510–1898) or the president of the United States (1898–1948). Article IV of the Constitution of Puerto Rico ves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Río Grande De Loíza
The Rio Grande de Loíza (English language, English: ''Great River of Loíza'' or ''Loíza River'') is a river in the Geography of Puerto Rico, main island of Puerto Rico. It is the largest river in Puerto Rico by discharge volume. Situated on the north coast of the island, it originates in the northeastern Sierra de Cayey, flowing from south to north, and draining into the Atlantic Ocean, a few miles east of San Juan, Puerto Rico, San Juan. ''Rio Grande de Loíza'' runs for approximately . It has its origin in the municipality of San Lorenzo, Puerto Rico, San Lorenzo at an altitude of approximately above sea level. It runs through the municipalities of San Lorenzo, Caguas, Puerto Rico, Caguas, Gurabo, Puerto Rico, Gurabo, Trujillo Alto, Puerto Rico, Trujillo Alto, Carolina, Puerto Rico, Carolina, Canóvanas, Puerto Rico, Canóvanas and Loíza, Puerto Rico, Loíza, forming the Loíza Lake along its route, making it one of the longest rivers on the island. Geography The Rio Gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges On The National Register Of Historic Places In Puerto Rico
A road is a thoroughfare used primarily for movement of traffic. Roads differ from streets, whose primary use is local access. They also differ from stroads, which combine the features of streets and roads. Most modern roads are paved. The words "road" and "street" are commonly considered to be interchangeable, but the distinction is important in urban design. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically, many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1941
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge, dating from the 13th century BC, in the Peloponnese is one of the oldest arch bridges in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the word ''bridge' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Bridges In The United States
Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high elastic modulus, yield strength, fracture strength and low raw material cost, steel is one of the most commonly manufactured materials in the world. Steel is used in structures (as concrete reinforcing rods), in bridges, infrastructure, tools, ships, trains, cars, bicycles, machines, electrical appliances, furniture, and weapons. Iron is always the main element in steel, but other elements are used to produce various grades of steel demonstrating altered material, mechanical, and microstructural properties. Stainless steels, for example, typically contain 18% chromium and exhibit improved corrosion and oxidation resistance versus its carbon steel counterpart. Under atmospheric pressures, steels generally take on two crystalline forms: body-centered cubic and face-centered cubic, however depending on the thermal history and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
