|
Five Stone Arch Bridges, Hillsborough, New Hampshire
Five Stone Arch Bridges is a cluster of stone arch bridges in Hillsborough, New Hampshire, United States that have been designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers. History The stone arch bridges were built during the 19th century, when there was a need for sturdier construction to replace weaker wooden bridges. The design required exceptional skill by stonecutters. Each stone had to fit just right. At one time there were twelve stone arch bridges in Hillsborough. The designation of the five remaining structures as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers (ASCE) in 2002 had much to do with their close proximity to one another. Fred Rhyner, a member of the ASCE New Hampshire Section and a vice president at Haley & Aldrich Engineering in Manchester, filed the nomination application for the historic landmark. His interest in the remarkable cluster of stone arch bridges beg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second New Hampshire Turnpike Bridge
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of Units ( SI) is more precise:The second ..is defined by taking the fixed numerical value of the caesium frequency, Δ''ν''Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1. This current definition was adopted in 1967 when it became feasible to define the second based on fundamental properties of nature with caesium clocks. Because the speed of Earth's rotation varies and is slowing ever so slightly, a leap second is added at irregular intervals to civil time to keep clocks in sync with Earth's rotation. Uses Analog clocks and watches often have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manchester, New Hampshire
Manchester is a city in Hillsborough County, New Hampshire, United States. It is the most populous city in New Hampshire New Hampshire is a state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec to the nor .... At the 2020 census, the city had a population of 115,644. Manchester is, along with Nashua, one of two county seat, seats of New Hampshire's most populous county, Hillsborough County. Manchester lies near the northern end of the Northeast megalopolis and straddles the banks of the Merrimack River. It was first named by the merchant and inventor Samuel Blodgett, namesake of Samuel Blodget Park and Blodget Street in the city's North End. His vision was to create a great industrial center similar to that of the original Manchester in England, which was the world's first industrialized city. History The nativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In New Hampshire
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, 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 than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Historic Civil Engineering Landmarks
__NOTOC__ The following is a list of Historic Civil Engineering Landmarks as designated by the American Society of Civil Engineers since it began the program in 1964. The designation is granted to projects, structures, and sites in the United States (National Historic Civil Engineering Landmarks) and the rest of the world (International Historic Civil Engineering Landmarks). As of 2019, there are over 280 landmarks that have been approved by the ASCE Board of Direction. Sections or chapters of the American Society of Civil Engineers may also designate state or local landmarks within their areas; those landmarks are not listed here. See also *[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of New Hampshire Historical Markers (201–225)
This page is one of a series of pages that list New Hampshire historical markers. The text of each marker is provided within its entry. __NOTOC__ Markers 201 to 225 . Jonathan Chesley 1736–1826 :Town of Barnstead "This patriot and civic leader rests in a nearby grave on land he once farmed. In 1764 he contracted to build Barnstead's portion of the Province Road. On December 14-15, 1774 he participated in raids on the British Fort William and Mary in New Castle capturing needed munitions for the Patriot Militia at the Battle of Bunker Hill. During the Revolution he was an army quartermaster providing critical logistical support to feed, clothe and equip the Continental Army. Following the war, Chesley served as selectman, state representative and delegate to the 1784 state convention that ratified the U.S. Constitution." . The Enfield Shakers :Town of Enfield "Founded in 1793, Enfield Shaker Village was the 9th of the original Shaker communities established in the U.S. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contoocook River
The Contoocook River () is a river in New Hampshire. It flows from Contoocook Lake on the Jaffrey/ Rindge border to Penacook (just north of Concord), where it empties into the Merrimack River. It is one of only a few rivers in New Hampshire that flow in a predominantly northward direction. Four covered bridges span the river, one in the town of Henniker, one on the Hancock-Greenfield line, and two in the town of Hopkinton, New Hampshire with one being in the village of Contoocook, and the other in the populated place of West Hopkinton. Residents and tourists have made the Contoocook popular for fishing and whitewater boating. The name ''Contoocook'' came from the Pennacook tribe of Native Americans and perhaps means "place of the river near pines". Other variations of the name include the Abenaki meaning "nut trees river" or Natick language meaning "small plantation at the river." The river gives its name to Contoocook, New Hampshire, a census-designated place (CDP) withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Branch Contoocook River
The North Branch of the Contoocook River (officially the North Branch River) is a river in southwestern New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed. The North Branch begins in a highland region of lakes, swamps, and intricate stream networks in the town of Stoddard, New Hampshire. The U.S. Geographic Names Information System places the beginning of the North Branch at the outlet of Robb Reservoir in the southeast corner of Stoddard. Additional significant flow quickly arrives when the outlet of Highland Lake and Island Pond joins from the north. From here to Franklin Pierce Lake, the North Branch consists of a stairstep-like series of flatwater and wetland sections interspersed with sections of whitewater that are popular among New England kayakers. Below Franklin Pierce Lake it is a short distance to the Contoocook River in Hillsborough. Beards Brook enters the North Branch in Hillsborough just upstream ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beards Brook
Beards Brook or Beard Brook is a stream located in southern New Hampshire in the United States. It is a tributary of the North Branch of the Contoocook River, part of the Merrimack River watershed. Beards Brook begins at the outlet of Island Pond in the town of Washington, New Hampshire. The brook descends rapidly northeast to the village of East Washington, then turns south and enters Hillsborough. A significant tributary is Shedd Brook, entering from the west in Hillsborough. Beards Brook joins the North Branch of the Contoocook near Hillsborough village, just upstream of the Contoocook River. See also *List of rivers of New Hampshire This is a list of rivers and significant streams in the U.S. state of New Hampshire. All watercourses named "River" (freshwater or tidal) are listed here, as well as other streams which are either subject to thNew Hampshire Comprehensive Shoreland ... References Tributaries of the Merrimack River Rivers of New Hampshire Rivers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Coordinate System
The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in the EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values for the same location. History The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene, who composed his now-lost '' Geography'' at the Library of Alexandria in the 3rd centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Hampshire Department Of Transportation
The New Hampshire Department of Transportation (NHDOT) is a government agency of the U.S. state of New Hampshire. The Commissioner of NHDOT is Victoria Sheehan. The main office of the NHDOT is located in the J. O. Morton Building in Concord, New Hampshire, Concord. Functions NHDOT's general functions, as provided iNH RSA:21-L are: *Planning, developing, and maintaining a state transportation network which will provide for safe and convenient movement of people and goods throughout the state by means of a system of highways and railroads, air service, mass transit and other practicable modes of transportation in order to support state growth and economic development and promote the general welfare of the citizens of the state. *Developing and maintaining state owned land and buildings, except as otherwise provided by law, and cooperating with the New Hampshire New Hampshire Department of Administrative Services, Department of Administrative Services in preparing a long-range stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stone Arch
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. History Possibly the oldest existing arch bridge is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks, the Romans were – as with the vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor features 330 R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sawyer Bridge (Hillsborough, New Hampshire)
*A sawyer (occupation) is someone who saws wood. *Sawyer, a fallen tree stuck on the bottom of a river, where it constitutes a danger to boating. Places in the United States Communities *Sawyer, Kansas *Sawyer, Kentucky * Sawyer, Michigan * Sawyer, Minnesota *Sawyer, Nebraska *Sawyer, New York *Sawyer, North Dakota * Sawyer, Oklahoma * Sawyer, Washington *Sawyer County, Wisconsin Streams * Sawyer Kill, in New York *Sawyer River, in New Hampshire People * Sawyer (given name) * Sawyer (surname) Fictional characters *Annie Sawyer, one of the three main protagonists of the television series ''Being Human'' *Buz Sawyer, title character of a long-running comic strip *Tom Sawyer, Mark Twain's famous literary character in multiple books *James "Sawyer" Ford, a character on the ABC television show ''Lost'' *Peyton Sawyer, a fictional character on the hit television show ''One Tree Hill'' *Veronica Sawyer, the protagonist of the film and musical ''Heathers'' *Sawyer, recurring characte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
