|
Captain William Moore Bridge
The Captain William Moore Bridge is an historic asymmetric single-pylon cable-stayed bridge on the Klondike Highway that spans the Moore Creek Gorge in the borough of Skagway, Alaska, United States, about north of the city of Skagway. Before the bridge was built in 1976, Whitehorse, Yukon, was only accessible from Skagway by the White Pass and Yukon Route railroad. The bridge connects Skagway to the Yukon highway network and allows traffic to pass over the Moore Creek Gorge, which flows along a fault line. To minimize bridge damage from earthquake movements along the fault line, the bridge was designed with anchors only at one end, which in this case was the south bank. Over the decades, heavy ore truck traffic weakened the bridge. In 2019 a replacement buried bridge located 150 feet west of the historic bridge was opened, and the 1976 cable-stayed bridge was repurposed as a pedestrian viewpoint and wayside historic attraction. Design Designed in 1974 by the engineers in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cantilever Spar Cable-stayed Bridge
A cantilever spar cable-stayed bridge is a modern variation of the cable-stayed bridge. This design has been pioneered by the structural engineer Santiago Calatrava in 1992 with the Puente del Alamillo in Seville, Spain. In two of his designs the force distribution does not depend solely upon the cantilever action of the spar (pylon); the angle of the spar away from the bridge and the weight distribution in the spar serve to reduce the overturning forces applied to the footing of the spar. In contrast, in his swinging Puente de la Mujer design (2002), the spar reaches toward the cable supported deck and is counterbalanced by a structural tail. In the Assut de l'Or Bridge (2008), the curved backward pylon is back-stayed to concrete counterweights. Of this type by Santiago Calatrava *Puente del Alamillo, Seville, Spain, 1992 (backward cantilever) * Trinity Bridge, Manchester, United Kingdom, 1995 (backward cantilever) *Puente de la Mujer, Buenos Aires, Argentina, 2002 (forwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable-stayed Bridge
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly. Cable-stayed bridges were being designed and constructed by the late 16th century, and the form found wide use in the late 19th century. Early examples, including the Brooklyn Bridge, often combined features from both the cable-stayed and suspension designs. Cable-stayed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klondike Highway
The Klondike Highway is a highway that runs from the Alaska Panhandle through the province of British Columbia and the territory of Yukon in Canada, linking the coastal town of Skagway, Alaska, to Dawson City, Yukon. Its route somewhat parallels the route used by prospectors in the 1898 Klondike Gold Rush. In both British Columbia and Yukon, the highway is marked as Yukon Highway 2. In Alaska, the Highway is marked as Alaska Route 98 (as in "route of 1898"). Until 1978, the unopened section between the Yukon–BC border and Carcross had no official highway number, while the section north of Carcross to the Alaska Highway was Highway 5, and the section from Stewart Crossing to Dawson was Highway 3. The BC section is now maintained by the Yukon government as a natural extension of Highway 2. Route description The Klondike Highway winds in the state of Alaska for , up through the White Pass in the Coast Mountains where it crosses the Canada–U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skagway, Alaska
The Municipality and Borough of Skagway is a first-class borough in Alaska on the Alaska Panhandle. As of the 2020 census, the population was 1,240, up from 968 in 2010. The population doubles in the summer tourist season in order to deal with more than 1,000,000 visitors each year. Incorporated as a borough on June 25, 2007, it was previously a city (urban Skagway located at ) in the Skagway-Yakutat-Angoon Census Area (now the Hoonah–Angoon Census Area, Alaska).June 5, 2008, election, Skaguay News, summer edition, 2008. Page 17. The most populated community is the census-designated place of Skagway. The port of Skagway is a popular stop for cruise ships, and the tourist trade is a big part of the business of Skagway. The White Pass and Yukon Route narrow gauge railroad, part of the area's mining past, is now in operation purely for the tourist trade and runs throughout the summer months. Skagway is also part of the setting for Jack London's book ''The Call of the Wild'', W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitehorse, Yukon
Whitehorse () is the capital of Yukon, and the largest city in Northern Canada. It was incorporated in 1950 and is located at kilometre 1426 (Historic Mile 918) on the Alaska Highway in southern Yukon. Whitehorse's downtown and Riverdale areas occupy both shores of the Yukon River, which rises in British Columbia and meets the Bering Sea in Alaska. The city was named after the White Horse Rapids for their resemblance to the mane of a white horse, near Miles Canyon, before the river was dammed. Because of the city's location in the Whitehorse valley and relative proximity to the Pacific Ocean, the climate is milder than comparable northern communities such as Yellowknife. At this latitude, winter days are short and summer days have up to about 19 hours of daylight. Whitehorse, as reported by ''Guinness World Records'', is the city with the least air pollution in the world. As of the 2021 Canadian census, the population was 28,201 within city boundaries and 31,913 in the cens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Pass And Yukon Route
The White Pass and Yukon Route (WP&Y, WP&YR) is a Canadian and U.S. Class III narrow-gauge railroad linking the port of Skagway, Alaska, with Whitehorse, the capital of Yukon. An isolated system, it has no direct connection to any other railroad. Equipment, freight and passengers are ferried by ship through the Port of Skagway, and via road through a few of the stops along its route. The railroad began construction in 1898 during the Klondike Gold Rush as a means of reaching the goldfields. With its completion in 1900, it became the primary route to the interior of the Yukon, supplanting the Chilkoot Trail and other routes. The route continued operation until 1982, and in 1988 was partially revived as a heritage railway. In July 2018, the railway was purchased by Carnival Corporation & plc. For many years the railroad was a subsidiary of Tri White Corporation, also the parent of Clublink, and operated by the Pacific and Arctic Railway and Navigation Company (in Alaska), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault Line
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John O'Connell Bridge
The John O'Connell Bridge is a cable-stayed bridge over the Sitka Channel located in Sitka, Alaska. The bridge connects the town of Sitka on Baranof Island to the airport and Coast Guard Station on Japonski Island. Until the bridge was completed in 1971, the commute was only achievable through a ferry service. The bridge is named after John W. O'Connell, a former mayor of Sitka. The two-lane bridge is in total length, with a main span of . The bridge was also the United States' first vehicular cable-stayed girder spanned bridge. The four steel pylons carry two three-cable sets, each carrying a section of the bridge deck. Special consideration was given to the bridge's aesthetics due to its proximity to nearby Castle Hill. Approximately 4000 vehicles cross the bridge every day, up from the approximate 1000 shore boat passengers per day prior to the bridge's completion. A man from Bellingham, Washington, died in August 2015 after jumping off the bridge to swim ashore. The bridg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In The Municipality Of Skagway Borough, Alaska
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In Alaska
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", which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable-stayed Bridges In The United States
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly. Cable-stayed bridges were being designed and constructed by the late 16th century, and the form found wide use in the late 19th century. Early examples, including the Brooklyn Bridge, often combined features from both the cable-stayed and suspension designs. Cable-stayed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpeg "Click for more on -> Skagway, Alaska")
.jpeg "Click for more on -> Whitehorse, Yukon")
.jpeg "Click for more on -> White Pass And Yukon Route")
