A viaduct is a specific type of bridge that consists of a series of arches, piers or columns supporting a long elevated railway or road. Typically a viaduct connects two points of roughly equal elevation, allowing direct overpass across a wide valley, road, river, or other low-lying terrain features and obstacles. The term viaduct is derived from the Latin via meaning "road", and ducere meaning "to lead". It is a 19th-century derivation from an analogy with ancient Roman aqueducts. Like the Roman aqueducts, many early viaducts comprised a series of arches of roughly equal length.
The Frederick G. Gardiner Expressway, commonly known as the Gardiner Expressway or simply the Gardiner, is a partially at grade and elevated municipal expressway in Toronto, Ontario, Canada. Running close to the shore of Lake Ontario, it extends from the foot of the Don Valley Parkway (DVP) in the east, just past the mouth of the Don River, to the junction of Highway 427 and the Queen Elizabeth Way (QEW) in the west, for a total length of 18.0 kilometres (11.2 mi). East of Dufferin Street to just east of the Don River, the roadway is elevated for a length of 6.8 kilometres (4.2 mi), unofficially making it the longest bridge in Ontario. It runs above Lake Shore Boulevard east of Spadina Avenue.
The Steel Bridge is a through truss, double-deck vertical-lift bridge across the Willamette River in Portland, Oregon, United States, opened in 1912. Its lower deck carries railroad and bicycle/pedestrian traffic, while the upper deck carries road traffic, and light rail (MAX), making the bridge one of the most multimodal in the world. It is the only double-deck bridge with independent lifts in the world and the second oldest vertical-lift bridge in North America, after the nearby Hawthorne Bridge. The bridge links the Rose Quarter and Lloyd District in the east to Old Town Chinatown neighborhood in the west.
The Don Valley Parkway (DVP) is a municipal expressway in Toronto, Ontario, Canada, which connects the Gardiner Expressway in downtown Toronto with Highway 401. North of Highway 401, it continues as Highway 404. The parkway runs through the parklands of the Don River valley, after which it is named. It has a maximum speed limit of 90 km/h (56 mph) for its entire length of 15.0 km (9.3 mi). It is six lanes for most of its length, with eight lanes north of York Mills Road and four lanes south of Eastern Avenue. As a municipal road, it is patrolled by the Toronto Police Service.
The Prince Edward Viaduct System, commonly referred to as the Bloor Viaduct, is the name of a truss arch bridge system in Toronto, Ontario, Canada, connecting Bloor Street East, on the west side of the system, with Danforth Avenue on the east. The system includes the Rosedale Valley phase and the Sherbourne Phase, an embankment built to extend Bloor Street East to the Rosedale Ravine from Sherbourne Street. The Don Valley phase of the system, the most recognizable, spans the Don River Valley, crossing over the Bayview Avenue Extension, the Don River, and the Don Valley Parkway.
Queen Street is a major east-west thoroughfare in Toronto, Ontario, Canada. It extends from Roncesvalles Avenue and King Street in the west to Victoria Park Avenue in the east. Queen Street was the cartographic baseline for the original east-west avenues of Toronto's and York County's grid pattern of major roads. The western section of Queen is a centre for Canadian broadcasting, music, fashion, performance, and the visual arts. Over the past twenty-five years, Queen West has become an international arts centre and a tourist attraction in Toronto.
The Maurice J. Tobin Memorial Bridge is a cantilever truss bridge that spans more than two miles (3 km) from Boston to Chelsea over the Mystic River in Massachusetts. The bridge is the largest in New England. It is operated by the Massachusetts Department of Transportation and carries U.S. Route 1. It was built between 1948 and 1950 and opened to traffic on February 2, 1950, replacing the former Chelsea Bridge. The 36-foot (11 m)-wide roadway has three lanes of traffic on each of the two levels with northbound traffic on the lower level and southbound traffic on the upper level.
The Toronto Street Railway (TSR) was the operator of a horse-drawn streetcar system from 1861 to 1891 in Toronto, Ontario, Canada. Its successor, the Toronto Railway Company, inherited the horsecar system and electrified it between 1892 and 1894.
Dufferin Street is a major north–south street in Toronto, Vaughan and King, Ontario, Canada. It is a concession road, two concessions (4 km) west of Yonge Street. The street starts at Exhibition Place, continues north to Toronto's northern boundary at Steeles Avenue with some discontinuities and continues into Vaughan, where it becomes York Regional Road 53. The street is named for Frederick Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava, who served as Governor General of Canada from 1872 to 1878. Prior to 1878 the street was labelled as Western City Limits or Sideline Road south off Bloor. In 2003 and 2007, it was voted as one of "Ontario's Worst 20 Roads" in the Ontario's Worst Roads poll organized by the Canadian Automobile Association.
Hoggs Hollow Bridge, originally known as the Yonge Boulevard Viaduct, is a set of four separate highway bridges that span the West Branch of the Don River Valley in Toronto, Ontario, Canada, and carries 14 lanes of Highway 401. The four structures are the busiest multi-span bridge crossing in North America, surpassing the Brooklyn Bridge.
The Leaside Bridge, formerly the East York Leaside Viaduct, and officially commemorated as the Confederation Bridge, spans the Don River in the City of Toronto, Ontario. The Truss bridge carrying Millwood Road was built to connect the then Town of Leaside, including Thorncliffe Park, to the then Township of East York, and was completed on October 29, 1927. The construction time of only 10 months was record breaking at the time.
The Sir Isaac Brock Bridge is a steel Warren truss bridge in Toronto, Ontario, Canada. It lies along Bathurst Street over the railway tracks between Front Street and Fort York Boulevard. The bridge carries four lanes for motor vehicles with the centre lanes containing the streetcar tracks of the Toronto Transit Commission's 511 Bathurst streetcar route.
The Old Eastern Avenue Bridge consists of two bridges spanning the Don River in Toronto, Ontario, Canada. The north bridge or Gas Line Bridge is a concrete arch bridge built for Consumer's Gas Company and is used by Enbridge Gas to carry a major gas main. The southern Howe truss bridge, similar to Queen Street Viaduct and Sir Isaac Brock Bridge, previously carried traffic on Eastern Avenue but is currently unused.
The Toronto Belt Line Railway was built during the 1890s in Toronto, Ontario, Canada. It consisted of two commuter railway lines to promote and service new suburban neighbourhoods outside of the then city limits. Both lines were laid as loops. The longer Don Loop ran north of the city limits, while the shorter Humber Loop ran west of the city limits. The railway was never profitable and it only ran for two years. Today, as part of a rails-to-trails project, the Beltline Trail lies on the right-of-way of the Don Loop.
The Intercity Viaduct is an automobile and pedestrian crossing of the Kansas River in the United States. Designed by Waddell and Hedrick, this four lane, two level deck truss bridge opened to the public on January 29, 1907. It rises above the West Bottoms, and several sets of railroad tracks. It was the first roadway bridge to connect Kansas City, Missouri, with Kansas City, Kansas, non-stop all the way across. It is about 1.5 miles (2.4 km) long and carries eastbound traffic for Interstate 70 (I-70)/U.S. Route 24 (US 24)/US 40/US 169, while its sister bridge, the Lewis and Clark Viaduct, built in 1962, carries westbound traffic.
Dundas Street is a major historic arterial road in Ontario, Canada. The road connects the city of Toronto with its western suburbs and several cities in southwestern Ontario. Three provincial highways—2, 5, and 99—followed long sections of its course, although these highway segments have since been downloaded to the municipalities they passed through. Originally intended as a military route to connect the shipping port of York to the envisioned future capital of London, Ontario, the street today connects Toronto landmarks such as Yonge–Dundas Square and the city's principal Chinatown to rural villages and the regional centres of Hamilton and London.
