The next important cantilever was built by American engineer C. Shaler Smith, ten years later in 1877. It provided the first practical test of the application of the cantilever principle to long-span bridge design. He built what was then the world's longest cantilever for the Cincinnati Southern Railway over a 366 m wide and 84 m deep gorge of the Kentucky River near Dixville, Kentucky.
Other important counterbalanced spans are the Michigan Central Railroad bridge over the Niagara Gorge (this bridge), designed by Charles Conrad Schneider/Apolda in 1883. With cantilever arms supporting a simple suspended truss, this 151 m span and, the nearly identical Fraser River Bridge in British Columbia, Canada, directed the attention of the engineering world to this new bridge form. These two were the prototypes for subsequent cantilevers, the Poughkeepsie Bridge over the Hudson River in New York, Young's High Bridge over the Kentucky River, the Forth Bridge in Scotland, and the Quebec Bridge in Canada.
Construction history
Niagara Cantilever Bridge viewed from the south, with a train passing over it. Whirlpool Rapids Bridge is just behind it.
Construction view showing traveling crane and shoreside falseworkThe bridge in 1892Both bridges in 1901
The Michigan Central Railway Bridge was the dream of financier and railway developer[lower-roman 3]Cornelius Vanderbilt.[lower-roman 4] Vanderbilt needed a rail link between Canada and the USA, but was not prepared to pay the high rental price which the owners of the Lower Arch Bridge (the first railway bridge across the gorge) were asking.
Mr. Vanderbilt owned the Michigan Central Railway and had controlling interest in the Canada Southern Railway. In lieu of paying rent, he decided to build a new bridge. Vanderbilt formed the Niagara River Bridge Company and received a charter to build a new bridge from both the Canadian and US authorities.
On April 9, 1883, the Niagara River Bridge Company signed a contract with the Central Bridge Works Company of Buffalo New York to build this bridge. The chief engineer was Charles C. Schneider. This first bridge of cantilever design at Niagara, was built across the Niagara Gorge by engineer Edmund Hayes, of the Central Bridge Works Company, at a site just south of the Lower Arch Bridge. (the Whirlpool Bridge)
Construction of this bridge began on April 15, 1883. The contractors were working against a deadline of November 1. Every day afterwards, the contractor had to pay a penalty of $500 per day. The 40.3 meter (132.6ft) high towers were completed on October 11. The contractor soon realized that it would not be possible to complete the bridge and railway tracks by November 1. They anticipated they could put 25 foot (7.6 m) sections onto each side of the bridge every two days and connect the center span in five days.
Each cantilever measuring 99 meters (325ft) long and 7.9 meters (26ft) high where they were anchored were in place by November 18. Two 7.5 meter (25ft) long sections were attached and extended from each cantilever. The center span was measured and sent to the company's Buffalo, New York plant for fabrication. Each end was made of a section constructed of steel extending from each shoreline nearly half way across the gorge. Each section was supported near its center by a steel tower from which extended two lever arms, one reaching the shore while the other extended over the river 175 feet (53 m) beyond the towers. By the outer arm having no support and being subjected the same as the shore arm to the weight of the trains, a counter advantage is given to the shore arm being firmly anchored to the rock on shore. The towers on each side rose from the water level below. The bridge span was 495 feet (151 m). The ends of the cantilevers extended 395 feet (120 m) from the abutments leaving a gap of 120 feet (37 m) which was filled by an ordinary truss type bridge hung form the ends of the cantilever.
Provisions had been built into this bridge to allow for expansion and contraction, allowing the ends to move freely as the temperature changed. The total length of the bridge was 906 feet (276 m). It had a double track and had the capacity to bear the weight of two trains crossing at the same time producing a side pressure equal to a 75-mile per hour (120km/h) wind. The railway was 240 feet (73 m) above the Niagara River.
On November 21, media reports indicated that the bridge had been completed, linking Canada and the USA together. On December 1, 1883, the bridge was officially completed. The bridge had cost $700,000 US dollars. On December 6, 1883 at 11:41a.m., the first crossing of this new bridge was made. It consisted of an engine pulling a tender and passenger car. The passenger car carried a number of dignitaries including railway Superintendent G. H. Burrows.
Schneider's bridge had a useful life of over 40 years during a period when rolling stock on the railroads grew much heavier. The speed of erection of a new style bridge coupled with its performance made it one of the most innovative and significant bridges built in the world up to that time.
List of bridges across the Niagara River
The Niagara River saw the following crossings in the 19th century (in chronological order):
↑ The Cantilever bridge, if built with pinned joints, is statically determinant, which makes it easier to calculate the stresses and size the parts of the structure. Individual bridge components (members) do not suffer the inherent deficiency of the statically indeterminante continuous beam or girder. These develop unknown, possibly large internal stresses which could lead to failure should one of the piers or abutments subside. Unstable soil conditions plagued foundation, pier, and abutment design, especially prior to the 20th century, so the ability of a bridge's superstructure to adjust should one of the piers or abutments sink was a significant design breakthrough.
1 2 3 Illustration from "A New Guide To Niagara Falls And Vicinity, Giving A Full And Complete Description of Niagara Falls, Suspension Bridge, Buffalo, Rochester, Ontario Beach, Toronto, Lockport, Tonawanda, Lewiston, Niagara-On-The-Lake, Chautauqua, And Other Places Of Interest. By Rand, McNally & Company, Publishers., (no date provided, possibly 1895) pp.82–86 as found at the library collection of Niagara University.
Niagara Falls is a group of three waterfalls at the southern end of Niagara Gorge, spanning the border between the province of Ontario in Canada and the state of New York in the United States. The largest of the three is Horseshoe Falls, which straddles the international border of the two countries. It is also known as the Canadian Falls. The smaller American Falls and Bridal Veil Falls lie within the United States. Bridal Veil Falls is separated from Horseshoe Falls by Goat Island and from American Falls by Luna Island, with both islands situated in New York.
The Lewiston–Queenston Bridge, also known as the Queenston–Lewiston Bridge, is an arch bridge that crosses the Niagara River gorge just south of the Niagara Escarpment. The bridge was officially opened on November 1, 1962. It is an international bridge between the United States and Canada. It connects Interstate 190 in the town of Lewiston, New York to Highway 405 in the community of Queenston, Ontario. The Lewiston–Queenston Bridge is a twin of the Rainbow Bridge at Niagara Falls and designed by Richard Lee.
The Whirlpool Rapids Bridge, commonly known as the Whirlpool Bridge or the Lower Steel Arch Bridge, is a spandrel braced, riveted, two-hinged arch bridge that crosses the international border between Canada and the United States, connecting the commercial downtown districts of Niagara Falls, Ontario and Niagara Falls, New York. This bridge is located approximately 1.5 kilometres (0.9 mi) north of the Rainbow Bridge and about 2 kilometres (1.2 mi) from the Falls. It was acquired by the Niagara Falls Bridge Commission in January 1959. Immediately upstream is the similar arch-style Michigan Central Railway Bridge, which has been out of service since 2001.
The Peace Bridge is an international bridge between Canada and the United States at the east end of Lake Erie at the source of the Niagara River, about 20 kilometres (12.4 mi) upriver of Niagara Falls. It connects Buffalo, New York, in the United States to Fort Erie, Ontario, in Canada. It is operated and maintained by the binational Buffalo and Fort Erie Public Bridge Authority.
The Whirlpool Aero Car or Spanish Aero Car is a cable car located in Niagara Falls, Ontario that transports passengers over a section of the Niagara River referred to as the Niagara Whirlpool. The system was designed by Spanish engineer Leonardo Torres Quevedo and has been upgraded several times since 1916. The system uses one car that carries 35 standing passengers over a one-kilometre trip.
The Niagara Falls International Rainbow Bridge, commonly known as the Rainbow Bridge, is an arch bridge across the Niagara River gorge. It connects the cities of Niagara Falls, New York, United States, and Niagara Falls, Ontario, Canada (west).
A cantilever bridge is a bridge built using structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete.
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 becauses it uses materials efficiently.
The Michigan Central Railroad was originally chartered in 1832 to establish rail service between Detroit, Michigan, and St. Joseph, Michigan. The railroad later operated in the states of Michigan, Indiana, and Illinois in the United States and the province of Ontario in Canada. After about 1867 the railroad was controlled by the New York Central Railroad, which later became part of Penn Central and then Conrail. After the 1998 Conrail breakup, Norfolk Southern Railway now owns much of the former Michigan Central trackage.
The Niagara Falls Suspension Bridge stood from 1855 to 1877 across the Niagara River and was the world's first working railway suspension bridge. It spanned 825 feet (251 m) and stood 2.5 miles (4.0 km) downstream of Niagara Falls, where it connected Niagara Falls, Ontario to Niagara Falls, New York. Trains used the upper of its two decks, while pedestrians and carriages used the lower. The bridge was the idea of Canadian politicians, and it was built by an American company and a Canadian company. It was most commonly called the Suspension Bridge, although other names included Niagara Railway Suspension Bridge, Niagara Suspension Bridge, and its official American name of the International Suspension Bridge.
The Runcorn Railway Bridge, Ethelfleda Bridge or Britannia Bridge crosses the River Mersey at Runcorn Gap between Runcorn and Widnes in Cheshire, England. It is alongside the Silver Jubilee Bridge. The bridge is recorded in the National Heritage List for England as a Grade II* Listed building.
The Great Gorge Route or Niagara Belt Line was an interurban trolley belt line encompassing the Niagara Gorge, operated by the International Railway and Niagara Gorge Railroad. Many dignitaries rode this line and they used to use a flat car with search light to illuminate the Niagara Whirlpool at night.
The Michigan Central Railway Bridge is an out-of-service steel Deck arch bridge spanning the Niagara Gorge between Niagara Falls, Ontario and Niagara Falls, New York. The bridge is owned by Canadian Pacific Kansas City, which purchased the single track structure in 1990. The Canadian corridor and bridge are owned by the City of Niagara Falls, Ontario. The bridge is located just upstream from the older arch-style Whirlpool Rapids Bridge used by Maple Leaf Amtrak passenger trains.
A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch(es) support. The arch(es) have strengthened chord(s) that run to a strong part of the deck structure or to independent tie-rods below the arch ends.
The Niagara Gorge Railroad was an interurban railway which ran at the bottom of the Niagara Gorge from Niagara Falls, New York to Lewiston, New York.
The Upper Steel Arch Bridge, also known as the Honeymoon Bridge or Fallsview Bridge, was an international bridge which crossed the Niagara River, connecting Niagara Falls, Ontario, Canada, with Niagara Falls, New York, United States. It was located about 500 feet (150 m) upriver of the present-day Rainbow Bridge. It collapsed in 1938.
Charles Conrad Schneider, often referred to as C. C. Schneider, was an American civil engineer and bridge designer. Schneider was also a member and president of the American Society of Civil Engineers.
The Cisco Bridges are a pair of railroad bridges at Siska near Lytton, British Columbia, Canada. The Canadian Pacific Railway and Canadian National Railway both follow the route of the Fraser River, one on each side, and the routes exchange sides at this point. The easier CPR route was laid first; when the CNR arrived later they needed to follow the more difficult route. The area is popular with railfans due to the proximity of the two bridges, and the easy access to the area is parallel to both bridges down the east bank of the river. Directional running in the Fraser Canyon means that both CPR and CNR trains may be seen on both bridges. Although this area is generally known as Cisco, the actual CN timetable station point of Cisco is approximately 4.0 km (2.5 mi) to the east of the bridges.
The Quechee Gorge Bridge is a historic bridge, carrying U.S. Route 4 (US 4) across Quechee Gorge, near the Quechee village of Hartford, Vermont. Built in 1911, it is Vermont's oldest surviving steel arch bridge. It was listed on the National Register of Historic Places in 1990.
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