The Big Hill on the Canadian Pacific Railway main line in British Columbia, Canada, was the most difficult piece of railway track on the Canadian Pacific Railway's route. [1] It was situated in the rugged Canadian Rockies west of the Continental Divide of the Americas and Kicking Horse Pass. Even though the Big Hill was replaced by the Spiral Tunnels in 1909, the area has long been a challenge to the operation of trains and remains so to this day. [2]
To complete the Pacific railway as quickly as possible, a decision was made to delay blasting a lengthy 1,400-foot (430 m) tunnel through Mount Stephen and instead build a temporary 8-mile (13 km) line over it. Instead of the desired 2.2% grade (116 feet to the mile) a steep 4.5% (some sources say 4.4%) grade was built in 1884. [3] This was one of the steepest adhesion railway lines anywhere. (4.5% = 1 in 22.22). It descended from Wapta Lake to the base of Mount Stephen, along the Kicking Horse River to a point just west of Field, then rose again to meet the original route.
Seen as a temporary solution, this grade was twice the percentage normally allowed for a downhill track. The first construction train to go down the pass ran away off the hill to land in the Kicking Horse River, killing three. [4] [5] The CPR soon added three safety switches (runaways) on the way down to protect against runaway trains. The switches led to short spurs with a sharp reverse upgrade and they were kept in the uphill position until the operator was satisfied that the train descending the grade towards him was not out of control. Speed was restricted to 8 miles per hour (13 km/h) for passenger trains and 6 miles per hour (9.7 km/h) for freight, and elaborate brake testing was required of trains prior to descending the hill. Nevertheless, disasters occurred with dismaying frequency.
Field was created as a work camp solely to accommodate the CPR's need for additional locomotives to be added to trains about to tackle the Big Hill. Here a stone roundhouse with turntable was built at what was first known simply as Third Siding. In December 1884 the CPR renamed it Field after C.W. Field, a Chicago businessman who, the company hoped, might invest in the region after he had visited on a special train they had provided for him.
At that time, standard steam locomotives were 4-4-0s, capable enough for the prairies and elsewhere, but of little use on the Big Hill. Baldwin Locomotive Works was called upon to build two 2-8-0s for use as Field Hill pusher engines in 1884. At the time they were the most powerful locomotives built. Two more followed in June 1886. The CPR began building its own 2-8-0s in August 1887, and over the years hundreds more were built or bought.
The Big Hill "temporary" line remained the main line for 25 years until the spiral tunnels were opened on September 1, 1909.
The improvement project was started in 1906, under the supervision of John Edward Schwitzer, the senior engineer of CPR's western lines. The first proposal had been to extend the length of the climb, and thus reduce the gradient, by bypassing the town of Field at a higher level, on the south side of the Kicking Horse river valley. This idea had quickly been abandoned because of the severe risk of avalanches and landslips on the valley side. Also under consideration was the extension of the route in a horseshoe loop northwards, using both sides of the valley of the Yoho River to increase the distance, but again the valley sides were found to be prone to avalanches. It was the experience of severe disruption and delay caused by avalanches on other parts of the line (such as at the Rogers Pass station, which was destroyed by an avalanche in 1899) that persuaded Schwitzer that digging spiral tunnels was the only practical but expensive way forward.
The route decided upon called for two tunnels driven in three-quarter circles into the valley walls. The higher tunnel, "number one", is about 1,000 yards (0.91 km) in length and runs under Cathedral Mountain, to the south of the original track. When the new line emerges from this tunnel it has doubled back, running beneath itself and 50 feet (15 m) lower. It then descends the valley side in almost the opposite direction to its previous course before crossing the Kicking Horse River and entering Mount Ogden to the north. This lower tunnel, "number two", is a few yards shorter than "number one" and the descent is again about 50 feet. From the exit of this tunnel the line continues down the valley in the original direction, towards Field. The constructions and extra track effectively double the length of the climb and reduce the ruling gradient to 2.2%. The new distance between Field and Wapta Lake, where the track levels out, is 11+1⁄2 miles (18.5 km). [6]
The contract was awarded to the Vancouver engineering firm of MacDonnell, Gzowski and Company and work started in 1907. The labour force amounted to about 1000 and the cost was about $1.5 million.
Regardless of the opening of the spiral tunnels, Field Hill remained a significant challenge and it was necessary to retain the powerful locomotives at Field locomotive depot. [6] Even after the introduction of modern locomotives with dynamic braking and continuous pneumatic brakes, accidents were not eliminated. [7] There were 64 derailments between Calgary and Field between 2004 and 2019. [8]
On February 4, 2019, two of the three locomotives and 99 grain hopper railcars of westbound Canadian Pacific train 301 derailed at Mile 130.6, just outside of the western portal of Upper Spiral Tunnel. The three crew members were killed in the accident. [8]
The Canadian Pacific Railway, also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), was a Canadian Class I railway incorporated in 1881. The railway was owned by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001.
Yoho National Park is a national park of Canada. It is located within the Rocky Mountains along the western slope of the Continental Divide of the Americas in southeastern British Columbia, bordered by Kootenay National Park to the south and Banff National Park to the east in Alberta. The word Yoho is a Cree expression of amazement or awe, and it is an apt description for the park's spectacular landscape of massive ice fields and mountain peaks, which rank among the highest in the Canadian Rockies.
The Canadian National Railway Company is a Canadian Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern and Southern United States.
The Kettle Valley Railway was a subsidiary of the Canadian Pacific Railway (CPR) that operated across southern British Columbia, west of Midway running to Rock Creek, then north to Myra Canyon, down to Penticton over to Princeton, Coalmont, Brookmere, Coquihalla and finally Hope where it connected to the main CPR line.
BC Rail is a railway in the Canadian province of British Columbia.
The Selkirk locomotives were 36 steam locomotives of the 2-10-4 wheel arrangement built for Canadian Pacific Railway by Montreal Locomotive Works, Montreal in Quebec, Canada.
Rogers Pass is a high mountain pass through the Selkirk Mountains of British Columbia, but the term also includes the approaches used by the Canadian Pacific Railway (CP) and the Trans-Canada Highway. In the heart of Glacier National Park, this tourism destination since 1886 is a National Historic Site.
Field Hill is a steep portion of the mainline of the Canadian Pacific Railway located near Field, British Columbia. Field was created solely to accommodate the Canadian Pacific Railway's need for additional locomotives to be added to trains about to tackle both Field Hill, and the Big Hill. Here a stone roundhouse with turntable was built at what was first known simply as Third Siding. In December 1884 the CPR renamed it Field after Cyrus W. Field, a Chicago businessman who had visited recently on a special train.
The Connaught Tunnel is in southeastern British Columbia, on the Revelstoke–Donald segment. The 5.022-mile (8.082 km) tunnel carries the Canadian Pacific Railway (CP) main line under Mount Macdonald in the Selkirk Mountains, replacing the previous routing over Rogers Pass.
The Kicking Horse River is in the Canadian Rockies of southeastern British Columbia, Canada. The river was named in 1858, when James Hector, a member of the Palliser Expedition, reported being kicked by his packhorse while exploring the river. Hector named the river and the associated pass as a result of the incident. The Kicking Horse Pass, which connects through the Rockies to the valley of the Bow River, was the route through the mountains subsequently taken by the Canadian Pacific Railway when it was constructed during the 1880s. The railway's Big Hill and associated Spiral Tunnels are in the Kicking Horse valley and were necessitated by the steep rate of descent of the river and its valley.
Kicking Horse Pass is a high mountain pass across the Continental Divide of the Americas of the Canadian Rockies on the Alberta–British Columbia border, and lying within Yoho and Banff national parks. Divide Creek forks onto both sides of the Continental Divide.
The term ruling grade is usually used as a synonym for "steepest climb" between two points on a railroad. More simply, the steepest grade to be climbed dictates how powerful the motive power must be in order for the run to be made without assistance. Even if 99% of the line could be run with a low-powered locomotive, if at some point on the line there is a steeper gradient than such train would be able to climb, this gradient "rules" that a more powerful locomotive must be used, in spite of it being far too powerful for the rest of the line. This is why special "helper engines" are often stationed near steep grades on otherwise mild tracks. It is cheaper than running a too-powerful locomotive over the entire track mileage just in order to make the grade, especially when multiple trains run over the line each day.
The Spanish River derailment was a rail transport accident that occurred on 21 January 1910, on the Canadian Pacific Railway (CPR) Webbwood Subdivision, where the railway crosses the Spanish River near the settlement of Nairn near Sudbury, Ontario, Canada. A westbound passenger express train derailed and crashed into the Spanish River bridge, killing at least 43 passengers, though the death count varies. The cause was never established, but was believed to be poor track condition and/or speeding and braking on a curve.
The Huron Central Railway is a railway operating in northern Ontario, Canada. It is operated by Genesee & Wyoming Canada, the Canadian subsidiary of Genesee & Wyoming.
The 1910 Rogers Pass Avalanche killed 58 men clearing a railroad line just outside of Revelstoke in Rogers Pass through the Selkirk Mountains in British Columbia on March 4, 1910. It is Canada's worst avalanche disaster.
John Edward Schwitzer was assistant chief engineer for the Canadian Pacific Railway in the early 1900s. He was known for two major projects on the CPR, both that removed costly bottlenecks on the routes.
Mount Ogden is a mountain in the Canadian Rockies of British Columbia, Canada.
Coordinates: 51°26′10″N116°24′13″W / 51.435976°N 116.403653°W