and the Trans-Canada Highway was held on September 17, 1960, near Wawa.
Beginnings With the establishment of the provincial highway network on February 26, 1920, the Department of Public Highways, predecessor to today's
Ministry of Transportation of Ontario, sought to establish a network of reliable roads through the southern part of the province. Through July and August 1920, a highway east of Ottawa to Pointe-Fortune at the Quebec boundary, known as the Montreal Road, was assumed by the department. This original routing of Highway 17 followed what is now Montreal Road, St Joseph Boulevard, and the Old Montreal Road eastward out of Ottawa; Laurier Street through Rockland; Regional Road 55 and 26 between Clarence and Plantagenet; Blue Corner Road and Bay Road (Regional Road 4) to L'Original; John Street, Pharand Street, Eliza Street, and Main Street to Hawkesbury; Front Road along the shore of the Ottawa River from Hawkesbury to Chute-a-Blondeau and Des Outaouais Road just west of and
Pointe-Fortune, and Regional Road 17 elsewhere. A portion of this original highway was lost when the completion of the
Carillon Generating Station in 1964 raised the water level of the Ottawa River north of
Voyageur Provincial Park. West of Ottawa, a route was assumed to Arnprior on October 6, following today's Carling Avenue, March Road and Donald B. Munro Drive between Ottawa and Kinburn, and Kinburn Side Road and Madawaska Boulevard between Kinburn and Arnprior. On June 15, 1921, the highway was extended to Pembroke via Renfrew, Cobden, and Beachburg. The entire route between Pembroke and Pointe-Fortune became known as Highway 17 in the summer of 1925. Although the jurisdiction of the soon-to-become Department of Highways did not extend beyond Pembroke, a rough trail continued to North Bay, and a trunk road constructed by the Department of Northern Development beyond there to Sault Ste. Marie by 1923, roughly following the route of Highway 17 today. The Pembroke and Mattawan Road Colonization Road or Great Northern Road was constructed between 1853 and 1874 to encourage settlement in the Upper Ottawa Valley. Between Mattawa and North Bay, many aboriginals and early settlers made use of the Mattawa River, the headwaters of which lie just north of Lake Nipissing. From there they would travel down the French River into Georgian Bay and onwards to Lake Superior. Highway 17 between Mattawa and Sault Ste. Marie roughly traces this early
voyageur route.
Northern development and the Lakehead Following World War I, discussions of a cross-continental road through Canada became vocal and construction of such a route was underway in several places. However, funding for this work was soon halted as the government distributed funding to projects that were believed to be more important than the luxury of the new road. The most significant accomplishment of this work was the Nipigon Highway between Thunder Bay and Nipigon, opened in 1924. With the signing of the
Department of Northern Development (DND) Act in 1926, construction resumed on improving many northern roads; the
Ferguson Highway was the main project to begin as a result of the act. The onset of the
Great Depression would result in federally funded relief projects being signed with provinces in late 1930. Thousands of men were hired to construct highways in remote areas of the province from temporary camps, and work underway on the new link between Thunder Bay and Winnipeg that would roughly parallel the
Canadian Pacific Railway. The first section to open was between the Manitoba town of
Whitemouth and Kenora. On July 1, 1932, (
Dominion Day), an inter-provincial ceremony was held in Kenora to dedicate the new route. The next link would connect the road through the Kenora with the rough road connecting
Vermilion Bay, Dryden and
Dyment. This section opened in early 1933. However, it would require another year of rock blasting and construction to make the route navigable by vehicles. On July 1, 1935, a multi-day motorcade celebration was held to officially open the new highway. A convoy of vehicles travelled from Thunder Bay to Winnipeg along the route, resting overnight in Kenora before completing the two-day journey. By the end of 1935, numerous factors combined which resulted in the termination of the highway camps. The federal government of R. B. Bennett used
Section 98 of the Criminal Code in 1931 to arrest several leaders of the
Communist Party of Canada. However, the lack of evidence and protests would eventually lead to the early release of the men, much to the embarrassment of the government. The men, with public support behind them, headed north to highway camps, where mounting tensions due to low wages, poor conditions, lacklustre food, isolation, and military-like discipline resulted in organized labour strikes. Funding was pulled from the Trans-Canada Highway in 1936. On April 1, 1937, the DND was absorbed into the Department of Highways, and the road west of Pembroke became an extension of Highway 17. At this point, the highway from Sault Ste. Marie to the Quebec boundary was long. Portions were paved at this point: east of Sault Ste. Marie, west of Blind River, through Sudbury, east of Sturgeon Falls, through Mattawa, and from Chalk River to Quebec; the remainder was a
gravel road. The highway between the Manitoba boundary and Nipigon was , mostly gravel-surfaced. The only significant exceptions were in the Kenora and Thunder Bay areas. Before the outbreak of
World War II in 1939, a
new bridge spanning the
Nipigon River was completed alongside a highway eastward to
Schreiber. Both were opened together ceremoniously on September 24, 1937. When the war began, construction on Highway 17 halted,
The Gap Following the war, construction on the missing segment of Highway 17 between Schreiber and Sault Ste. Marie proceeded slowly; the completion of Highway 11 between Nipigon and Hearst already provided a road between the east and west. However, in 1949 the federal government signed the
Trans-Canada Highway Act, which provided up to a 90% subsidy to provinces to complete their portion of the highway to the required standards. Two portions of Ontario's route were eligible for this subsidy: Highway 69 between Parry Sound and Sudbury, and Highway 17 along the north shore of Lake Superior. Amongst some of the most difficult terrain encountered in Canada, engineers blasted 2,087,234 cubic metres (2,730,000 cubic yards) of rock, removed 5,982,641 cubic metres (7,825,000 cubic yards) of earth, and cleared of forest in order to bridge the of wilderness known as "the Gap". The Gap was completed and opened to traffic on September 17, 1960, uniting the two segments and completing the route of Highway 17 from the Manitoba border to the Quebec border.
The Queensway During the 1950s, the
Greber Plan called for the creation of numerous parkways and divided highways through the growing city of Ottawa. One of these, known as
The Queensway, was a grade-separated freeway that would bypass the urban alignment of Highway 17. The
Greber Plan was produced by
Jacques Gréber under the direction of Prime Minister
William Lyon Mackenzie King in the late 1940s. Although Gréber had been corresponding with King as early as 1936,
World War II halted any plans from reaching fruition at that time. Following the war, Gréber was again contacted and his expertise requested. He arrived on October 2, 1945, and began working almost immediately. The Greber Plan, as it came to be known, was released in 1950 and presented to the House of Commons on May 22, 1951. The plan called for the complete reorganization of Ottawa's road and rail network, and included amongst the numerous
parkways was an east to west expressway along what was then a
Canadian National Railway line. With the rail lines removed, construction of the new expressway got underway in 1957 when
Queen Elizabeth visited Ottawa to open the first session of the 23rd Parliament. On October 15, the Queen detonated dynamite charges from the Hurdman Bridge, which now overlooks the highway as it crosses the Rideau River, and formally dedicated the new project as the Queensway. At the ceremony, premier
Leslie Frost indicated that the entire project would cost C$31 million and emphasized the importance of the link to the Trans-Canada Highway. The Queensway was constructed in four phases, each opening independently: phase one, from Alta Vista Drive (now Riverside Drive) east to Highway 17 (Montreal Road); phase two, from Highway 7 and Highway 15 (Richmond Road) to Carling Avenue; phase three, from Carling Avenue to O'Connor Street; and, phase four, from O'Connor Street to Alta Vista Drive, crossing the
Rideau Canal and Rideau River. Phase one opened to traffic on November 25, 1960, extending up to the Rideau River. On the western side of Ottawa, phase two opened a year later in October 1961. The central section presented the greatest challenge, as an embankment was built to create
grade-separations. In addition, the structures over the Rideau Canal and river required several years of construction. On May 15, 1964, the majority of the third phase was ceremonially opened. completing the Carling Avenue interchange and extending the freeway as far as
Bronson Avenue. Several months later, on September 17 the short but complicated section east to O'Connor Street was opened. The interchange opened on January 1, 1966, allowing travel in both directions over the canal. The final segment, linking the two section of the Queensway, was placed into service on October 28, 1966. Following this, the Highway 17 designation was applied along the Queensway and the old routing renumbered as Highway 17B.
Bypasses and upgrades Although it was completed from Manitoba to Quebec in 1960, many upgrades to the original routing of Highway 17 had and would take place over the years. In addition to bypasses around almost every urban centre it encountered, many original sections have been downloaded to regional and local jurisdiction or decommissioned entirely to lie abandoned in the forest. Of special note are reroutings in the Ottawa Valley – where the highway follows very little of the original routing – and around Thunder Bay, where it has undergone several reroutings and upgrades since the 1920s. In the following section, upgrades are listed from west to east due to complex chronologies. ;Thunder Bay The original routing of Highway 17 travelled into Port Arthur along the Dawson Road, now
Highway 102. ;Nipigon Highway 17 originally entered Red Rock along what is now
Highway 628 before turning north alongside the Nipigon River north to Nipigon. ;Sault Ste. Marie Although the route into and out of Sault Ste. Marie has remained generally the same, Highway 17 has been rerouted through the city numerous times. In addition, to the east of the city, the route has been redirected onto a four lane at-grade expressway around Echo Bay. As recently as 2022, local government has reached out to the provincial government to revisit possibilities of creating a bypass around Sault Ste. Marie—however this plan has long been stalled by the
MTO and provincial government, largely due to the high cost of construction and uncertain demand; there has also been no environmental impact assessment to date. ;Espanola ;Sudbury The route of Highway 17 in Sudbury currently follows the
Southwest and Southeast Bypasses through the south end of the city. Prior to the completion of this route, the highway followed what is now
Municipal Road 55 through the downtown core. ;North Bay ;Upper Ottawa Valley Construction of the Renfrew Bypass began in June 1974, and continued for three years, opening in 1977. ;Ottawa ;Lower Ottawa Valley ;Elsewhere The last gravel stretches of Highway 17, between Kenora and Dryden and north of Batchawana Bay, were paved in 1964.
Downloads On April 1, 1997, the
Ministry of Transportation of Ontario (MTO) transferred the responsibility of maintenance and upkeep along of Highway 17 east of "the split" with Highway 417 to Trim Road (Regional Road 57), a process commonly referred to as
downloading. The Region of Ottawa–Carleton designated the road as
Regional Road 174. Despite the protests of the region that the route served a provincial purpose, a second round of transfers saw the remainder of Highway 17 to the Region's eastern limit downloaded on January 1, 1998, adding to the length of Regional Road 174. The highway was also downloaded within the
United Counties of Prescott and Russell, where it was redesignated as County Road 17. The result of these transfers was the truncation of Highway 17 at the western end of Highway 417, while the
Trans-Canada Highway designation was taken from the former Highway 17 and applied to Highway 417. A short disconnected section of Highway 17 between Ottawa Road 29 and Grants Side Road remains under provincial jurisdiction to the present day.
Conversion to Highway 417 northwest of Ottawa Expansion of the two lane Highway 17 west of the interchange with Highway 7 got underway in 1991; this section was renumbered as Highway 417 as construction progressed westward. The construction saw a second two lane roadway built parallel to the existing route to create a divided freeway, a process known as
twinning. When the twinning of Highway 17 reached March Road, new contracts were tendered to continue the process northward. Bot Construction was awarded the contract for the section north to Panmure Road on December 9, 1998. On February 16, 2000, the Ministry of Transportation of Ontario (MTO) officially announced that Highway 417 would be extended to Arnprior over the next several years. A contract to build the freeway from north of Panmure Road to south of Arnprior was tendered in early 2002. This work was completed and the extension opened to traffic on September 24, 2004. Concurrent with the twinning of Highway 7 between
Carleton Place and Ottawa, the interchange with Highway 417 was upgraded to support the divided traffic flows; a new flyover ramp was built connecting westbound Highway 417 with westbound Highway 7. Construction began on August 22, 2006, and was opened in June 2008 along with the Highway 7 expansion. Construction to twin the Arnprior Bypass portion of Highway 17, which included a new interchange at White Lake Road, began during the spring of 2009. The bypass was originally built in 1981 as one of a number of upgrades to Highway 17 between Ottawa and North Bay. It was intended for directing through traffic around downtown Arnprior and was designed for an eventual upgrade to a divided freeway. The major structure in this project was a second crossing of the Madawaska River. $7 million less than projected. In 2023, the new interchange with Calabogie Road was completed and opened. == Route description ==