300 Years History

Seaway Milestones

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1680

Dollier de Casson

Dollier de Casson, Superior of the Sulpician Seminary in Montreal, begins trying to build a 1.5 m. (5 feet) deep canal to bypass the Lachine Rapids between Lake St.Louis and Montreal; the canal was finally completed in 1824.

1779

Royal Army Engineers start work…

The Royal Army Engineers start work on four small canals on the north shore of the St. Lawrence at Montreal to connect Lake St. Louis to Lake St. Francis.

1783

Four small canals on the north shore

The four small canals on the north shore of the St. Lawrence are completed by the Royal Army Engineers. Only 0.76 m (2.5 feet) deep, they have a total of five locks, each 1.83 m (6 feet) wide — the first ever built on the St. Lawrence, and possibly in North America.

1824

Casson Canal

The Casson Canal (now known as the Lachine Canal) links Montreal with Lake St. Louis. At the time it was 1.52 m (5 feet) deep and had seven locks.

1829

“Ann and Jane” Schooner

On November 30, 1829, the schooner “Ann and Jane” completes the first transit of the partially completed Welland Canal.

1833

First Welland Canal

The first Welland Canal is completed. Built by the Welland Canal Company, it is 43.5 km (27 miles) long, with 40 wooden locks.

1843

Cornwall Canal

Canal opens at Cornwall.

1845

Beauharnois Canal

Canal opens at Beauharnois.

1895

Canadian Deep Waterways Commission

The first joint U.S.-Canadian Deep Waterways Commission is formed to study the feasibility of a Seaway. It is followed by an International Joint Commission in 1909, but the Seaway remains a dream.

1932

Fourth Welland Canal completed

Fourth Welland Canal completed: 43.5 km (27 miles) long, 7.62 m (25 feet) minimum depth. Eight locks raise ships a total of 99.36 m (326 feet). This was the first step in the completion of the modern Seaway.

Canada and the U.S. sign the Great Lakes - St. Lawrence Deep Waterway Treaty, but no action is taken.

1949

Public interest in a deeper waterway…

Public interest in a deeper waterway on the St. Lawrence River and increased trade pressures lead to a joint Canadian-U.S. Deep Waterways Commission to again study the feasibility of what will eventually become the St. Lawrence Seaway. (Two world wars and the opposition of influential rail and other private industrial sectors in the U.S. had prevented the start of any joint projects. Negotiations continued, an International Joint Commission was established in 1909, followed by the signing of the 1932 Great Lakes - St. Lawrence Deep Waterway Treaty and the Great Lakes - St. Lawrence Basin Agreement in 1941. Still, work did not begin).

1951

St. Lawrence Seaway Authority Act…

The St. Lawrence Seaway Authority Act and the International Rapids Power Development Act allow Canadians to begin navigation works on the Canadian side of the river from Montreal to Lake Ontario, as well as in the Welland Canal. At the same time, a joint U.S. Canadian project begins power works in the International Rapids section of the St. Lawrence. The U.S. also begins work on the Wiley-Dondero Canal that will bypass the International Rapids. Co-operation and consultation on the elements of the modern Seaway commences.

1954

St. Lawrence Seaway Authority is established

The St. Lawrence Seaway Authority is established by an Act of Parliament, with the mandate to acquire lands for, construct, operate and maintain a deep draft waterway between the port of Montreal and Lake Erie, along with the international bridges that cross it and other lands and structures.

The United States joins Canada on the development of the St. Lawrence Seaway with the passage of the Wiley-Dondero Act (or Seaway Act) on May 13. The U.S. Saint Lawrence Seaway Development Corporation (SLSDC) was also created by the law.

Agreement reached between the U.S. and Canada concerning construction of the Seaway. The cost of the navigation project was $470.3 million, of which Canada paid $336.5 million and the U.S. $133.8 million.

Work on the Seaway begins in September. Four Montreal-area bridges are modified without disrupting traffic, new channels are dug and existing ones dredged. Excavators uncover rock formations so tough that new methods and stronger machinery are needed. The related power development will flood 259 square km (100 square miles); land is expropriated and entire communities resettled. Some 6,500 people are moved to new homes and some 550 dwellings are transported to waiting foundations in the new Ontario towns of Long Sault, Ingleside and Iroquois.

1958

New Iroquois Lock is in regular use by May

The new Iroquois Lock is in regular use by May. On July 4, the Snell and Eisenhower Locks built by the U.S. at Massena, N.Y., are opened and the power is switched on at the international Moses-Saunders generating station. The four-year construction deadline has been met almost to the day.

1959

Completion of the joint U.S.-Canadian St. Lawrence Seaway navigation project…

Completion of the joint U.S.-Canadian St. Lawrence Seaway navigation project links the Great Lakes region to global markets.

On April 25, the icebreaker “D'Iberville” begins the first through transit of the St. Lawrence Seaway, officially opened by Queen Elizabeth and President Eisenhower on June 26. Dedication ceremonies were also held June 27 in Massena, New York, and involved the Queen and Vice-President Richard M. Nixon.

Gross ship registered tons for this navigation season amount to 25.1 million.

1966

First Welland Canal traffic control center

The first Welland Canal traffic control center comes into service.

The U. S. Department of Transportation is created, making SLSDC subject to the policy direction and supervision of the Secretary of Transportation.

1973

Welland Canal realignment

The Welland Canal realignment to bypass the City of Welland opens to navigation.

1977

Montreal-Lake Ontario section reaches 57.7 million tonnes

The total annual cargo on the Montreal-Lake Ontario section reaches 57.7 million tonnes.

1978

Canadian Seaway operations become self-sufficient

Canadian Seaway operations become self-sufficient, depending on revenue from tolls and investments. The federal government still contributes to major capital works.

1979

Gross tonnage of ships passing through the Seaway reaches 80.3 mil tonnes

The gross tonnage of ships passing through the Seaway reaches 80.3 million tonnes.

20th anniversary of the opening of the Seaway to deep-draft navigation, and 150th anniversary of opening of original Welland Canal.

1983

Seaway carries its billionth tonne of cargo

The Seaway carries its billionth tonne of cargo.

1984

Seaway celebrates 25th anniversary

The Seaway celebrates its 25th anniversary. U.S. President Ronald Reagan declares 1984 as “The Year of the Seaway” and June 27, 1984 as “Seaway Day”.

1986

St. Lawrence Seaway Authority begins a seven-year program

The St. Lawrence Seaway Authority begins a seven-year program to rehabilitate the Welland Canal, at a cost to the federal government of $175 million.

The U.S. Congress passes the Water Resources Development Act converting the SLSDC from a self-financing to an appropriated agency and eliminating the U.S. portion of Seaway tolls.

1989

Seaway has handled more than 160,000 ship transits

In 30 years of operation, the Seaway has handled more than 160,000 ship transits by ships from more than 50 nations.

1993

Seaway’s draft is increased

The Seaway’s draft is increased from 26 feet to 26 feet, 3 inches, enabling ships to carry more cargo per voyage, and wide-beam ships, exceeding the 76 foot limit by up to 2 feet, are first admitted through the locks.

1995

Montreal/Lake Ontario section Seaway establishes new record

The Montreal/Lake Ontario section of the Seaway establishes a new record, remaining open from March 24 to December 28, a total of 280 days.

1996

Seaway reaches two billion tonnes of cargo…

May 10th marks the passage through the Seaway system of two billion tonnes of cargo, valued at more than $300 billion.

In June 1996, the Canada Marine Act that will commercialize the Seaway is first introduced in the House of Commons. Parliament is dissolved for a federal election before the Act passes, it is reintroduced in August 1997, and receives royal assent in June 1998.

1998

The St. Lawrence Seaway Management Corporation takes over…

On October 1st, operational control of the Canadian portion of the Seaway is officially transferred from The St. Lawrence Seaway Authority to The St. Lawrence Seaway Management Corporation, a new not-for-profit corporation. The Government of Canada continues to own the infrastructure and acts as regulator.

1999

40th anniversary

40th anniversary of the opening of the St. Lawrence Seaway.

2003

St. Lawrence Seaway becomes the first inland waterway…

St. Lawrence Seaway becomes the first inland waterway in North America to require commercial ships to be equipped with Automatic Identification System (AIS). A transponder-based system employing global positioning system (GPS) and differential GPS technology that transmits data on VHF frequencies, AIS improves safety, security and efficiency on the waterway.

2004

175th anniversary of first Welland Canal

175th anniversary of the first Welland Canal.

50th anniversary of the beginning of construction of the St. Lawrence Seaway.

The Seaway’s draft is increased from 26 feet, 3 inches, to 26 feet, 6 inches, enabling ships to carry up to 300 tonnes of additional cargo per voyage.

The Great Lakes St. Lawrence Seaway is now branded as Hwy H2O.

2006

Montreal/Lake Ontario section of Seaway establishes new record

The Montreal/Lake Ontario section of the Seaway establishes a new record, remaining open from March 23rd to December 30th, a total of 283 days.

2007

75th anniversary of fourth Welland Canal

75th anniversary of the fourth Welland Canal.

2009

50th anniversary of St. Lawrence Seaway

50th anniversary of the St. Lawrence Seaway.

The SLSDC begins its decade-long Asset Renewal Program (ARP) to address U.S. Seaway capital infrastructure investments.

2012

St. Lawrence Seaway introduces use of Draft Information System

The St. Lawrence Seaway introduces the use of the Draft Information System, which combines satellite-based location data and highly accurate hydrographic maps to model a ship’s under-keel-clearance in 3D, allowing vessels to safely transit the Seaway with an additional three inches of draft (allowing for up to 400 tonnes of additional cargo to be loaded).

2015

SLSMC receives Promising Innovation in Transport Award

The St. Lawrence Seaway Management Corporation (SLSMC) receives the Promising Innovation in Transport Award from the International Transport Forum at the OECD, an intergovernmental organization for the transport sector, with 54 member countries. The award recognizes the SLSMC's pioneering work in developing the world’s first Hands Free Mooring (HFM) system for ships transiting its locks.

2017

Montreal/Lake Ontario section of Seaway establishes a new record

The Montreal/Lake Ontario section of the Seaway establishes a new record, remaining open from March 20th to January 11th, a total of 298 days.

2018

SLSMC completes its modernization program

The SLSMC completes its modernization program, which includes HFM and the remote operation of Canadian locks from centralized operation control centres.

The SLSDC makes HFM at its Eisenhower Lock in Massena, N.Y. operational on September 19.

2019

60th anniversary of St. Lawrence Seaway

60th anniversary of the opening of the St. Lawrence Seaway.

SLSDC completes the installation of HFM at its second lock (Snell Lock), finalising the greatest advancement in Seaway operations since its opening in 1959.

The SLSDC’s new 118-foot, ice-class tugboat “Seaway Guardian” is delivered to its Massena, N.Y. operations facilities. The tug replaces the “Robinson Bay” as the SLSDC’s primary vessel used for emergency response, icebreaking, and buoy maintenance and deployment/retrieval.

 
Dollier de Casson
1680

Dollier de Casson

Royal Army Engineers start work…

Four small canals on the north shore

Casson Canal

“Ann and Jane” Schooner

First Welland Canal

Cornwall Canal

Beauharnois Canal

Canadian Deep Waterways Commission

Fourth Welland Canal completed

Public interest in a deeper waterway…

St. Lawrence Seaway Authority Act…

St. Lawrence Seaway Authority is established

New Iroquois Lock is in regular use by May

Completion of the joint U.S.-Canadian St. Lawrence Seaway navigation project…

First Welland Canal traffic control center

Welland Canal realignment

Montreal-Lake Ontario section reaches 57.7 million tonnes

Canadian Seaway operations become self-sufficient

Gross tonnage of ships passing through the Seaway reaches 80.3 mil tonnes

Seaway carries its billionth tonne of cargo

Seaway celebrates 25th anniversary

St. Lawrence Seaway Authority begins a seven-year program

Seaway has handled more than 160,000 ship transits

Seaway’s draft is increased

Montreal/Lake Ontario section Seaway establishes new record

Seaway reaches two billion tonnes of cargo…

The St. Lawrence Seaway Management Corporation takes over…

40th anniversary

St. Lawrence Seaway becomes the first inland waterway…

175th anniversary of first Welland Canal

Montreal/Lake Ontario section of Seaway establishes new record

75th anniversary of fourth Welland Canal

50th anniversary of St. Lawrence Seaway

St. Lawrence Seaway introduces use of Draft Information System

SLSMC receives Promising Innovation in Transport Award

Montreal/Lake Ontario section of Seaway establishes a new record

SLSMC completes its modernization program

60th anniversary of St. Lawrence Seaway

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