Ontario Highway 418
|East Durham Link|
Planned routing of Highway 407E, Highway 412 and Highway 418 (all in red); Highway 418 is the eastern connector to Highway 401
|Length||10 km (6 mi)|
Planned completion 2020
|South end||Highway 401 near Courtice|
|North end||Highway 407 in Clarington|
King's Highway 418, or simply Highway 418, is a future tolled freeway in the Canadian province of Ontario. The planned 400-series highway will travel through the Regional Municipality of Durham to connect Highway 401 with the eastern extension of Highway 407. The freeway will be located entirely within Clarington near Durham Regional Road 34 (Courtice Road).
Highway 418 is the second of two freeways connecting the eastern extension of Highway 407 with Highway 401; the other is Highway 412, located to the west in Whitby. The two routes, known then as the East Durham Link and West Durham Link, first appeared as part of the June 2007 "Technically Recommended Route", which was submitted as part of the environmental assessment (EA) for the extension, but had been announced earlier that year on March 7 by the Government of Canada as part of an investment in Greater Toronto Area infrastructure.
The EA report was released on August 17, 2009, and included detailed plans for the configuration of the interchanges along the new freeway.
On February 6, 2015, it was announced by the MTO that the East Durham Link would be designated Highway 418. On May 11, 2015, a contract was awarded for the second phase of the project, which would begin construction of a portion of Highway 418 from Highway 407 to Taunton Road, this was finished by December 2017 and opened on January 2, 2018 (but currently signed as part of Highway 407). The remainder of the highway is scheduled to be completed by 2020. As of fall 2016, the construction progress of the highway already reached Highway 401 meaning that the highway could be completed ahead of schedule. 
Note distances are approximate calculations.
|Clarington||0.0||0.0||Highway 401||Opening in 2020.|
|3.8||2.4||Durham Regional Highway 2||Opening in 2020; formerly Highway 2|
|11.6||7.2||Regional Road 4 (Taunton Road)||Phase 2A (2018): Temporary southern(eastern) terminus of freeway, but signed as Highway 407. |
Phase 2B (2020): Northbound exit and Southbound entrance only. 
|12.8||8.0||Highway 407||Phase 2A (2018): Freeway continues west as Highway 407E. |
Phase 2B (2020): Full interchange.
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- "407 Extension". www.clarington.net. 15 February 2017. Retrieved March 12, 2019.
- "New Highway Numbers". Highway 407 East. Archived from the original on April 19, 2015. Retrieved February 10, 2015.
- "Highway 407 Project Overview". Highway 407 East. Retrieved August 3, 2016.
- "Canada's New Government Announces Investment to Cut Commute Times, Clear the Air and Drive the Economy in the Greater Toronto Area". Web site of the Prime Minister of Canada. Archived from the original on February 27, 2010. Retrieved August 11, 2016.
- "Exhibit 8.7". 407 East Environmental Assessment Report (PDF) (Report). Government of Ontario. August 17, 2009. Archived from the original (PDF) on September 29, 2011. Retrieved July 19, 2016.
- "407 opened from Harmony Road to Taunton Road". Durham Region. December 8, 2017.
- "Phase 2". Highway 407 East. Retrieved July 18, 2016.