High-mast lighting
High-mast lighting is a tall pole with lighting attached to the top pointing towards the ground, usually but not always used to light a highway or recreational field. The pole that the lighting is mounted on is generally at least 30 metres (98 ft) tall (under this height it is referred to as conventional lighting system),[1] while the lighting consists of a luminaire ring surrounding the pole with one or several independent lighting fixtures mounted around it. Some units have the lighting surrounded by a circular shield to prevent or reduce light pollution or light trespass from affecting neighbourhoods adjacent to the highway.[2][3]
Maintenance of these systems are done by lowering the luminaire ring from the mast head to the base using a winch and motor[4] to the ground or at a height accessible by a cherry picker and located in areas to allow for easier access without disrupting traffic.[1]
NOTE: private highways are not included in this list.
Applications
- Ontario Highway 400 - Toronto and southern York Region
- Ontario Highway 401 sections in Toronto south of Highway 409
- Ontario Highway 403 - Ancaster, Hamilton to Mississauga
- Ontario Highway 409 - Toronto and Mississauga
- Ontario Highway 410 - Brampton
- Ontario Highway 417 - Ottawa
- Ontario Highway 427 - Toronto and southern York Region
- Gardiner Expressway - Toronto west of Dufferin Street
- Queen Elizabeth Way
- Don Valley Parkway/Ontario Highway 404
- Dougall Parkway - Windsor, Ontario
- Conestoga Parkway - Kitchener-Waterloo sections
- Interstate 95, Baltimore, Maryland
- All Interchanges, Chicago
- Dan Ryan Expressway, Chicago
- Stevenson Expressway, Chicago
- Kingery Expressway, Chicago's south suburbs
- I-290/IL-53, Schaumburg, Illinois
- Belvidere Road, Waukegan, Illinois
- Interstate 70 in various parts of Indiana
- Alphabet Loop, Kansas City, Missouri
- Detroit Industrial Freeway, Detroit's west suburbs
- Interstate 5, Seattle, Washington
- Downtown Connector, Atlanta, Georgia
- All Interchanges, Fort Worth, Texas
- All Interchanges, Dallas, Texas
- South R.L. Thornton Freeway, Dallas, Texas
- East R.L. Thornton Freeway, Dallas, Texas
- East L.B.J. Freeway, Dallas, Texas
- Tom Landry Freeway, Dallas, Texas
- George Bush Turnpike, Dallas, Texas
- Patriot Parkway, Dallas, Texas
- West Loop 12, Dallas, Texas
- Gulf Freeway, Houston, Texas
- Interstate 15, Las Vegas
- Quebec Autoroute 20 - Drummondville
- Quebec Autoroute 15 - Laval
- Quebec Autoroute 440 - Laval
- Quebec Autoroute 30 - Longueuil
- Quebec Autoroute 40 - Montreal
- Kwinana Freeway - Mill Point Road Interchange, Perth
- Central Motorway Junction - Auckland
- New Zealand State Highway 78 (Port Loop Road) - Timaru
- I-10 Katy Freeway, Houston, Texas
Besides roadways, highmast lighting is used in other sites requiring lighting over a large area:[4]
- truck and bus terminals
- railyards
- ship docks
- ferry terminals
- airports
- prisons
- industrial and commercial sites
- international borders
- parking lots
References
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