Editing Lethbridge Viaduct (section)

{{More citations needed|date=June 2013}}
{{Infobox Bridge
| bridge_name = Lethbridge Viaduct
| image = Lethbridge High Level.jpg
| caption = 
| official_name = Lethbridge Viaduct
| carries = [[Railway]]
| crosses = [[Oldman River]]
| locale = [[Lethbridge]], Alberta, Canada
| maint = [[Canadian Pacific Kansas City]]
| id = 
| design = 
| mainspan = 
| length = 1,624&nbsp;m
| width = 32.6&nbsp;m
| height = 95.7&nbsp;m
| load = 
| clearance = 
| below = 
| traffic = 
| open = {{date and age|1909}}
| closed = 
| toll = 
| troll = 
| map_cue = 
| map_image = 
| map_text = 
| map_width = 
| coordinates = {{coord|49|41|51|N|112|52|7|W|type:landmark_region:CA|display=inline,title}}
| lat = 
| long = 
}}

The '''Lethbridge Viaduct''', commonly known as the '''High Level Bridge''', is a [[railway]] [[trestle bridge]] over the [[Oldman River]] in [[Lethbridge]], Alberta, Canada. Constructed between 1907 and 1909 by the [[Canadian Pacific Railway]], it is the largest railway structure in Canada and the largest of its type in the world, and is still regularly maintained and used over a century since its construction.<ref name="Eng History">{{Cite web |last=Development |first=Mws.ca - Web and Application |title=Canadian Civil Engineering History & Heritage |url=http://epe.lac-bac.gc.ca/100/205/301/ic/cdc/civileng/eng/details.asp@id=41 |access-date=2023-08-07 |website=epe.lac-bac.gc.ca}}</ref>

In 2005, the construction of the viaduct was recognized as an [[event of national historic significance]].<ref>{{Cite web|url=https://www.pc.gc.ca/apps/dfhd/page_nhs_eng.aspx?id=10953|title=Construction of the Lethbridge Viaduct National Historic Event|website=Parks Canada|language=en|access-date=2024-09-02}}</ref>