page_title: Covered bridge
section_title: Bridges
hierarchical_section_title: Covered bridge / Bridges
caption_attribution_description: English: The covered bridge in West Montrose, Ontario
context_page_description: A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last 100 years.
context_section_description: About 1,600 covered bridges remain in the world. The relatively small number of surviving bridges is due to deliberate replacement, neglect, and the high cost of restoration. They tend to be in isolated places, making them subject to vandalism and arson.
caption: The covered bridge in West Montrose, Ontario, October 2018
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