{"product_id":"oregons-covered-bridges-9780738558189","title":"Oregon's Covered Bridges","description":"Rugged individuals armed with hand tools, sweat, and ambition began building covered bridges in Oregon during the mid-1850s. These bridge builders often camped out at remote sites, living off the land or contracting with local farmers for food. Early owners of covered bridges financed construction by charging tolls 3cents for a sheep, 5cents for a horse and rider, and 10cents for a team of horses and wagon. In the early 20th century, the state provided standard bridge and truss designs to each county, and most of the resulting structures incorporated the Howe truss. With the abundance of Douglas fir and the shortage of steel during the world wars, the construction of wooden covered bridges continued well into the 1950s, mainly in the Willamette Valley. During the 1920s, Oregon boasted more than 350 covered br\u003cbr\u003e\u003cbr\u003e\u003cb\u003eBinding Type:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Arcadia Publishing (SC)\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 05\/26\/2008\u003cbr\u003e\u003cb\u003eISBN:\u003c\/b\u003e 9780738558189\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 127\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.71lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.18h x 6.61w x 0.37d\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eReview Citations: \u003c\/strong\u003e\u003ci\u003eReference and Research Bk News\u003c\/i\u003e 02\/01\/2009 pg. 311\u003cbr\u003e","brand":"Bill Cockrell","offers":[{"title":"Default Title","offer_id":36641170161820,"sku":"9780738558189","price":21.24,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/0804\/6492\/products\/img_b18d50bb-850d-4c9a-95c4-8cda266c5fa3.jpg?v=1603853237","url":"https:\/\/pastforward.org\/products\/oregons-covered-bridges-9780738558189","provider":"Past Forward","version":"1.0","type":"link"}