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Ada Covered Bridge
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<h2 id="design">Design</h2> <p>The bridge uses the Brown truss system, consisting of diagonal compression beams and almost vertical <a href="/facts/Tension_member/Np4LvIhK">tension members</a> (slanting in at the top toward the center of the span), patented by <a href="/facts/Josiah_Brown_Jr./d630RVXt">Josiah Brown Jr.</a> of Buffalo, New York, in 1857. A timber bearing Brown's name was discovered during repair work carried out in 1913.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> </p><p>The bridge is 125 feet (38 m) long, and originally rested on wooden pilings. As is typical for covered bridges, its gabled roof is covered with creosote shingles. </p> <h2 id="history">History</h2> <p>The <a href="/facts/Michigan_State_Legislature/3HAc7X8m">Michigan State Legislature</a> authorised Ada Township to borrow up to <a href="/facts/United_States_dollar/naEEDUhC">$</a>3,000 for building or maintaining bridges in the area. Construction of this bridge, also known as the "Bradfield Bridge" was carried out in 1867 by William Holmes. </p><p>Prior to construction of the upstream dam,<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> the Thornapple River was prone to flooding. According to a <a href="/facts/Historical_marker/nWWmn9Uh">historical marker</a> posted at the bridge, "it is said that farmers used to drive wagons loaded with stones onto the bridge during high water to hold it to the foundation."<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> </p><p>Repair work was carried out in 1913 to modify the trusses, and replace the timber abutments with reinforced concrete.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> The bridge was part of an important artery into the village of Ada until 1930, when the main highway was rerouted and a concrete bridge built further down the Thornapple River. At that time the bridge was closed to automobile traffic, reverting to pedestrian use only. </p><p>In 1941 the Kent County Road Commission and the <a href="/facts/Works_Progress_Administration/BTnBat98">Works Progress Administration</a> made extensive restorations, re-roofing the bridge with new protective creosote shingles and replacing many of its decayed underlying supports with new beams. The Road Commission purchased a nearby barn to supply wood for replacement of badly deteriorated elements.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p><p>The bridge was listed with the Michigan State Register on May 9, 1969, and with the National Register on February 16, 1970. It was awarded a Michigan Historical Marker (site L0075) on August 28, 1974.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> It is one of four existing publicly owned covered bridges in Michigan.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p><p>In 1979 the roof collapsed due to heavy snow, and the bridge was restored using funds raised by private donations. Shortly after the repairs were finished, the bridge was completely destroyed by fire. The citizens again rallied, this time with the help of the <a href="/facts/Amway/fRKdXBgk">Amway corporation</a>, headquartered in Ada, and rebuilt it once again. The replica bridge, now resting on concrete abutments, is 14 feet (4.3 m) wide and 125 feet (38 m) long. </p><p>The bridge is now open only to pedestrian traffic and connects the Village of Ada on one side of the Thornapple River with a park on the other side. It is maintained by the Kent County Park system.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a><a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="images">Images</h2> <h2 id="see-also">See also</h2> <ul> <li>Michigan portal</li><li>National Register of Historic Places portal</li></ul> <ul><li><a href="/facts/List_of_Michigan_covered_bridges/MCNNFvJJ">List of Michigan covered bridges</a></li> <li><a href="/facts/List_of_Registered_Historic_Places_in_Kent_County,_Michigan/67rvIrLN">List of Registered Historic Places in Kent County, Michigan</a></li></ul> <h2 id="external-links">External links</h2> <ul><li> Media related to Ada Covered Bridge at Wikimedia Commons</li> <li><a href="https://maps.google.com/maps?hl=en&ie=UTF8&om=1&z=18&ll=42.952477,-85.486325&spn=0.002843,0.004517&t=h">Aerial view of the Ada Covered Bridge</a></li> <li><a href="https://structurae.net/structures/data/index.cfm?ID=20006823">Ada Covered Bridge</a> at <i><a href="/facts/Structurae/V5sks6EK">Structurae</a></i></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Historical marker data, from marker detail Archived 2006-09-28 at the Wayback Machine page on michigan.org site, accessed October 09, 2006 <a href="http://www.michigan.org/travel/detail.asp?m=2&p=B5658" target="_blank">http://www.michigan.org/travel/detail.asp?m=2&p=B5658</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>An image of this dam: Image:Ada Michigan ThornappleRiver Dam DSCN9695.JPG <a href="/wiki/File:Ada_Michigan_ThornappleRiver_Dam_DSCN9695.JPG" target="_blank">/wiki/File:Ada_Michigan_ThornappleRiver_Dam_DSCN9695.JPG</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Historical marker data, from ada bridge Archived May 8, 2006, at the Wayback Machine page on wmta.org site, accessed October 09, 2006 <a href="http://www.wmta.org/coveredbridges/ada_bridge.html" target="_blank">http://www.wmta.org/coveredbridges/ada_bridge.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Historical marker data, from marker detail Archived 2006-09-28 at the Wayback Machine page on michigan.org site, accessed October 09, 2006 <a href="http://www.michigan.org/travel/detail.asp?m=2&p=B5658" target="_blank">http://www.michigan.org/travel/detail.asp?m=2&p=B5658</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>synthesised from wmta.org Archived May 8, 2006, at the Wayback Machine and Ada page Archived October 24, 2006, at the Wayback Machine on relocate-america.com site, accessed October 09, 2006 <a href="http://www.wmta.org/coveredbridges/ada_bridge.html" target="_blank">http://www.wmta.org/coveredbridges/ada_bridge.html</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>marker data from L0075[usurped] page on michmarkers.com site, accessed October 09, 2006 <a href="https://web.archive.org/web/20070313033505/http://www.michmarkers.com/startup.asp?startpage=L0075.htm" target="_blank">https://web.archive.org/web/20070313033505/http://www.michmarkers.com/startup.asp?startpage=L0075.htm</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>from Ada page Archived October 24, 2006, at the Wayback Machine on relocate-america.com site, accessed October 09, 2006 <a href="http://www.relocate-america.com/states/mi/cities/ada.htm" target="_blank">http://www.relocate-america.com/states/mi/cities/ada.htm</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Historical marker data, from ada bridge Archived May 8, 2006, at the Wayback Machine page on wmta.org site, accessed October 09, 2006 <a href="http://www.wmta.org/coveredbridges/ada_bridge.html" target="_blank">http://www.wmta.org/coveredbridges/ada_bridge.html</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>from Ada page Archived October 24, 2006, at the Wayback Machine on relocate-america.com site, accessed October 09, 2006 <a href="http://www.relocate-america.com/states/mi/cities/ada.htm" target="_blank">http://www.relocate-america.com/states/mi/cities/ada.htm</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> </ol>