{"id":506,"date":"2021-04-30T16:23:31","date_gmt":"2021-04-30T21:23:31","guid":{"rendered":"http:\/\/laiben.com\/wordpress1\/?page_id=506"},"modified":"2025-05-21T11:16:40","modified_gmt":"2025-05-21T16:16:40","slug":"main-street-overpass","status":"publish","type":"page","link":"http:\/\/laiben.com\/wordpress1\/main-street-overpass\/","title":{"rendered":"Main Street Overpass"},"content":{"rendered":"\n

The Main Street overpass at the south end of Ste. Genevieve consists of a pony plate girder bridge and a wood trestle. Taking measurements from Google Earth, I estimated the girder bridge span at about 75′ and the trestle at about 136′. More information and images can be found at the excellent Bridgehunter<\/strong><\/a> website.<\/p>\n\n\n\n

The bridge was reduced to 50 scale feet and built with Evergreen Styrene parts. MicroMark resin decals were used to simulate rivets. The critical factor for me in reducing the scale was to retain the extremely low slung appearance of the original. If one looks closely at the Google Earth image, the clearance sign indicates only 9 feet from road to bridge!<\/p>\n\n\n\n

Much of the bridge fabrication techniques followed prototype practices discussed in the Details of Railroad Girder Bridges<\/em> by Clifford Suttle (1906, University of Illinois; PDF<\/a><\/strong>).<\/p>\n\n\n\n

Many thanks to Shawn Branstetter<\/strong><\/a> for inspiring me to undertake this piece. Mike George has completed another excellent bridge model featured in Gene Deimling’s P48 Blog<\/strong><\/a>.<\/p>\n\n\n

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Google Earth image which served as the primary tem[plate for constructing the overpass.<\/figcaption><\/figure>\n<\/div>\n\n
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Laying out the bridge in styrene.<\/figcaption><\/figure>\n<\/div>\n\n
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Applying the Archer rivets is a test of ones’ patience. <\/figcaption><\/figure>\n<\/div>\n\n
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I fabricated a template for building the trestle bents. <\/figcaption><\/figure>\n\n\n
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Building the substructure where the overpass will sit.<\/figcaption><\/figure>\n<\/div>\n\n
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Trial fitting of the bridge.<\/figcaption><\/figure>\n<\/div>\n\n
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Final installation. The truck gives an idea of how low the bridge sits to the underlying road.<\/figcaption><\/figure>\n<\/div>\n\n
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Another image of the prototype, this time from 2024 as I was driving through Ste. Genevieve in my van, which stands 9.5 feet tall. Approaching this underpass with its warning sign does get your attention.<\/figcaption><\/figure>\n<\/div>\n\n\n

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The Main Street overpass at the south end of Ste. Genevieve consists of a pony plate girder bridge and a wood trestle. Taking measurements from Google Earth, I estimated the girder bridge span at about 75′ and the trestle at … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-506","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/pages\/506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/comments?post=506"}],"version-history":[{"count":14,"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/pages\/506\/revisions"}],"predecessor-version":[{"id":1859,"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/pages\/506\/revisions\/1859"}],"wp:attachment":[{"href":"http:\/\/laiben.com\/wordpress1\/wp-json\/wp\/v2\/media?parent=506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}