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- Q7231422 subject Q8223415.
- Q7231422 subject Q8311617.
- Q7231422 subject Q8312292.
- Q7231422 subject Q8321505.
- Q7231422 subject Q8667749.
- Q7231422 subject Q8851332.
- Q7231422 subject Q8859772.
- Q7231422 subject Q8869062.
- Q7231422 abstract "The Portage Lake Lift Bridge (officially the Houghton–Hancock Bridge) connects the cities of Hancock and Houghton, in the US state of Michigan, across Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. US Highway 41 (US 41) and M-26 are both routed across the bridge. It is the only land-based link between the north (so-called Copper Island) and south sections of the Keweenaw peninsula.The original bridge on the same site was a wooden swing bridge built in 1875. The bridge was built by James P. Edward of Fox and Howard Inc. of Chicago. Three local men raised $47,000 in stocks for the toll bridge. Construction began in the spring of 1875 and was finished in the spring of 1876. This was replaced by a steel swing bridge, the Portage Canal Swing Bridge, built by the King Bridge Company in 1901. The Portage Canal Swing Bridge was damaged when a ship, the Northern Wave, collided with it in 1905. The center swinging section of the bridge was replaced and a similar incident almost occurred again in 1920, but the ship was able to stop by dropping its anchor, which snagged on the bottom of the lake. In 1959, the Portage Canal Swing Bridge was replaced, at a cost of about 11-13 million US dollars (sources vary), by the current bridge which was built by the American Bridge Company.This moveable bridge is a lift bridge with the middle section capable of being lifted from its low point of four feet clearance over the water to a clearance of 100 feet (30 m) to allow boats to pass underneath. The bridge is the world's heaviest and widest double-decked vertical-lift bridge. More than 35,000 tons of concrete and 7,000 tons of steel went into the bridge, which replaced the narrow 54-year-old swing bridge, declared a menace to navigation on the busy Keweenaw Waterway. Its center span "lifts" to provide 100 feet (30 m) of clearance for ships.The original 1959 design by Hazelet and Erdal of Chicago of the bridge's liftspan had roadways constructed on both levels with rails imbedded in the road surface on the lower deck. This allowed the span to be partially raised to allow small and medium boat traffic to pass underneath without disrupting vehicular traffic. From this middle position, the span would then only need to be raised for large ships or lowered to allow trains to cross. With the end of rail service in 1982, the lowest position is no longer needed to allow trains to pass so the bridge is not lowered below the middle position during the summer boating season except for periods of maintenance or repair. In the winter after the lake freezes, the bridge is placed in the lowest position to allow the lower deck to be used by snowmobile traffic.Hancock and Houghton hold an annual celebration called Bridgefest to commemorate the opening of the bridge which united their two communities.".
- Q7231422 crosses Q6397950.
- Q7231422 height "54.864".
- Q7231422 length "152.4".
- Q7231422 locatedInArea Q12429.
- Q7231422 locatedInArea Q12435.
- Q7231422 mainspan "76.2".
- Q7231422 maintainedBy Q2350930.
- Q7231422 openingYear "1959".
- Q7231422 thumbnail PortageLakeLiftBridge.jpg?width=300.
- Q7231422 type Q1898246.
- Q7231422 unitedStatesNationalBridgeId "3380".
- Q7231422 vehiclesPerDay "20000".
- Q7231422 wikiPageExternalLink www.bridgefestfun.com.
- Q7231422 wikiPageExternalLink history-bridge.html.
- Q7231422 wikiPageExternalLink 0,4616,7-151-9620_11154_11188-28585--,00.html.
- Q7231422 wikiPageExternalLink Index.html.
- Q7231422 wikiPageExternalLink image.aspx?T=1&S=10&Z=16&X=1903&Y=26100&W=3&qs=%7chancock%7cmichigan%7c.
- Q7231422 wikiPageExternalLink motion.html.
- Q7231422 wikiPageExternalLink 60406.
- Q7231422 wikiPageExternalLink spans.htm.
- Q7231422 wikiPageExternalLink portage_lake_bridge.htm.
- Q7231422 wikiPageExternalLink bridge_picture.asp.
- Q7231422 wikiPageWikiLink Q1066.
- Q7231422 wikiPageWikiLink Q12429.
- Q7231422 wikiPageWikiLink Q12430.
- Q7231422 wikiPageWikiLink Q12435.
- Q7231422 wikiPageWikiLink Q1898246.
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- Q7231422 wikiPageWikiLink Q2350930.
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- Q7231422 wikiPageWikiLink Q6397950.
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- Q7231422 wikiPageWikiLink Q8223415.
- Q7231422 wikiPageWikiLink Q8311617.
- Q7231422 wikiPageWikiLink Q8312292.
- Q7231422 wikiPageWikiLink Q8321505.
- Q7231422 wikiPageWikiLink Q8667749.
- Q7231422 wikiPageWikiLink Q8851332.
- Q7231422 wikiPageWikiLink Q8859772.
- Q7231422 wikiPageWikiLink Q8869062.
- Q7231422 wikiPageWikiLink Q950431.
- Q7231422 bridgeName "Portage Lake Lift Bridge".
- Q7231422 crosses "Portage Waterway arm of Portage Lake".
- Q7231422 design Q1898246.
- Q7231422 id "3380".
- Q7231422 length "approx".
- Q7231422 locale "Hancock and Houghton, Michigan".
- Q7231422 mainspan "clearance".
- Q7231422 maint Q2350930.
- Q7231422 officialName "Houghton–Hancock Bridge".
- Q7231422 open "1959".
- Q7231422 type Place.
- Q7231422 type ArchitecturalStructure.
- Q7231422 type Bridge.
- Q7231422 type Infrastructure.
- Q7231422 type Location.
- Q7231422 type Place.
- Q7231422 type RouteOfTransportation.
- Q7231422 type Thing.
- Q7231422 type Q12280.
- Q7231422 comment "The Portage Lake Lift Bridge (officially the Houghton–Hancock Bridge) connects the cities of Hancock and Houghton, in the US state of Michigan, across Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. US Highway 41 (US 41) and M-26 are both routed across the bridge.".
- Q7231422 label "Portage Lake Lift Bridge".
- Q7231422 depiction PortageLakeLiftBridge.jpg.
- Q7231422 name "Houghton–Hancock Bridge".
- Q7231422 name "Portage Lake Lift Bridge".