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  2. General W.K. Wilson Jr. Bridge - Wikipedia

    en.wikipedia.org/wiki/General_W.K._Wilson_Jr._Bridge

    The General W.K. Wilson Jr. Bridge, more commonly known locally as the "Dolly Parton Bridge", consists of dual parallel tied through arches of weathering steel and beam viaducts of concrete that form one continuous span carrying four lanes of Interstate 65 across the Mobile-Tensaw River Delta northeast of the U.S. city of Mobile, Alabama.

  3. Bogie - Wikipedia

    en.wikipedia.org/wiki/Bogie

    In trucking, a bogie is the subassembly of axles and wheels that supports a semi-trailer, whether permanently attached to the frame (as on a single trailer) or making up the dolly that can be hitched and unhitched as needed when hitching up a second or third semi-trailer (as when pulling doubles or triples).

  4. Dolly (trailer) - Wikipedia

    en.wikipedia.org/wiki/Dolly_(trailer)

    Tow dolly – a semi-trailer designed as automobile rescue equipment. It is designed to couple to the concerned automobile's powered wheel, i.e. the front wheel of a Front-wheel drive automobile, or the rear wheel of a rear-wheel drive automobile, by locking the powered wheels onto the tow dolly's tray.

  5. List of fatal accidents and incidents involving commercial ...

    en.wikipedia.org/wiki/List_of_fatal_accidents...

    This is a list of fatal commercial aviation accidents and incidents in or in the vicinity of the United States or its territories.. It comprises a subset of both the list of accidents and incidents involving airliners in the United States and the list of accidents and incidents involving commercial aircraft.

  6. Roller-compacted concrete - Wikipedia

    en.wikipedia.org/wiki/Roller-compacted_concrete

    The rebuilt upper reservoir of the Taum Sauk plant, nearing completion in this photo, is the largest RCC dam in North America. [1]Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for portland cement. [2]

  7. Fifth-wheel coupling - Wikipedia

    en.wikipedia.org/wiki/Fifth-wheel_coupling

    The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin , a 2-or- 3 + 1 ⁄ 2 -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a ...