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  2. Pin and hanger assembly - Wikipedia

    en.wikipedia.org/wiki/Pin_and_hanger_assembly

    Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"‍—‌a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...

  3. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    CAD: computer-aided design, computer-aided drafting; cadmium [plating]: CAGE: Commercial and Government Entity [code]: A CAGE code is a unique identifier to label an entity (that is, a specific government agency or corporation at a specific site) that is a CDA, ODA, or MFR of the part defined by the drawing.

  4. Rapid bridge replacement - Wikipedia

    en.wikipedia.org/wiki/Rapid_bridge_replacement

    This was used for the construction of the Maine State Route 103 bridge that crosses the York River. The seven-span 510-foot (160 m) long bridge was completed in 2010 as the first NEXT beam bridge. The second design was introduced in 2010 for Sibley Pond Bridge at the border of Canaan and Pittsfield, Maine. The design was called "NEXT D" with an ...

  5. Launching gantry - Wikipedia

    en.wikipedia.org/wiki/Launching_gantry

    Underslung (lower-beam) launching gantry used for Skyline guideway construction (2015). A launching gantry (also called bridge building crane, and bridge-building machine) is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects.

  6. List of bridge failures - Wikipedia

    en.wikipedia.org/wiki/List_of_bridge_failures

    Cast iron rail bridge Cast iron beams cracked and failed 2 killed Total damage to floor Wootton Bridge crash, caused by a flawed design & unreliable cast iron, failed from a repair Platte Bridge: St. Joseph, Missouri: United States 3 September 1861: Sabotage by Confederate partisans during US Civil War. 17–20 killed, 100 injured Chunky Creek ...

  7. Fracture critical bridge - Wikipedia

    en.wikipedia.org/wiki/Fracture_critical_bridge

    A fracture critical bridge is a bridge or similar span that is vulnerable to collapse of one or more spans as a result of the failure in tension of a single element. While a fracture critical design is not considered unsafe, it is subject to special inspection requirements that focus on the tension elements of its structure.

  8. Repairs on Big Sur's collapsed Highway 1 start this week. No ...

    www.aol.com/news/repairs-big-surs-collapsed...

    Repair work on Big Sur's Highway 1 is expected to begin this week. ... barriers along the highway's center line and also added new temporary painted road lines to widen the northbound lane ...

  9. Movable scaffolding system - Wikipedia

    en.wikipedia.org/wiki/Movable_scaffolding_system

    Underslung (lower-beam) movable scaffolding system used during construction of the Aurachtalbrücke Emskirchen [] (2015). A movable scaffolding system (MSS) is a special-purpose self-launching form used in bridge construction, specifically prestressed concrete bridges with segments or spans that are cast in place.