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Class Information
Number: 14/74.5
Name: Bridges > Girder
Description: Subject matter comprising a distinct generally horizontal structural member in the superstructure for supporting a traffic bearing surface.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8689383 Upper structure for bridge Apr. 8, 2014
8595879 Bridge beam placement system and apparatus Dec. 3, 2013
8578537 Partially prefabricated structural concrete beam Nov. 12, 2013
8539629 Fit-together type of precast concrete lining and bridging structural body Sep. 24, 2013
8499511 Precast composite structural floor system Aug. 6, 2013
8381485 Precast composite structural floor system Feb. 26, 2013
8370983 Rigid connection structure of bridge pier and concrete girder Feb. 12, 2013
8321985 Support platform and method of construction thereof Dec. 4, 2012
8316495 Method to compress prefabricated deck units with external tensioned structural elements Nov. 27, 2012
8297017 Precast composite structural floor system Oct. 30, 2012
8266751 Method to compress prefabricated deck units by tensioning supporting girders Sep. 18, 2012
8220095 Highway overpass bridge modification system and method Jul. 17, 2012
8196517 U-shaped span for railway track Jun. 12, 2012
8161691 Precast composite structural floor system Apr. 24, 2012
8104130 Bridge structure Jan. 31, 2012
8060966 Method and apparatus for bridge construction Nov. 22, 2011
8029710 Gantry robotics system and related material transport for contour crafting Oct. 4, 2011
8020235 Concrete bridge Sep. 20, 2011
7996945 Use of recycled plastics for structural building forms Aug. 16, 2011
7874035 Apparatus for connecting a precast deck slab with a beam on a bridge and method for connecting the slab with the beam using the same Jan. 25, 2011
7870628 Enhanced girder system Jan. 18, 2011
7827642 Hollow prestressed concrete (HPC) girder and spliced hollow prestressed concrete girder (s-HPC) bridge construction method Nov. 9, 2010
7627921 Girder system employing bent steel plating Dec. 8, 2009
7571577 Blast protective barrier system Aug. 11, 2009
7475446 Bridge system using prefabricated deck units with external tensioned structural elements Jan. 13, 2009
7448103 Enhanced girder system Nov. 11, 2008
7421825 Doubly prestressed roof-ceiling construction with grid flat-soffit for extremely large spans Sep. 9, 2008
7418804 Floor structure Sep. 2, 2008
7373760 Floor structure May. 20, 2008
7373683 Construction method for prestressed concrete girder bridges May. 20, 2008
7367075 Girder bridge protection device using sacrifice member May. 6, 2008
7240389 Method of constructing partially earth-anchored cable-stayed bridge using thermal prestressing technique Jul. 10, 2007
7069614 Modular span multi-cell box girder bridge system Jul. 4, 2006
7003837 Bridge construction system Feb. 28, 2006
6857156 Modular bridge structure construction and repair system Feb. 22, 2005
6751821 Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge Jun. 22, 2004
6493895 Truss enhanced bridge girder Dec. 17, 2002
6470524 Composite bridge superstructure with precast deck elements Oct. 29, 2002
6381793 Composite deck system and method of construction May. 7, 2002
6151743 Structural panel for bridging between spaced supports Nov. 28, 2000
6145270 Plasticon-optimized composite beam system Nov. 14, 2000
6081955 Modular polymer matrix composite support structure and methods of constructing same Jul. 4, 2000
6055693 Railway short span trestle bridge May. 2, 2000
6023806 Modular polymer matrix composite support structure and methods of constructing same Feb. 15, 2000
6018834 Method for building a bridge and bridge built according to said method Feb. 1, 2000
6003183 Modular bridge section Dec. 21, 1999
5966764 Roll beam girder system for bridges Oct. 19, 1999
5920937 Covering apparatus for concrete bridge beams and pillars Jul. 13, 1999
5893187 Reinforcing structure for hinge section of gerber bridge Apr. 13, 1999
5870789 Precast bridges Feb. 16, 1999

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