Lattice girder
![Darcy Lever lattice girder railway bridge, Lancashire, England.](/Images/godic/202501/23/Darcy_Lever_-_geograph.org.uk_-_937941903.jpg")
![This example shows laced struts and ties. Pure tension eyebars are seen in the background (this is the cantilever portion of the old abandoned eastern span of the San Francisco–Oakland Bay Bridge).](/Images/godic/202501/23/San_Francisco_Oakland_Bay_Bridge_Retrofit_31903.jpg")
A lattice girder is a girder where the flanges are connected by a lattice web.
The lattice girder type of design has been supplanted in modern construction with welded or bolted plate girders, which use more material but have lower fabrication and maintenance costs. The lattice girder was used prior to the development of larger rolled steel plates.