A 1,285-ft-long four-span steel plate girder Bridge is taking shape 180 ft above the Yellowstone river in Wyoming. Photo courtesy NPS/Jacob W. Frank. June 16, 2025.

One promising technique for the seismic design of highway bridges with steel superstructures is to dissipate energy through the inelastic deformation of the end cross frames. These so-called ductile ...

Keywords: Seismic performance. Steel plate girder bridges. Superstructures. Cyclic tests. Shaking table tests. Transverse seismic loads. Flexural-torsional response. Distribution. High seismicity.

To speed up design and construction for the replacement bridge, Caltrans turned to a 315-ft, two-lane, clear-span welded-steel-plate-girder design with a reinforced-concrete deck, similar to the ...

This steel plate girder swing bridge has significance as an example of a movable bridge. Its significance is demonstrated by the presence of distinctive engineering and design features of the ...

The 443-foot-long steel plate girder bridge, which was originally constructed during Duluth, South Shore & Atlantic railroad development, underwent a $803,000-project in May.

That’s where Casco Bay Steel plans to ship out the massive plate and box girders that it’s making for the $170 million Sarah Mildred Long Bridge replacement project, which Cianbro Corp. of ...

They then began the task of cutting exposed cross beams, stringer beams, steel sidewalks and steel median plates from the bridge’s superstructure, leaving only the steel girders, floor beams ...

Once the girders are in place, ironworkers will begin securing them with fasteners and steel plates. "There's a crane, and the crane will be down below on the ground.

Abstract: The end frames of steel plate girder bridges are critical elements in the transverse seismic load path of the superstructure. It has been suggested that if these cross frames were to yield ...