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Beam bridges are the simplest structural forms for bridge spans supported by an abutment or pier at each end. [1] No moments are transferred throughout the support, hence their structural type is known as simply supported. The simplest beam bridge could be a log (see log bridge), a wood plank, or a stone slab (see clapper bridge) laid
I-beam stringer Chicagon Mine Road–Chicagon Creek Bridge: 1910 1999-12-17 Bates Township: Iron: Concrete slab bridge County Road 557–West Branch Escanaba River Bridge: ca. 1928: 1999-12-17 Wells Township
The Cottonwood Creek Bridge is a bridge in Fallon County, Montana near the town of Ismay, built in 1934. It was listed on the National Register of Historic Places in 2014. From 1926 to 1941, at least 1,242 timber stringer bridges were built in Montana; this is one of very few intact surviving bridges.
South Fork of Milk River Bridge Extant Reinforced concrete closed-spandrel arch: 1928 2017 US 89: Milk River south fork Kiowa Glacier: MT-173: Yellowstone River Bridge Extant Pratt truss: 1930 2017 Twin Bridges Road Yellowstone River
Falsework parallel truss bridges temporarily supporting deck segment box structures Overpass under construction over Interstate 5 in Burbank, California, in July 2021 [4] [5] Sixth Street Viaduct Falsework - Bent 11 Jump Span. Shown in the background is a concrete Y-Arm.
Reinforced Concrete Bridges in Montana, 1900–1958 MPS: Dearborn River High Bridge: 1897 2003-12-18 Augusta: Lewis and Clark: Pratt half-deck truss Flathead River Bridge: 1912 2010-7-17 Columbia Falls vicinity: Flathead: Forsyth Bridge: 1905, 1939
A simple suspension bridge (also rope bridge, swing bridge (in New Zealand), suspended bridge, hanging bridge and catenary bridge) is a primitive type of bridge in which the deck of the bridge lies on two parallel load-bearing cables that are anchored at either end. They have no towers or piers.
There are five authentic covered bridges in the U.S. state of Washington, though none of them are historic. [1] A covered bridge is considered authentic not due to its age, but by its construction. An authentic bridge is constructed using trusses rather than other methods such as stringers, a popular choice for non-authentic covered bridges.