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  2. Stepping stones - Wikipedia

    en.wikipedia.org/wiki/Stepping_stones

    Unlike bridges, stepstone crossings typically have no spans, although wood planks or stone slabs can be placed over between the stones (which serve as the piers) to improvise as low-water bridges. Although their historical origin is unknown, stepping stones, along with log bridges , are likely to have been among the earliest means of crossing ...

  3. Timber bridge - Wikipedia

    en.wikipedia.org/wiki/Timber_bridge

    The most ancient form of timber bridge is the log bridge, created by felling a tree over a gap needing to be crossed. [ citation needed ] Among the oldest timber bridges is the Holzbrücke Rapperswil-Hurden crossing upper Lake Zürich in Switzerland; the prehistoric timber piles discovered to the west of the Seedamm date back to 1523 B.C.

  4. Skew arch - Wikipedia

    en.wikipedia.org/wiki/Skew_arch

    Colorado Street Bridge, an example of a false skew arch. The strength of a regular arch (also known as a "square" or "right" arch) comes from the fact that the mass of the structure and its superincumbent load cause lines of force that are carried by the stones into the ground and the abutments without producing any tendency for the stones to slide with respect to one another.

  5. Low-water crossing - Wikipedia

    en.wikipedia.org/wiki/Low-water_crossing

    A low-water crossing (also known as an Irish bridge or Irish Crossing, causeway in Australia, low-level crossing or low-water bridge) is a low-elevation roadway traversing over a waterbody that stays dry above the water when the flow is low, but is designed to get submerged under high-flow conditions such as floods.

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  7. Pithole Stone Arch Bridge - Wikipedia

    en.wikipedia.org/wiki/Pithole_Stone_Arch_Bridge

    The Pithole Stone Arch Bridge is a segmental arch bridge, spanning 37 feet (11 m) over Pithole Creek. The bridge is unusual for its short span and a flat arch that rises only 6 feet 7 inches (2.0 m). Also unusual are the bridge's massive abutments and for its being well-built for only a rural backroad. [7]

  8. Gilliland-Reese Covered Bridge - Wikipedia

    en.wikipedia.org/wiki/Gilliland-Reese_Covered_Bridge

    The Gilliland-Reese Covered Bridge was constructed in 1899 by a crew under the direction of Etowah County Commissioner Jesse Gilliland...a Town Lattice truss made of rough-hewn lumber and covered with weathered shingles, originally located over Little Wills Creek at Gilliland Plantation in the vicinity of present-day Bethany Sitz Gap Road near Reece City (Coordinates (34.071572, -86.030742

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