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This list of the longest arch bridge spans ranks the world's arch bridges by the length of their main span. The length of the main span is the most common way to rank bridges as it usually correlates with the engineering complexity involved in designing and constructing the bridge. [ 1 ]
The 354-foot-long (108 m) stone arch bridge spans 80 feet (24 m) with a 30-foot-high (9.1 m) arch and a roadway width of 48 feet (15 m). [8] [9] The bridge was constructed in 1813–1814 to aid in the westward movement through the frontier wilderness west of Cumberland, Maryland.
was concurrent with MD 28 from Martinsburg Road to Mt. Ephraim Road MD 420 — — Goshen Road in Goshen: Sundown Road east of Laytonsville: 1930: 1973 section from Goshen Road to MD 124 removed 1959 MD 421 — — MD 190 near Travilah: Glen Road near Travilah: 1930: 1959 MD 422: 3.04: 4.89 Bayard: MD 2 / MD 408 in Lothian — — MD 423
View north along MD 903 and west along US 40 Scenic at I-68/US 40 near Sideling Hill. Maryland Route 903 is the unsigned designation for a 0.91-mile (1.46 km) section of Mountain Road on the western slope of Sideling Hill in far western Washington County from the Exit 74 exit ramp from eastbound I-68 north to the Exit 74 entrance ramp to westbound I-68.
It is 51 feet 9 inches (15.8 m) above Gwynns Falls. It consists of a full-centered arch with a clear span length of 80 feet (24 m) over the stream, and a space for two railroad tracks on its deck. To provide an underpass for a wagon road, an arched passageway, 16 feet (5 m) in width, was built through one of the masonry-walled approaches.
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MD 144HB is the designation for Twin Arch Road, a 0.12-mile (0.19 km) service road that runs from the Patapsco River east to an intersection with county-maintained Twin Arch Road between I-70 to the south and the namesake double-arch bridge that carries CSX's Old Main Line Subdivision. [1] [24]
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