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Longer bridges can reduce the width of both shoulders to 4 feet (1.2 m). Existing bridges can remain part of the Interstate system if they have at least 12-foot-wide (3.7 m) lanes with 3.5-foot (1.1 m) shoulder on the left and a 10-foot (3.0 m) shoulder on the right, except that longer bridges can have 3.5 feet (1.1 m) shoulders on both sides.
West bridge: 704 m (2,310 ft) (x2) ... Length Type Carries Crosses Opened Location State Ref. 1: ... Commuter rail in North America;
Glen Canyon Dam Bridge: Colorado River: 1959: Arizona: Phil G. McDonald Bridge (Glade Creek Bridge) Glade Creek: 1988: West Virginia: 565 ft (172.2 m) Rio Grande Gorge Bridge: Rio Grande: 1965: New Mexico: 486 ft (148.1 m) Perrine Bridge: Snake River: 1976: Idaho: 470 ft (143.3 m) Navajo Bridge (dual spans; the 1929 span is 467 ft high ...
Bridge out (distance) miles ahead, local traffic only. R11-4 Road closed to thru traffic. R12 series: Weight limits. R12-1 Weight limit. R12-2 Axle weight limit. R12-4
Photo of Fernbridge bridge, now the longest reinforced concrete bridge still in use, then called Eel River bridge, Humboldt County, California, United States. c. 1912. Fernbridge (bridge), Fernbridge (near Ferndale) Foresthill Bridge, Auburn; Golden Gate Bridge, San Francisco Bay Area; Muir Trestle, Martinez
Bridge (no known official name) Parramatta: Northmead–Constitution Hill boundary: 18.2: 11.3: Old Windsor Road (A40 north) – Seven Hills, Rouse Hill, Windsor: Cumberland Highway continues west along Hart Drive Western terminus of concurrency with route A40: Wentworthville: 19.7: 12.2: Darcy Road – Westmead, Westmead and Children's hospitals
Planned or under construction bridges in the United States Pages in category "Proposed bridges in the United States" The following 15 pages are in this category, out ...
Cancelled bridge projects in the United States (4 P) D. Bridge disasters in the United States (74 P) F. Former bridges in the United States (7 C, 4 P) N.