Search results
Results from the WOW.Com Content Network
The use of emplaced logs is now sometimes used in temporary bridges used for logging roads, where a forest tract is to be harvested and the road then abandoned. Such log bridges have a severely limited lifetime [ 3 ] due to soil contact and subsequent rot and wood-eating insect infestation.
The expense of rail led to the bridges' unusual steel construction; while most logging bridges were temporary wooden structures, the Simpson Logging Company felt that only a permanent bridge would justify their investment. The bridge was converted to a roadway in 1964, though it continues to be used for logging. [2]
A Bailey bridge is a type of portable, pre-fabricated, truss bridge. It was developed in 1940–1941 by the British for military use during the Second World War and saw extensive use by British, Canadian and American military engineering units. A Bailey bridge has the advantages of requiring no special tools or heavy equipment to assemble.
A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...
A Mabey Logistic Support Bridge, Tikrit, Iraq The Mabey Logistic Support Bridge (in the United States, the Mabey-Johnson Bridge) is a portable pre-fabricated truss bridge, designed for use by military engineering units to upgrade routes for heavier traffic, replace civilian bridges damaged by enemy action or floods etc., replace assault and general support bridges and to provide a long span ...
The bridge was shut down on Tuesday, blocking a highway used by thousands of Morris and Sussex county travelers every day. Temporary bridge to reopen Route 15 will take 6 weeks to build, NJ says ...
Overall, NCDOT estimates it will cost roughly $5 billion to restore state roads, bridges and other transportation infrastructure damaged by Helene, according to Emily McGraw, the director of ...
New Youngs Bay Bridge: Youngs Bay: 1966 4209 Bypassed the Lewis and Clark River Bridge (1924, 828 ft (252 m), Lewis and Clark River) and Old Youngs Bay Bridge (1921, 1766 ft), both designed by Conde McCullough [7] and now on US 101 Business. Is a vertical-lift bridge. 0.00 Astoria-Megler Bridge: Columbia River: 1966 21474 [9] Designed by ...