Volume 2 Highway Structures Design Substructures Material Section 2

TYPES OF TIMBER BRIDGES - Forest Products Laboratory

Forest Service and the Virginia State Highway Department, consists of a 3-1/8-inch deck supported by 4-1/2- by 20-inch press-lam beams, spaced 30 inches on center (Figure 2-9). Design requirements and stresses for LVL are not included in current bridge design specifications, but they may be adopted in the future.

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