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    Author(s): P. D. Hilbrich Lee; M. A. Ritter; S. Golston; K. Hinds
    Date: 1984
    Source: (Research paper FPL ; RP-564):21 p. : ill., maps ; 28 cm.
    Publication Series: Research Paper (RP)
    Station: Forest Products Laboratory
    PDF: Download Publication  (993 KB)


    The Dean, Hibbsville, and Decatur bridges were constructed in southern Iowa during 1994. Each bridge is a simple-span, stress-laminated deck superstructure, approximately 7.3 m (24 ft) long, constructed from eastern cottonwood lumber. The performance of each bridge was monitored for approximately 2 years, beginning shortly after installation. Monitoring involved collecting and evaluating data pertaining to the moisture content and vertical creep of the wood decks, the force level of the stressing bars, and the behavior of the bridges under static load conditions. In addition, comprehensive visual inspections were conducted to assess the overall condition of the structure. Based on field evaluations, the bridges are performing well with minor serviceability deficiencies.

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    Hilbrich Lee, P. D.; Ritter, M. A.; Golston, S.; Hinds, K. Field performance of timber bridges. 14, Dean, Hibbsville, and Decatur stress-laminated deck bridges. (Research paper FPL-RP-564):21 p. : ill., maps ; 28 cm.


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    Bridges, Structural timbers, Laminated wood, Stress analysis, Performance, Construction technology, Iowa, Stress lamination, Bridge decks

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