01334249

Component

This paper discusses the results of an investigation into the construction practices of 19 fish passageways constructed by the Oregon Department of Transportation (ODOT), the intent of which are to avoid significantly disrupting the habitats for a healthy lifecycle for fish and other aquatic organisms. It is a complement to an earlier report of whether physical characteristics of these passageways are factors in success. The purpose of the overall investigation is to explore factors that may correlate with successful or unsuccessful passageways, potentially providing insight into more reliable and sustainable solutions to the problem of constructing highway crossings over natural waterways. This investigation obtained, through interview and archive study, information related to the construction practices of these fish passageways. The researchers collected information including programmatic practices, such as design focus, choice of construction entity, and frequency of site monitoring visits. Further, information related to the channel construction, such as specified gradation, fill source, fill mix methods, and fill consolidation were also discovered and compared to fish passageway success. Important findings of the first part of the study (as prior reported) included a relationship between downstream slope and scour; this study finds that the techniques of soil mixing, as well as methods of placement and consolidation tend to favor successful installations.

01329018

11-1113

English

14p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures (12) ; References (7)

Animal migrations; Channels (Waterways); Construction; Culverts; Fishes; Scour; Slopes; Streamflow; Streams

Fish passage; Passageways

Oregon

Bridges and other structures; Construction; Highways; I50: Construction and Supervision of Construction

Transportation Research Board Annual Meeting 2011 Paper #11-1113

TRIS, TRB

Feb 17 2011 5:41PM