Evaluation of Changes in Productivity Resulting from Removal of Soil for Highway Construction, HR-186, 1981

(1981) Evaluation of Changes in Productivity Resulting from Removal of Soil for Highway Construction, HR-186, 1981. Transportation, Department of


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Borrow areas are created where soil is removed to provide needed fill material for highway and other construction projects. Where these areas are located beyond the highway right-of-way, they must be restored and returned to useful purposes. In Iowa, borrow areas are often developed on agricultural lands and therefore, it is necessary to return them to agricultural uses whenever possible. This research project was established to evaluate the changes in row crop productivity where borrow is removed for highway construction. Secondly, several reclamation techniques were selected to be applied to borrow area research sites and the response of crops to each treatment will be evaluated. All borrow area research sites were selected in 1977 from Iowa Department of Transportation construction plans. The Audubon and Buchanan County sites were completed in the fall of 1977 and May 1978, respectively. Both were used for research in 1978, 1979, and 1980. The two remaining sites in Hamilton and Lee Counties were completed in the fall of 1978 and research was conducted at these sites in 1979, 1980, and 1981. In this report, the 1981 results from the Hamilton and Lee County borrow sites will be presented. Secondly, a summary of the three years of research from each borrow area will be presented along with specific and general conclusions from the research project.

Item Type: Departmental Report
Keywords: Components of embankments and retaining walls, Construction projects, Embankments, Fillers (Materials), Land reclamation, Land use, Soil tests
Subjects: Transportation
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Roads and highways
Transportation > Research
ID Code: 17311
Deposited By: Iowa DOT Library
Deposited On: 01 Jul 2014 11:36
Last Modified: 05 Feb 2015 19:53
URI: https://publications.iowa.gov/id/eprint/17311