Microfiche. Des Moines, Iowa : Distributed by Iowa Depository Library Center, State Library of Iowa, Distributed by Iowa Depository Library Center, State Library of Iowa, 1989. 1 microfiche : negative.
"March 1989." Construction report for Iowa Highway Research Board project HR-312.
Summary:
Research initiated in 1988 to study the effectiveness of four different construction techniques for establishing a stable base on a granular surfaced roadway. After base stabilization, the roadway was then seal coated. When monies become available, the roadway can be surfaced with a more permanent structure. A 2.8 mile section of the Horseshoe Road in Dubuque County was divided into four divisions for this study.
OCLC:
(OCoLC)20610044
Locations:
USUX851 -- Iowa State University - Parks Library (Ames)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.