Rossmiller, R. L., & Dougal, M. D. (1974). A computerized method for the hydrologic design of culverts (Report No. ISU-ERI-AMES-74029). Iowa State University. https://rosap.ntl.bts.gov/view/dot/23077
Rossmiller, Ronald L. and Merwin D. Dougal. A computerized method for the hydrologic design of culverts. Report no. ISU-ERI-AMES-74029. Iowa State University, 1974. https://rosap.ntl.bts.gov/view/dot/23077.
Rossmiller, Ronald L., and Merwin D. Dougal A computerized method for the hydrologic design of culverts. Iowa State University, 1974, Report no. ISU-ERI-AMES-74029, ROSA P. https://rosap.ntl.bts.gov/view/dot/23077.
Nationwide, about five cents of each highway construction dollar is
;
spent on culverts. In Iowa, average annual construction costs on the
;
interstate, primary, and federal-aid secondary systems are about
;
$120,000,000. Assuming the national figure applies to Iowa, about
;
$6,000,000 are spent on culvert construction annually. For each one percent
;
reduction in overall culvert costs, annual construction costs would
;
be reduced by $60,000.
Rossmiller, R. L., & Dougal, M. D. (1974). A computerized method for the hydrologic design of culverts (Report No. ISU-ERI-AMES-74029). Iowa State University. https://rosap.ntl.bts.gov/view/dot/23077
Rossmiller, Ronald L. and Merwin D. Dougal. A computerized method for the hydrologic design of culverts. Report no. ISU-ERI-AMES-74029. Iowa State University, 1974. https://rosap.ntl.bts.gov/view/dot/23077.
Rossmiller, Ronald L., and Merwin D. Dougal A computerized method for the hydrologic design of culverts. Iowa State University, 1974, Report no. ISU-ERI-AMES-74029, ROSA P. https://rosap.ntl.bts.gov/view/dot/23077.
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