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Journal of Advanced Transportation
Volume 2017, Article ID 9474838, 11 pages
https://doi.org/10.1155/2017/9474838
Research Article

Developing an Optimization Model to Manage Unpaved Roads

1Department of Civil & Architectural Engineering, University of Wyoming, Office EN 2094, Department 3295, 1000 E. University Ave, Laramie, WY 82071, USA
2Wyoming Technology Transfer Center, Department 3295, 1000 E. University Avenue, Laramie, WY 82071, USA

Correspondence should be addressed to Khaled Ksaibati; ude.oywu@delahk

Received 9 May 2017; Accepted 9 July 2017; Published 20 September 2017

Academic Editor: Sara Moridpour

Copyright © 2017 Promothes Saha and Khaled Ksaibati. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

While approximately two-thirds of the total centerline miles are unpaved in the state of Wyoming, there is no optimization program for managing these roads. Unlike paved roads, unpaved roads deteriorate from excellent to failed conditions in sometimes less than a year. This deterioration rate necessitates developing a novel methodology for managing them efficiently. When funding is limited, it is important to identify the best mix of road preservation projects that provides the most benefits to society in terms of overall life cycle cost of the road network. This research intends to develop a management system using optimization techniques for managing unpaved roads within limited budget. The common factors that play the most important role for identifying projects are road condition parameters, unpaved road deterioration model, treatment types, cost-factors associated with selecting treatment types, traffic counts, budget, and treatment cost. Road condition parameters include cross section, roadside drainage, rutting, potholes, loose aggregate, dust, corrugation, and ride quality. This methodology will facilitate a statewide implementation of unpaved road management system for counties in Wyoming. The methodology can be easily adopted by other states interested in the management of gravel roads.