A transportation infrastructure maintenance management system (TIMMS) for a small urban city is developed. Uintah, Utah, year 2005 population 2,000, is studied. As of Fall 2001, this suburb of the Salt Lake CityOgden urban area featured 12km of paved roads, 133 traffic signs, 18 street lights, pavement markings, and other transportation infrastructure. A part-time city engineer was responsible for maintaining the transportation and other infrastructure. A formal TIMMS was not in place. A TIMMS emphasizing preventive maintenance on all infrastructure, along with corrective maintenance on all pavements, was estimated to require about 79% of the city engineers time, at an annual cost of about $88,000, or $7,330∕km of road (2002$). About 75% of the expenses would be devoted to pavement preservation. The cost would exceed the citys estimated transport maintenance budget ($55,775) by about 58%, while the time required of the engineer might exceed that available. A simple linear programming TIMMS formulation is developed. One heuristic solution would be to implement a scheduled maintenance program on all transport infrastructure, and corrective pavement maintenance on one major collector street. These two programs would consume the entire $55,775 budget. The budget shortfall may be indicative of a general lack of adequate funding for infrastructure maintenance in the United States. The time shortfall indicates a need for additional manpower. Further study is needed to determine how best to prioritize maintenance actions, optimize maintenance resources, and identify supplemental funding sources.
Wayne D Cottrell, Stephen Bryan, Bhargava Rama Chilukuri, Vikram Kalyani, Aleksandar Stevanovic, Junxia Wu. (2009). Transportation Infrastructure Maintenance Management: Case Study of a Small Urban City. Journal of Infrastructure Systems, 15(2)