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Life Cycle Cost of Local Roads

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Date Created
2020
Report Number
TRS2002
Description
The scope of this Transportation Research Synthesis (TRS) addressed the following: (1) Identify how agencies are communicating the cost of maintaining their roadway infrastructure to their elected officials and the public. (2) Identify what life cycle cost analysis (LCCA) methods and tools are currently being used by local and state agencies. (3) Identify what data elements are needed to conduct a LCCA on roadways and determine which of the data elements are annually submitted to State Aid.

Remote Sensing in Maintenance Work

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Date Created
2020
Report Number
TRS2005
Description
SRF Consulting Group worked with MnDOT in identifying specific uses for the remote sensing tools; a list of potential tools was generated; MnDOT reviewed and then developed a short list of five tools which SRF then investigated. This Transportation Research Synthesis presents the findings including information on tool applications and details for MnDOT's specific application including pros and cons of each.

Study of Bus-Only Shoulders

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Date Created
1997-06
Report Number
1998-06U
Description
The Minnesota Department of Transportation (Mn/DOT) collaborates with Team Transit to increase transit use and improve the efficiency of the metropolitan highway system by allowing buses to use the designated shoulders to bypass traffic congestion. In this project, researchers evaluated the costs and benefits associated with bus-only shoulder projects and concluded the following: • Measured travel time savings on the bus-only shoulders are highly variable, but savings run as high as nine minutes per trip under snowy conditions. • 60 percent of respondents indicated that, on a typical day, the use of shoulders by buses resulted in travel time savings of about 5 minutes. • Bus regard bus-only shoulders as a use and positive addition to their commute trip. • The number of accidents directly relating to bus use of shoulders is very low. • The 10-foot minimum requirement for bus-only shoulders is marginally adequate. The study concluded that the use of the bus-only shoulder concept should continue, with an evaluation of additional projects on a case-by-case basis. The report also presents additional suggestions regarding guidelines and criteria for projects. This report is unpublished. 15 copies were produced and distributed.

Base Stabilization Guidance and Additive Selection for Pavement Design and Rehabilitation

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Date Created
2017
Report Number
2017RIC02
Description
Significant improvements have been made in base stabilization practice that include design specifications and methodology, experience with the selection of stabilizing additives, and equipment for distribution and uniform blending of additives. For the rehabilitation of existing pavements the stabilization of base material has delivered performance as good as or better than reconstruction at a reduced cost. Many additive products exist to stabilize base materials for roadway construction, but it is not always clear which additive is the right one to use. This guidebook intends to focus on stabilization for new construction and Stabilized Full Depth Reclamation (SFDR) and to help with the selection of suitable nonproprietary stabilization additives for individual specific project(s).