TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 425: Waterproofing Membranes for Concrete Bridge Decks documents information on materials, specification requirements, design details, application methods, system performance, and costs of waterproofing membranes used on new and existing bridge decks since 1995.
The synthesis focuses on North American practices with some information provided about systems used in Europe and Asia.
NCHRP Synthesis 425 is an update to NCHRP Synthe[more]
TRB's National Cooperative Highway Research Program (NCHRP) Report 693: Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and Management provides guidance designed to help transportation agencies recruit and retain qualified professional staff in the systems operation and management (SOM) area.
The report explores SOM career paths, skill requirements, and training needs and identifies successful programs, state-of-the-art initiatives, and best industry practices.
A set of tables showing SOM job categories, number of positions, and ed
TRB's second Strategic Highway Research Program (SHRP 2) Report S2-L06-RR-1: Institutional Architectures to Improve Systems Operations and Management examines a large number of topics concerning organizational and institutional approaches that might help transportation agencies enhance highway operations and travel time reliability.
The same project that produced SHRP 2 Report S2-L06-RR-1 also produced SHRP 2 Report S2-L06-RR-2: Guide to Improving Capability for Systems Operations and Management.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 423: Long-Term Performance of Polymer Concrete for Bridge Decks addresses a number of topics related to thin polymer overlays (TPOs).
Those topics include previous research, specifications, and procedures on TPOs; performance of TPOs based on field applications; the primary factors that influence TPO performance; current construction guidelines for TPOs related to surface preparation, mixing and placement, consolidation, finishing, and curing; repair procedures; factors that influence the performance of overlays,
TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 365: Sustainable Pavement Maintenance Practices highlights the current practice in sustainable pavement maintenance and preservation.
The report is designed to help quantify and understand how pavement maintenance and preservation practices minimize environmental impacts.
As part of the development of this report, a general survey on sustainable pavement preservation and maintenance practices was issued to the state and provincial maintenance engineers in the United States and Canada. The
TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R26-RR-1: Preservation Approaches for High-Traffic-Volume Roadways documents the state of the practice of preservation treatment on asphalt and concrete pavements on high- and low-volume roadways.
The report also report includes general guidelines on the application of preservation treatments on high-volume roadways.
The same project that produced SHRP 2 Report S2-R26-RR-1 also produced SHRP 2 Report S2-R26-RR-2: Guidelines for th[more]
TRB's Innovations Deserving Exploratory Analysis (IDEA) Report 148: Cleaning Device to Remove Debris and Chemicals for Crack/Joint Sealing explores development of a tool designed to efficiently remove deicing chemical buildup and prepare pavement cracks and joints for sealing.
TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 364: Validation of LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems summarizes the results of research to further validate some key results of a project that resulted in publication of NCHRP Report 675: LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems.
NCHRP Report 675 explores the development of metal loss models for metal-reinforced systems that ar
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 417: Geometric Design Practices for Resurfacing, Restoration, and Rehabilitation documents the current state-of-the-practice related to nonfreeway resurfacing, restoration, and rehabilitation projects.
Appendix G, Summary of Good Practices: Incorporating Safety into Resurfacing and Restoration Projects, to NCHRP Synthesis 417 is only available as part of the electronic version of the report.
TRB's National Cooperative Highway Research Program (NCHRP) Report 688: Determining Highway Maintenance Costs presents a process for determining a highway agency's full costs associated with performing highway maintenance.
The process described in the report can be applied to any specific maintenance activity and is designed to help ensure that the resulting full cost incorporates a fair share of both maintenance program and enterprise support costs.
The report also documents the application of the full-cost determination process for a number of highway agencies and diffe