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The 2013 interim contains updated information for the Manual for Bridge Evaluation, 2nd Edition (2010). It is necessary to have this and the 2011 interim to have all current specification information.

This Report, from NCHRP 08-36/Task 118, is on Performance Measures for State Infrastructure Preservation. It provides a roadmap with some guidance on the highest priorities for agencies to successfully apply performance-based preservation programming. The roadmap is broken into three tiers. Every transportation agency has a different level of maturity in data collection and analysis, asset management, performance management, target setting, and other activities which support performance-based preservation programming. The tiers are intended to provide guidance to those agencies with limited maturity, those with moderate maturity, and those with significant maturity in performance-based preservation programming.

The objective of this research was to develop a guidebook and tool prototype that senior DOT managers may use to analyze and communicate the likely system performance impact of investment decisions across multiple types of transportation assets. The guidebook includes a framework incorporating (a) the several dimensions of system performance important to stakeholders (such as mobility, safety, and community livability); (b) the multiple measures an agency uses to describe condition and service of particular classes of transportation-system assets (such as pavements, signals, and drainage structures); and (c) the targets that an agency may set for the various dimensions of performance.
The framework and tool prototype were developed under NCHRP Project 08-91 to reflect both technical best practices and transportation agency organizational and institutional needs.

This paper reports on performance measures being considered for flexible and rigid surfaced pavements and the threshold values for these measures. A survey was sent to members of the Joint Technical Committee on Pavements and 14 of 20 responded. The performance measures for flexible pavements included International Roughness Index (IRI), rutting and cracking. The performance measures for rigid pavements included IRI, patching, cracking, popouts, faulting, and damaged joints. For each measure, states were asked to define good, fair, and poor both for interstates and other National Highway System (NHS) routes. They were asked to define their system’s performance for given thresholds and for some information about how they collect, process, and use the data. States use rutting and cracking to assess performance of flexible pavements. IRI was the third ranked measure, but it is the measure that is consistently applied to both flexible and rigid pavements. Rutting measurements vary among the states due to the differing methods used to gather the data. These methods include 3-point sensors, 5-point sensors, line lasers, and 3-D cameras. Use of cracking as a performance measure will require consensus building about definitions, measurement methods, and thresholds. The survey responses for rigid pavements were limited to jointed plain concrete because 12 of the 14 states indicated that the majority of their rigid pavements are of this type. Additional work will be required for a faulting measure, because the ability to detect the joint is a function of the distance between consecutive traces. Development of definitions, methods, and thresholds will be required for other rigid pavement performance measures including patching, cracked slabs, and damaged joints.

An overview of the Chicago Transit Authority's plans for approaching adaptation to climate change.

This presentation outlines the development of the transit asset management system in place at the Utah Transit Authority.

A presentation on the NY MTA's approach to asset management. The presentation outlines their focus on Whole Life Asset Management and their vision for the agency.

A presentation on the asset management program at the Regional Transit Authority (RTA) in Chicago.

An overview of the development of asset management at the Utah Transit Authority, parallel to growth of the agency itself.

A presentation on the impact climate change will have on transit, and possible approaches to climate change risks.

This presentation describes the process of implementing an asset management program at SEPTA, a Legacy Transportation System. The presentation also illustrates the value of achieving a state of good repair and the process by which SEPTA prioritized their limited funds.

An overview of how entry points into TAM may facilitate integration of risk management, and assess vulnerability to extreme weather.