Within SHA, Asset Management entails taking a strategic approach to better manage our physical transportation infrastructure based upon asset condition data and performance expectations. Our goal is to obtain the best results, or performance, for the preservation, improvement, and operation of infrastructure assets given the resources available. The Asset Management Dashboard showcases the conditions of our bridges and pavement, as well as our system preservation and rehabilitation efforts.
The Asset Management Dashboard addresses the following:
2014 Roadway and Bridge Maintenance goals:
SHA measures the condition of pavement annually to support strategic project engineering which provides the highest benefit to cost ratio. In some instances, it is more beneficial to invest in roads that are in fair-to-good condition and improve them to very good condition, rather than to invest only in roads that are in poor condition. A road that is in poor condition costs considerably more to repair, and the repair work inconveniences the public for a longer time. In fact, costs increase exponentially as pavement condition deteriorates. By maintaining the majority of our major-roadway network in fair or better condition, funding is programmed cost effectively with reduced construction impact on the traveling public.
This pie chart provides a summary of the number and percent of the total bridges by status (Fair or Better or Structurally Deficient) for 2014. The information in the table is taken from April 2014 submission to FHWA..
A bridge is considered Structurally Deficient if:
1) any of its significant load carrying elements are found to be in a poor condition due to deterioration and/or damage;
2) it has a low weight restriction; or
3) the adequacy of the waterway opening provided by the bridge is determined to be extremely insufficient to the point that roadway flooding causes intolerable traffic interruptions.
The Structurally Deficient rating, which is a result of an in-depth hands-on bridge inspection, is an early warning sign for engineers to use to prioritize funding and to initiate repairs or to begin the process to rehabilitate or replace the bridge.
The rating applies to three main elements of a bridge:
1) the deck (riding surface);
2) the superstructure (main supporting element of the deck, usually beams, girders, trusses, etc.); and
3) the substructure (supports that hold up the superstructure and deck, usually abutments and piers). These elements are rated on a scale from zero (closed to traffic) to nine (relatively new). If any of the three elements is rated as a four or less, the bridge is categorized as structurally deficient by federal standards. This does not mean that the bridge is unsafe. If a bridge becomes unsafe, it will be closed.
A bridge is categorized as Fair or Better if all three elements are rated as a five or higher.
What is SHA doing to improve pavement quality on our highway system?
What is SHA doing to address structurally deficient bridges on our highway system?
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