01515649

Component

This paper investigates the effects of varying two different elements of bridge management strategies. The first element was a trigger value (a National Bridge Inventory (NBI) condition rating for a bridge component) at which a maintenance treatment can be performed. The second element was the budget. A new software program, the Bridge Management Research Software (BMRS), was created to test these elements of bridge management strategies for Indiana’s bridge network. To test variations in the trigger values, three different bridge management strategies were proposed: a Standard maintenance strategy, an Early maintenance strategy, and a Late maintenance strategy. Each maintenance strategy is based on a set of bridge component condition rating values that serve as “triggers” for identifying bridges eligible for maintenance. In the Early maintenance strategy, the trigger values are higher; in the Late maintenance strategy, the trigger values are lower. The impacts of these maintenance strategies were tested under three different annual budget levels: $150 million budget, $200 million budget, and $250 million. Each bridge management strategy was evaluated in three ways. Distribution analysis looks at how many bridges end up at each condition rating. Threshold analysis indicates many bridges have ratings greater than or equal to a given component condition rating. Index analysis shows how well each maintenance strategy performs under a combination of criteria. This study found that, for any of the three budget levels, the Standard maintenance strategy leads to better systemwide bridge performance than either the Early or Late maintenance strategies.

This paper was sponsored by TRB committee AHD35 Bridge Management. Alternate title: Evaluation of Bridge Maintenance Strategies Under Budget Constraints

01503729

14-3414

English

9p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; References; Tables

Bridge management systems; Budgeting; Evaluation; Software

Indiana

Bridges and other structures; Finance; Highways; Maintenance and Preservation; I10: Economics and Administration; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2014 Paper #14-3414

TRIS, TRB, ATRI

Jan 27 2014 3:11PM