01372846

Component

An integrated Drainage Identification, Analysis and Mapping System (DIAMS) was developed and implemented for the New Jersey Department of Transportation. The DIAMS serves as a vehicle for evaluating drainage infrastructure and facilitating the determination of present costs of preserving infrastructures. The DIAMS also maintains and summarizes accumulated inspection data of all infrastructure assets. Currently the DIAMS considers four separate assets types: pipes, inlet/outlet structures, outfalls and manufactured treatment devices. The DIAMS capabilities include identifying drainage infrastructure, maintaining inspection history, mapping locations, predicting service life based on the current condition states, and assessing present asset value. It also includes unit cost values of 72 standard items to estimate the current cost for new assets with the ability to adjust for future inflation. In addition, the DIAMS contains several different repair, rehabilitation and replacement options to remedy the drainage infrastructure. The DIAMS can analyze asset information and determine decisions to inspect, rehabilitate, replace or do nothing at the project and network levels. At the project level it compares costs with risks and failures. This is achieved by comparing inspection, cleaning or repair costs with risks and costs associated with failure. At the network level, the associated costs are optimized to meet annual maintenance budget allocations by prioritizing drainage infrastructure needing inspection, cleaning and repair. The DIAMS consists of three major computer software components: databases, user interfaces and functionality modules. Modules include data uploading, asset identification, system administration and financial analysis. Among the significant performance features of DIAMS is its proactive nature, which affords decision makers the means of conducting a comprehensive financial analysis to determine the optimal proactive schedule for the proper maintenance actions and to prioritize them accordingly. Benefits of DIAMs include long-term savings that accrue by adopting optimized preventive maintenance strategies and facilitating compliance with governmental accounting standards bureau (GASB-34) and federal storm water regulations.

This paper was sponsored by TRB committee AHD10 Maintenance and Operations Management

01362476

12-1605

English

18p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Condition surveys; Drainage structures; Rehabilitation; Service life; Unit costs

Drainage Identification, Analysis and Mapping System (DIAMS)

Highways; Hydraulics and Hydrology; Maintenance and Preservation; I26: Water Run-off - Freeze-thaw; I60: Maintenance

Transportation Research Board Annual Meeting 2012 Paper #12-1605

TRIS, TRB

Feb 8 2012 5:03PM