14 research outputs found

    Evaluation, Comparison, and Improvement Recommendations for Caltrans Financial Programming Processes and Tools

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    The California Transportation Improvement Program System (CTIPS) is the main tool used by Caltrans’ Division of Financial Programming to support the business of transportation programming. It is a multi-agency joint-use project programming database system applied to develop and manage various state and federal transportation programming documents. The goal of this project is to evaluate CTIPS and explore various new options that will maintain the current functionality of CTIPS, meet legislative guidelines for ADA compliance, ensure security of the system, and have sufficient scalability and capabilities for integration with other systems in the future. The research is based on the review of current and historical documents, interviews, and surveys of the customers of the Division of Financial Programming; the survey of programming systems used by the other 49 states and District of Columbia (DC) in the U.S.; an interview with the CTIPS service support provider; and interviews and surveys of the software companies that provide services and products similar to CTIPS. This research identifies risks associated with CTIPS and opportunities for improvements; compares the processes in California with currently recognized best practices and with those used in the other states in the U.S.; and makes recommendations for the improvement of CTIPS. Research results could help Caltrans better capture current data needs and future analytics requirements and make an informed decision about modernizing and upgrading an essential programming database

    Preconstruction Support Cost Hours Estimating on Caltrans Pavement Rehabilitation Projects

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    Because the construction phase accounts for the majority of project costs for pavement rehabilitation projects, most research on infrastructure project cost estimating focuses on that phase, rather than on the preconstruction phases. Nevertheless, costs incurred prior to construction, referred to in this report as preconstruction costs are significant and worthy of consideration (See Section 2.1 of the report for a more detailed and precise definition of preconstruction). In the 20202021 fiscal year, for instance, the California Department of Transportation (Caltrans) spent more than $169 million on preconstruction work for pavement rehabilitation projects. This report presents the results of a study of preconstruction cost estimating for pavement rehabilitation projects undertaken by Caltrans. It uses data on the 139 pavement rehabilitation projects for which Caltrans opened bids in the five-year period from April 26, 2016 to May 11, 2021. A data set was developed that combined the preconstruction hours for each project with the primary bid items for the pavement rehabilitation projects. Two models were developed to estimate preconstruction hours from the bid items, one using an Artificial Neural Network (ANN) and the other a parametric exponential model developed using multiple regression. The models had coefficients of determination of 0.85 and 0.80, respectively. Tools were then developed to assist professional users in validating their preconstruction cost estimates using each of the models. CTC staff or Caltrans can use these tools to evaluate the reasonableness of the preconstruction estimate on an individual project, or on the sum of an entire biennial SHOPP pavement rehabilitation portfolio, in order to assure the most efficient use of infrastructure funding to best serve the community\u27s transportation needs

    Survey of Building Information Modeling for Infrastructure (BIM4I)

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    The rapid development of information technologies is transforming how data and information are produced, shared, exchanged, and managed. This transformation is accelerating in state departments of transportation (DOTs) across the country due to the pressing need for efficient means of delivering transportation projects and an enhanced need for internal and external collaboration. A key driver for this transformation is the implementation of Building Information Modeling for Infrastructures (BIM4I). The primary objective of this research was to develop actionable recommendations for DOTs to facilitate the effective adoption of BIM4I, based on national and international lessons learned and best practices. A four-step methodology was employed including: (1) a literature review identified key stakeholders and best practices; (2) data collection targeting transportation agencies included a survey of 94 participants and 18 follow-up interviews; (3) data analysis utilized statistical and content analysis to extract themes and insights; and (4) tailored recommendations were formulated based on findings. Main recommendations include: • Strategic Planning: Establish a clear definition of Building Information Modeling (BIM), create an implementation plan including a roadmap with defined objectives, and assess organizational readiness for BIM adoption. • Standardization and Training: Develop clear standards and guidelines for BIM usage, prioritize data quality, and invest in training. • Technology Integration: Ensure that BIM tools and software are compatible with existing systems and establish a user-friendly Common Data Environment (CDE) for effective data sharing. • Collaboration and Communication: Foster interdepartmental and cross-stages collaboration and engage stakeholders early in the design process to enhance understanding of project impacts. Recommendations from this research will help DOTs transitioning to digital delivery to enhance efficiency, collaboration, and project outcomes, providing a framework for effective BIM integration

    Evaluation, Comparison, and Improvement Recommendations for Caltrans Financial Programming Processes and Tools

    Get PDF
    65A0660The California Transportation Improvement Program System (CTIPS) is the main tool used by Caltrans\u2019 Division of Financial Programming to support the business of transportation programming. It is a multi-agency joint-use project programming database system applied to develop and manage various state and federal transportation programming documents. The goal of this project is to evaluate CTIPS and explore various new options that will maintain the current functionality of CTIPS, meet legislative guidelines for ADA compliance, ensure security of the system, and have sufficient scalability and capabilities for integration with other systems in the future. The research is based on the review of current and historical documents, interviews, and surveys of the customers of the Division of Financial Programming; the survey of programming systems used by the other 49 states and District of Columbia (DC) in the U.S.; an interview with the CTIPS service support provider; and interviews and surveys of the software companies that provide services and products similar to CTIPS. This research identifies risks associated with CTIPS and opportunities for improvements; compares the processes in California with currently recognized best practices and with those used in the other states in the U.S.; and makes recommendations for the improvement of CTIPS. Research results could help Caltrans better capture current data needs and future analytics requirements and make an informed decision about modernizing and upgrading an essential programming database

    Preconstruction Support Cost Hours Estimating on Caltrans Pavement Rehabilitation Projects

    Get PDF
    ZSB12017-SJAUXBecause the construction phase accounts for the majority of project costs for pavement rehabilitation projects, most research on infrastructure project cost estimating focuses on that phase, rather than on the preconstruction phases. Nevertheless, costs incurred prior to construction, referred to in this report as "preconstruction costs" are significant and worthy of consideration (See Section 2.1 of the report for a more detailed and precise definition of preconstruction). In the 2020\u2013 2021 fiscal year, for instance, the California Department of Transportation (Caltrans) spent more than $169 million on preconstruction work for pavement rehabilitation projects. This report presents the results of a study of preconstruction cost estimating for pavement rehabilitation projects undertaken by Caltrans. It uses data on the 139 pavement rehabilitation projects for which Caltrans opened bids in the five-year period from April 26, 2016 to May 11, 2021. A data set was developed that combined the preconstruction hours for each project with the primary bid items for the pavement rehabilitation projects. Two models were developed to estimate preconstruction hours from the bid items, one using an Artificial Neural Network (ANN) and the other a parametric exponential model developed using multiple regression. The models had coefficients of determination of 0.85 and 0.80, respectively. Tools were then developed to assist professional users in validating their preconstruction cost estimates using each of the models. CTC staff or Caltrans can use these tools to evaluate the reasonableness of the preconstruction estimate on an individual project, or on the sum of an entire biennial SHOPP pavement rehabilitation portfolio, in order to assure the most efficient use of infrastructure funding to best serve the community's transportation needs
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