Estimating Highway Preconstruction Services Costs - Volume 1: Guidebook

Gransberg, Douglas D.; Jeong, Hae‐Kwon; Craigie, Emily K.; Rueda-Benavides, Jorge A.; Shrestha, Kishor

doi:10.17226/23590

Cited by 3 publications

(7 citation statements)

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Section: Literature Reviewmentioning

confidence: 99%

“…Scoping cost estimates employ a historical percentage of the estimated construction costs, cost per parameter (e.g., cost per lane mile), total dollar value, work-effort hours, or statistical modeling techniques ( 3 , 4 ). The historical percentage of construction cost (POCC) method is a popular PE cost estimation method for DOTs ( 4 ). This method calculates an average percentage of PE cost relative to construction cost of past projects and applies the value to estimate the PE costs of future projects.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The strength of this method is its ease of use; it does not require complex calculations and modeling techniques. However, both the accuracy and reliability of the POCC method have been questioned since the use of a single number regardless of project characteristics may result in the under- or over-allocation of PE funding ( 4 , 14 , 15 ).…”

Section: Literature Reviewmentioning

confidence: 99%

“…Project size and type are essential factors when estimating PE costs. Gransberg et al ( 4 ) identified project complexity, project type, and construction cost, among others, as key factors influencing the preconstruction service costs of highway projects. Persad et al ( 13 ) found that the PE cost ratio is negatively correlated with the construction cost.…”

Section: Literature Reviewmentioning

confidence: 99%

“…To secure that federal funding, state departments of transportation (DOTs) need to estimate PE costs accurately and reliably during the planning phase ( 3 ). Timely and accurate estimates of PE costs also provide DOT management with an important basis for decision-making ( 4 ). However, PE cost estimation is not an easy task during the planning phase because of the limited availability of project information.…”

mentioning

confidence: 99%

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Developing a Preliminary Engineering Cost Estimation Method for a Portfolio of Bridge Construction Projects in Project Planning Phase

Son

Khwaja

2022

Transportation Research Record

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For state departments of transportation (DOTs), estimating preliminary engineering (PE) costs over a multiple-year horizon is critical for proper planning of engineering resources and budgets to ensure timely delivery of a portfolio of bridge construction projects, which incur PE costs that are relatively higher than those required for other highway project types. However, given the uncertainties in the planning phase, it is challenging to estimate PE costs effectively and efficiently. The purpose of this study was to provide DOTs with a PE cost estimation method using different ratios of PE cost to construction cost for bridge projects by project type and size. To that end, the study tested the variability of PE costs by analyzing 628 Texas DOT bridge construction projects divided into three project types: bridge maintenance (BMN), bridge replacement (BR), and bridge widening and rehabilitation (BWR). The analysis found that the ratios of PE cost to construction cost for the BMN and BR project types were significantly different by project size, but was not conclusive for the BWR project type because of limited sample size. The validation results indicate that the proposed method is effective for planning and estimating the PE costs of a portfolio of projects. The study findings can provide DOTs with an improved PE cost estimation process for a portfolio of bridge projects during the project planning phase.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Developing a Preliminary Engineering Cost Estimation Method for a Portfolio of Bridge Construction Projects in Project Planning Phase

Son

Khwaja

2022

Transportation Research Record

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ANN-based estimation model for the preconstruction cost of pavement rehabilitation projects

Shehab,

Blampied,

Nasr

et al. 2023

International Journal of Construction Management

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Comparison of State Department of Transportation Practices in Analyzing Risks for Large Infrastructure Projects

Shrestha,

Fielden,

Uddin

EPiC Series in Built Environment

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Construction projects are inherently associated with various risks that can increase the project costs. Identifying and analyzing such risks are essential to successfully managing construction budgets at state Departments of Transportation (DOTs). While many state DOTs have developed and/or adopted risk assessments methodologies and tools, Tennessee DOT (TDOT) lacks a comprehensive methodology and tool to analyze construction project risks. This study reviewed state DOT practices of analyzing various risks associated with large infrastructure construction projects. The comparison of risk assessment practices among state DOTs are summarized in three sections: a) risk management, b) major categories affecting project costs, and c) risk estimating tools and practices. The review finds that many state DOTs have similar practices of analyzing project risks and have developed spreadsheet-based tools to automate such analysis. While some risk analysis tools are used primarily for qualitative risk analysis, other tools are developed for qualitative and quantitative risk analysis. Such tools with qualitative and quantitative risk analysis can be used to quantify contingencies for various projects for budgeting purposes.

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Estimating Highway Preconstruction Services Costs - Volume 1: Guidebook

Cited by 3 publications

References 0 publications

Developing a Preliminary Engineering Cost Estimation Method for a Portfolio of Bridge Construction Projects in Project Planning Phase

Developing a Preliminary Engineering Cost Estimation Method for a Portfolio of Bridge Construction Projects in Project Planning Phase

ANN-based estimation model for the preconstruction cost of pavement rehabilitation projects

Comparison of State Department of Transportation Practices in Analyzing Risks for Large Infrastructure Projects

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