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C-1 Source Anderson, S., K. Molenaar, and C. Schexnayder (2007a). NCHRP Report 574: Guidance for Cost Estimation and Management for Highway Projects During Planning, Programming, and Pre- construction, TRB. http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_574.pdf A P P E N D I X C Project Development Phases
C-2 Procedures Guide for Right-of-Way Cost Estimation and Cost Management Determine Estimate Basis(Scope/ Location) Prepare Base Estimates Determine Risk/ Contingency Review Total Estimates Obtain Appropriate Approvals Determine Estimates Communication Approach Planners Traffic Pavements Structures ROW / RES Environmental Construction Utilities Historical Data Scope Types/Major Parameters Complexity Location/Size Input from 3rd Parties Input from Disciplines Planning (Projects) Cost Estimates Approved Planning (Projects) Estimates Release Planning (Projects) Estimates LONG RANGE PLAN PL AN NI NG COST ESTIMATING AND COST ESTIMATING MANAGEMENT Transportation Need Development Process Needs/ Deficiencies Input Step Database Document Milestone Ph as e Legend Prioritization Loop To Project Development Process Figure C-1. Cost estimation practice and cost estimation management during planning (NCHRP Project 8-49, Phase I).
Appendix C C-3 Update Estimate Basis(Scope/ Location) Prepare Base Estimate Perform Risk Analysis (Set Contingency) Review Total Cost Estimate Input from Disciplines Market Conditions Baseline Estimate Project Scoping 5-25% Design Project Complexity Obtain Appropriate Approvals Communicate Approval Macro Environment Project Estimate D ES IG N STIP Project Development Process PR O G RA M M IN G (P re- De sig n) Legend Decision COST ESTIMATING AND COST ESTIMATING MANAGEMENT To Final Design Traffic Roadway Structures ROW / RES Environmental Construction Utilities Historical Data Input from 3rd Parties Input Step Database Document Milestone Figure C-2. Cost estimation practice and cost estimation management during programming (NCHRP Project 8-49, Phase I).
C-4 Procedures Guide for Right-of-Way Cost Estimation and Cost Management Is Estimate on Budget? D ES IG N STIP YES NO Monitor Project Scope/Conditions Adjust Cost Estimate Estimate Potential Impact -Cost & Time Project Milestone 15,30,60,80% Design Project Co mplexity No Change Change YES NO N O IM PA CT N O IM PA CT NO Change Scope/Adjust Budget Design Development /Project Conditions Project Development Process Ph as e PR O G RA M M IN G (P re- De sig n) ESTIMATE MANAGEMENT To Final Design Update Estimate Basis(Scope/ Location) Prepare Base Estimate Perform Risk Analysis (Set Contingency) Review Total Cost Estimate Input from Disciplines Market Conditions Obtain Appropriate Approvals Communicate Approval Macro Environment Project Estimate Legend Decision COST ESTIMATING AND COST ESTIMATING MANAGEMENT Traffic Roadway Structures ROW / RES Environmental Construction Utilities Historical Data Input from 3rd Parties Input Step Database Document Milestone Approve Change? Potential Change? YES Figure C-3. Cost estimation practice and cost estimate management during preliminary design (NCHRP Project 8-49, Phase I).
Appendix C C-5 Figure C-4. Cost estimating and cost estimation management during final design (NCHRP Project 8-49, Phase I).
