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PDRI for Infrastructure

Where is PDRI for Infrastructure used?

The PDRI for Infrastructure template is used to assess scope definition for projects that are linear in nature, cover a wide geographical area, and affect multiple jurisdictions and stakeholder groups.


Key Characteristics

CharacteristicInfrastructure
Primary DesignerArchitect
Project OrientationHorizontal
SystemVector
UtilizationConveyance
OperationalFlow dynamics & networked grid
Interface with PublicExtensive
Environmental ImpactExtensive
Primary CostEarthwork, materials associated with structures
Installed Equipment CostMinimal
Land Cost Moderate to high
Jurisdiction Interface Extensive

Types of Projects

  • power or communication transmission lines
  • navigation locks
  • electrical distribution/transmission
  • airport runways
  • pipelines/pumping stations
  • highways
  • dams or levees
  • telecommunications
  • tunnels
  • canals
  • rails
  • marine or air terminals

Project Performance Impact

Application of the PDRI for Infrastructure template has been tested by the Construction Industry Institute (CII) on billions of dollars worth of infrastructure projects.  These projects included tunnels, security perimeters, pipelines, wharfs, electrical distribution, airport runways and taxiways, and roadways.

The table below compares project performance using their PDRI score at the time of project authorization (end of detailed scope). Projects with a PDRI score under 200 (a lower score indicates a better defined scope) consistently outperform projects with a PDRI score above 200 in terms of cost, schedule, and change orders.

PerformancePDRI Score < 200PDRI Score > 200Difference
Cost 5% below budget 25% above budget 30%
Schedule 13% behind schedule 30% behind schedule 17%
Change Orders 3% of budget 10% of budget 7%

Reference: Project Definition Rating Index Infrastructure Projects, Implementation Resources 268-2, Version 4.0, Construction Industry Institute, 2013.


Top Ten Elements

Elements - Infrastructure

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