A06 · TOPIC · public-investment-and-projecGRA dossier · service level R0
GRADevelopment Finance NexusEstablished
Topic dossier · Development Finance Nexus

Public investment and projects

Most infrastructure in developing economies is financed through the budget, public enterprises and sovereign borrowing, with development banks as lenders and advisers. Whether a project delivers depends largely on what happens before financing: identification, feasibility, appraisal, selection, procurement design, land and safeguards preparation. This page sets out how project risk develops through the preparation cycle, which records evidence it, and who decides at each gate.

01In brief

The short answer.

Project preparation is the work before financing that decides whether an infrastructure project delivers: feasibility, design, appraisal, safeguards and procurement planning. Optimism at appraisal and preparation gaps become delays and cost overruns, procurement shapes risk transfer and maintenance decides the long-term return.

02Spatial finance

Where projects sit, and which layer protects them.

Where development projects meet hazard and poverty, and which financing layer protects them. Hypothetical projects and design values.

Development projects in Mozambique and Malawi against hazard and poverty, with the financing layer that would protect each.Hypothetical projects and design values; no country's strategy is shown.
03Console

Project pipeline and safeguards, in outline.

The working screen behind this subject: its structure, terms and states. Names are placeholders and values illustrative.

Project pipeline and safeguards

Public investment and projects · Country programme D · Pipeline review 3

Safeguard finding openGRA · Development Finance Nexus

Pipeline

Irrigation rehabilitationFood and waterMediumClearAppraisal
Port expansionInfrastructureHighFindingPreparation
SME credit lineFinanceLowClearBoard
Mini-grid programmeEnergyLowClearImplementation

Handoff

Readiness dossier
v2, reviewed
Receiving institution
development finance institution
Decision
theirs, not GRA's
Record
HO-967

Projects and hazard

red: high hazard exposure

Circle size: exposure value · placeholderN
Project pipeline and safeguards: the screen's structure, terms and states for Public investment and projects.Placeholder names and illustrative values; a design, not a record or a live system.
04The question

Public investment and projects: how the risk develops.

Infrastructure preparation and risks. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.

Mechanism

Optimism at appraisal

Cost estimates and demand forecasts made to secure approval tend to be optimistic. Reference class forecasting and independent review exist because the bias is systematic across sectors and countries, not accidental.

Mechanism

Preparation gaps become delays

Incomplete feasibility, design, land acquisition or resettlement planning delays the start of works while commitment fees and price escalation continue. Delay cascades into cost overruns, scope cuts and restructuring.

Mechanism

Procurement shapes risk transfer

Contract type decides who carries ground, design, price and schedule risk. Poorly packaged contracts, thin bidder fields and weak contract management move risk back to the public client through claims and variations.

Mechanism

Maintenance decides the return

An asset built but not maintained delivers less service over a shorter life. Maintenance competes with new projects in every budget round and usually loses, turning a stock of assets into a contingent liability.

05Key terms

Terms used on this page.

Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.

TermDefinition
Optimism biasThe tendency to underestimate costs and durations and overestimate benefits at appraisal.
Project preparation facilityFunding for feasibility studies, design and structuring before investment decisions.
Open contractingPublishing data and documents across the contracting cycle, using the Open Contracting Data Standard.
06Indicators

What is measured, and how well.

Each indicator carries its unit, its cadence, the kind of source behind it and the evidence label a value would carry. No values are shown: a programme supplies them under its own authority.

IndicatorUnitCadenceSource typeLabel
Cost overrun at completionpercent of appraised costper projectMDB completion reportsOFFICIAL
Schedule slippage against appraisalmonthsper projectMDB completion reportsOFFICIAL
Time from approval to first disbursementmonthsper projectMDB operations dataOFFICIAL
Bidders per competitive tendercountper tenderProcurement records in the Open Contracting Data StandardOFFICIAL
Contracts with published award and contract datapercent of public contracts by valueannualOpen contracting publishersREPORTED
Capital budget execution ratepercent of approved capital appropriationannualBudget execution reportsOFFICIAL
Outcome rating at completionrating scale (highly unsatisfactory to highly satisfactory)per projectIndependent evaluation unitsOFFICIAL
Maintenance allocation against asset basepercent of estimated asset replacement valueannualBudget documents, asset registersESTIMATED
07Canvas

From sources to decisions.

The topic as a computational graph: named sources feed the methods, an evidence review gates the outputs, and the decisions stay with the authorities that hold them.

Pipeline canvas · Public investment and projects as a run graphDesign, not a record
Public investment and projects: a programme through its gatesA request with a named owner becomes a scoping note; inputs are qualified at a gate; delivery runs in workstreams; a controlled test and an independent review precede publication; the owner decides. Design of the process, not a record of a run.

Fig. 02Nodes carry their type, two metric rows and a state; connectors show what feeds what; dashed frames name the owners; the timeline is the cadence. Design of the pipeline, not a record of a run.

08Sources

Where the evidence comes from.

Named public datasets and institutional records, each with its licence class. Sources by agreement are used only under their terms and never republished.

SourceWhat it givesLicence class
World Bank Projects and Operations dataApprovals, financing, ratings and documents for each operationCC BY 4.0
Independent Evaluation Group project ratings (World Bank)Validated outcome ratings from completion reportsCC BY 4.0
Open Contracting Data Standard publications (Open Contracting Partnership data registry)Tender, award, contract and implementation data published by governmentsOpen licence declared by each publisher
IMF Public Investment Management Assessment reportsInstitutional ratings across planning, allocation and implementationPublic where published by the authorities, IMF terms
World Bank Benchmarking Infrastructure DevelopmentRegulatory quality of PPP and public procurement of infrastructure across the project cycleCC BY 4.0
AfDB, ADB and IDB project portalsDisclosed appraisal, procurement and completion documentsPublic under each bank's disclosure policy
National public investment registers and audit reportsPipeline status, appraisal documents and audit findingsPublic records, terms per government
09Decisions

Who decides, and what the evidence serves.

Development Finance Nexus prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.

Who decidesThe questionEvidence this page serves
Finance ministries and public investment unitsWhether a project is ready to enter the budget or the borrowing programmeFeasibility, appraisal and safeguards evidence by gate; reference class ranges for cost and time
MDB management and boards of executive directorsWhether to approve a loan and with which conditions of effectivenessPreparation status, procurement plan, safeguard instruments, implementation capacity
Line ministries and implementing agenciesHow to package contracts and allocate ground, design and price riskProcurement records for comparable contracts, bidder fields, claims history
Supreme audit institutionsWhether completed projects delivered what was appraisedCompletion ratings, cost and schedule against appraisal

Outputs this topic produces

  • Preparation profiles showing which gates are evidenced and which remain open
  • Reference class comparisons of cost and schedule from completed operations, with sources
  • Procurement evidence drawn from open contracting data
  • Question sets for appraisal and selection review
10Core questions

What the industry asks.

Public investment can raise growth and welfare, but its returns depend on management. Projects chosen for political rather than economic reasons, designs that ignore hazards, cost overruns and poor maintenance all reduce value. As climate change alters hazards over the life of assets, decisions made today determine exposure for decades. Strengthening public investment management is therefore a resilience measure in its own right.

  • How are projects selected, and is the choice informed by appraisal of costs, benefits and risks?
  • Do designs account for current and future hazards over the full life of the asset?
  • How are construction, cost and schedule risks managed and shared between public and private parties?
  • Is maintenance funded, so that assets keep delivering services and resist shocks?
11Mechanisms

How risk and finance interact.

Project outcomes are shaped at every stage of the investment cycle.

Selection

Appraisal and prioritization

Cost-benefit and multi-criteria appraisal help choose projects that deliver most value. Weak appraisal is a common source of poor outcomes.

Design

Resilient engineering

Siting, standards and design choices determine exposure to floods, heat and other hazards. Engineering science: Critical Infrastructure.

Operation

Maintenance and management

Underfunded maintenance shortens asset life and raises vulnerability to shocks.

Research on public investment efficiency finds substantial differences between countries in how much value they obtain from each unit spent, and attributes much of the difference to institutions: planning, appraisal, procurement, budgeting and maintenance. Resilience fits naturally into this framework, because the same institutions decide whether hazards are considered and whether assets are kept in good condition.

12Methods and evidence

How the evidence is built, and its limits.

  1. 01

    Public investment management assessment

    Established diagnostic frameworks assess institutions across the investment cycle. Results describe systems, not individual projects.

  2. 02

    Cost-benefit analysis

    Economic appraisal using economics and development economics, including resilience benefits. Valuing avoided losses requires assumptions about hazard probability.

  3. 03

    Hazard screening

    Screening of project sites against hazard data, using geospatial information systems. Data resolution and future climate uncertainty limit precision.

  4. 04

    Ex post evaluation

    Evaluation of completed projects, using causal inference and impact evaluation where feasible. Evaluations are often delayed and not always published.

13Methods

How it is studied, and what the methods cannot say.

  1. Economics and development economicsEconomic appraisal of a project · Debt sustainability context · Tariff and subsidy incidenceApplied here
  2. Decision analysis under uncertaintyRobust choice of design standard · Multi-criteria pipeline screeningApplied here
  3. Geospatial information systemsSafeguard screening of a project footprint · Physical climate exposure of assetsApplied here
  4. Causal inference and impact evaluationEvaluating a credit line or guarantee · Infrastructure impact on householdsApplied here
14Questions

Questions and answers.

Why are cost overruns so common?
Estimates are made early, under pressure to secure approval, with incomplete ground and design information. Reference class forecasting corrects for this by comparing a project with the record of similar completed projects.
What is project preparation finance?
Funding for feasibility studies, design, safeguards and transaction advice before investment. MDB facilities and programmes such as PPIAF fund it because underprepared projects are a leading cause of delay.
Does Development Finance Nexus appraise projects?
No. Appraisal belongs to the borrower and the lenders under their own policies. The platform sets out what evidence an appraisal draws on and labels it.
Does resilient design cost more?
Sometimes more at the outset, but analyses often find that avoided losses and lower repair costs over the asset's life outweigh the extra cost. Results depend on the hazard and the asset.
Why is maintenance a resilience issue?
Poorly maintained assets fail sooner and suffer more damage in shocks. Maintenance budgets are often the first cut under fiscal pressure.
Does GRA appraise projects?
No. It does not appraise, rate or recommend projects. It publishes shared understanding of evidence and methods.
What is a public investment management assessment?
A structured review of how well a government plans, allocates and implements public investment, used to identify institutional improvements.
Development Finance Nexus

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