Integrating GIS with Interim Payment Valuation in Road Construction Projects: A Conceptual Framework
Abstract
Abstract
Interim Payment Valuation is a critical process in road construction contract administration, yet conventional valuation practices remain heavily dependent on manual measurements, fragmented documentation, spreadsheets, and professional judgement. These limitations can affect measurement accuracy, transparency, traceability, and the timeliness of payment certification. Although Geographic Information Systems have increasingly been applied to construction planning, quantity measurement, progress monitoring, infrastructure management, and decision support, their integration with contractual and financial processes for interim payment valuation remains insufficiently explored. This study therefore develops a conceptual framework for integrating GIS with Interim Payment Valuation in road construction projects. A PRISMA-guided structured literature review was conducted using the Scopus database, from which 29 publications were retained for thematic analysis. Bibliometric analysis using VOSviewer examined publication trends, keyword co-occurrence, citation relationships, co-authorship, and bibliographic coupling, while thematic analysis was used to identify the technological and functional capabilities relevant to GIS-enabled IPV. The findings demonstrate that GIS research has evolved from conventional spatial mapping towards integrated digital construction environments involving BIM, Web GIS, cloud computing, artificial intelligence, remote sensing, Internet of Things, and digital twins. However, the reviewed literature reveals a persistent gap in integrating spatially verified quantities with Bills of Quantities, contractual requirements, construction progress, financial records, and payment certification. In response, the proposed GIS-IPV framework integrates five interconnected process stages data acquisition; data processing and spatial modelling; information integration; valuation and decision support; and reporting and payment certification supported by cross-cutting data governance, interoperability, security, and stakeholder mechanisms. The framework provides a conceptual basis for linking where work is performed, what work is completed, how quantities are measured, what contractual provisions apply, and what amount should be valued for payment. The study extends the application of GIS from technical construction management towards financial and contractual administration and provides a foundation for developing spatially enabled, transparent, traceable, and auditable IPV systems. As the framework has not yet been empirically implemented or validated, future research should develop prototypes and evaluate their accuracy, efficiency, interoperability, usability, and effectiveness using real road construction projects.
Recommended Citation
Iro, A. I., Matindana, J. M., & Ijumulana, J. (2026). Integrating GIS with Interim Payment Valuation in Road Construction Projects: A Conceptual Framework. Tanzania Journal of Engineering and Technology (TJET), 45(2), 198-221. https://doi.org/10.65085/2619-8789.1074
Publisher Name
University of Dar es Salaam
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