In 2023, Japan's road infrastructure maintenance stood at approximately 17.17 billion Euros, reflecting a steady commitment to sustaining its extensive road network. The forecast for the years 2024-2028 indicates a gradual increase in maintenance investment, growing from 17.35 billion Euros in 2024 to 17.761 billion Euros by 2028. Year-on-year growth is modest, with percentages ranging from 0.6% to 1.2%. The Compound Annual Growth Rate (CAGR) over the 5-year forecast period is approximately 1.1%, indicating stable yet slow expansion.

Future trends to watch include:

Integration of smart technologies in road maintenance, potentially increasing costs and efficiency.
Environmental considerations and sustainability efforts influencing funding allocation.
Japan's aging infrastructure requiring more significant refurbishments, impacting future maintenance budgets.