The U.S. was the wealthiest nation in terms of built assets in 2012, with total wealth estimated at $39.7 trillion, according to the first Global Built Asset Wealth Index, published Tuesday.
ARCADIS, a global engineering and consultancy firm, and its subsidiary EC Harris, a global built asset consultancy, conducted the study to provide insight into the current and future prosperity of nations around the world based on analysis of investment in infrastructure and the built environment.
The index compares the U.S. with the 30 countries that collectively represent 82% of global GDP. It shows that total built asset wealth within these countries stands at $193 trillion, the equivalent of nearly three times the $68 trillion GDP of the same countries.
Researchers defined "built assets" as including all the tangible fixed capital investment counted in the national accounting framework used by national statistical offices: infrastructure investment, residential and non-residential construction, investments in plant and machinery and improvements in natural assets such as land reclamation. Following are the top 10 nations on the index:
| Country Built | Asset Wealth ($ trillion) | |
| 1. U.S. | $39.7 | |
| 2. China | $35.4 | |
| 3. Japan | $18.3 | |
| 4. India | $11.8 | |
| 5. Germany | $10.4 | |
| 6. France | $7.8 | |
| 7. Italy | $7.4 | |
| 8. South Korea | $6.0 | |
| 9. Russia | $5.9 | |
| 10. Spain | $5.9 | |
The index forecasts U.S. total wealth to grow to $47.2 trillion by 2022, a 19% increase.
China is coming on fast, and could surpass the U.S. in built asset wealth as early as 2014. By 2022, it is projected to have accumulated $75.7 trillion in built assets.
The study found that growth in built asset investment in the U.S. would average around 6.5% over the coming decade. However, two factors will contribute to China's overtaking the American economy in built asset terms.
