“…The key to long-term success in fixing America’s physical assets is to stop treating three problems — decaying bridges, soaring public-sector pension costs, and fraying private-sector retirement security — as separate. They are inextricable. … If states were to pare back their pension and health-care liabilities by, collectively, just 25 percent, and if the federal government were to match the savings by half, the United States would have another nearly $200 billion for such projects over a decade, matching Trump’s reported federal-spending proposal. …”