How to fix crumbling U.S. roads, rails and airways

After more than a decade of declining tax revenue in the United States, highways are crumbling, rail lines are overburdened and airline corridors are congested. Factor in the economic weakness, the public's tax-cutting mindset and geopolitical instability, and an already shaky situation looks ready to worsen for commerce, jobs and several industries that are crucial for transportation infrastructure.

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