DALLAS — Transportation infrastructure funding is at a crossroad in 2014, as lawmakers confront the necessity of finding ways to bolster the rapidly depleting Highway Trust Fund while supporting efforts to ensure the nation's airports and ports maintain a global economic edge.

The Highway Trust Fund, which supports roads and surface transportation projects across the nation, will be insufficient at current funding levels to pay for new projects in 2015 or to even keep up with wear and tear on existing roads.

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