Spending on new projects andmajor renovations dipped in the 1970s and 1980s, but has since risen and is nowhigher even than in the golden era of highway-building.

新工程和大规模维修的花费在七十和八十年代骤然下降，但是到现在一直在上升，甚至超过了黄金时代的修高速路的费用。

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Spending on new projects andmajor renovations dipped in the 1970s and 1980s, but has since risen and is nowhigher even than in the golden era of highway-building.

新工程和大规模维修的花费在七十和八十年代骤然下降，但是到现在一直在上升，甚至超过了黄金时代的修高速路的费用。

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