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Current
engineering guidance from American
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Association of
State Highway and Transportation
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Officials
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Recommends:
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2 lane roadways
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3 lane roadways
(example Lower Spenard)
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5 lane roadways (example
Tudor, Muldoon)
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No longer
recommends:
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4 lane roadways without a median -- due to
safety
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concerns
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Bottom line -- new roads will have
3-lane, 4-lane divided, or
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5-lane
configurations
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