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ophis: main span, looking downstream
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ophis: accessory arches from upstream
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ophis: northern accessory arch, looking upstream
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ophis: northern accessory arch, looking downstream
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ophis: downstream end southern accessory arch
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ophis: looking upstream, southern accessory arch
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ophis: looking upstream, southern accessory arch
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ophis: downstream end, northern accessory arch and main span
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ophis: channel downstream from bridge
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ophis: Neponset River bridge, Blue Hill Avenue