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Extending I-70, Beaver Brook to Genesee
Closed
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Extending I-70 over Floyd Hill
Closed
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Extending I-70 over Floyd Hill
Closed
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Extending I-70, Idaho Springs to US-6
Closed
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Extending I-70, Idaho Springs to US-6
Closed
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Extending I-70, Idaho Springs to US-6
Closed
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Extending I-70, US-40 to Idaho Springs
Closed
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Extending I-70, Silver Plume to US-40
Closed
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Extendng I-70, tunnel to Silver Plume
Closed
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Extendng I-70, tunnel to Silver Plume
Closed
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Extendiing I-70, tunnel to Silver Plume
Closed
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Changing old D&RGW tracks north of Colorado River at Glenwood Springs
Closed
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Adding Gypsum, Colorado
Closed
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Addding Hotel Colorado
Closed
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Addding Hotel Colorado
Closed
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Adjusting dates for newer roads
Closed
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Adding mountain peaks
Closed
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Extending Roaring Fork River
Closed
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Extending Roaring Fork River
Closed
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Extending Roaring Fork River
Closed