Douglas County: COLUMBINE OPEN SPACE BRIDGE REPLACEMENT. This project consists of construction of a new three span prestressed box girder bridge with bridge rail, asphalt pavement, guardrail, as well as landscape restoration. This project involves constructing and maintaining an on-site detour, drainage improvements, subgrade preparation, signs, and erosion control. The Project includes the following major items and approximate quantities: • Removal of Bridge – 1 LS • Class D Concrete (Bridge) – 260 CY • Reinforcing Steel (Epoxy Coated) – 71,963 LB • Prestressed Concrete Box (Depth Less Than 32 Inches) – 3,764 SF • Bridge Rail Type 10M – 372 LF

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