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Section 400
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2011 Construction Specifications
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2011 Specifications Book
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REVISION OF SECTION 206 - STRUCTURE BACKFILL (FLOW-FILL)
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Standard Special Provisions
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Sections 200 - 500 Revisions
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REVISION OF SECTION 203 - ROCK EXCAVATION
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Sample Construction Project Special Provisions
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Sections 100 - 200 Revisions
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Revision of Section 106 - Special Notice to Contractors – Buy America Requirements
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Recently Issued Special Provisions
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2016-04-07
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HBP Compaction
1999-1. October 21, 1999. 401.
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Construction Bulletins
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Superseded Construction Bulletins
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Precast Concrete Elements
2022-5. December 20, 2022. This construction bulletin officially cancels all previously approved variances to the CDOT Standards and Specifications related to ...
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Bulletins and Manuals
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Construction Bulletins
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Class G Concrete
2023-1. March 9, 2023. Class G concrete shall no longer be used on currently awarded CDOT projects and on future projects. This bulletin describes the ...
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Bulletins and Manuals
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Construction Bulletins
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Construction Manual
Updated on March 15, 2022.
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Bulletins and Manuals
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Construction Manual
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Temporary Electronic Signature for Change Orders Guidance
2020-1. March 27, 2020. This Construction Bulletin provides guidance and resources to implement using Adobe Sign for signing change orders. This temporary ...
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Bulletins and Manuals
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Construction Bulletins
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Work Shutdown Repercussions Due to Eclipse Traffic
2017-4. August 18, 2017. This outlines CDOT’s policy for lane closures on specific facilities during heavy traffic related to the upcoming solar eclipse event ...
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Construction Bulletins
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Superseded Construction Bulletins