| Structures | DS-15001 | Concrete Surface Preparation and Testing Prior to Coating Application | 12/15/2015 | New | Kimball Olson | 515-233-7722 |
| Miscellaneous Construction | DS-15002 | Airport Safety Requirements | 10/20/2015 | New | Mike Marr | 515-239-1468 |
| General Requirements and Covenants | DS-15003 | Added Options Bidding | 10/20/2015 | New | Ed Kasper | 515-239-1414 |
| General Requirements and Covenants | DS-15004 | Best Value Alternative (A - D) Bidding | 10/20/2015 | New | Ed Kasper | 515-239-1414 |
| General Requirements and Covenants | DS-15005 | Construction Progress Schedule | 10/20/2015 | New | Kevin Merryman | 515-239-1848 |
| Structures | DS-15006 | Sliplining Existing Pipe Culverts | 10/20/2015 | New | Dave Claman | 515-239-1487 |
| Miscellaneous Construction | DS-15007 | Contractor Stockpiled Shoulder Material | 10/20/2015 | New | None | |
| Structures | DS-15008 | Fabric Formed Concrete Structure Revetment | 10/20/2015 | New | Dave Claman | 515-239-1487 |
| Structures | DS-15009 | Bridge Deck Over-Depth Repair and Overlay | 10/20/2015 | New | None | |
| Surface Courses | DS-15010 | Dowel Bar Retrofit | 10/20/2015 | New | Kevin Merryman | 515-239-1848 |
| Surface Courses | DS-15011 | PCC Pavement Non-Destructive Thickness Determination | 10/20/2015 | Replaced by DS-15051 | Kevin Jones | 515-239-1237 |
| General Requirements and Covenants | DS-15012 | Lane Rental (A + B Bidding with Incentive/Disincentive) | 10/20/2015 | New | Ed Kasper | 515-239-1414 |
| Surface Courses | DS-15013 | Alternate Acceptance of HMA for Local Systems Projects | 10/20/2015 | New | None | |
| Structures | DS-15014 | Precast Reinforced Concrete Three-Sided Culvert | 10/20/2015 | New | Dave Claman | 515-239-1487 |
| Miscellaneous Construction | DS-15015 | Portable Temporary Traffic Signals for Flagger Stations | 10/20/2015 | Replaced by DS-15065 | Dan Sprengeler | 515-239-1823 |
| General Requirements and Covenants | DS-15016 | Small Business Development Contracts | 10/20/2015 | Replaced by DS-15045 | Karen Kienast | 515-233-7970 |
| General Requirements and Covenants | DS-15045 | Small Business Development Contracts | 8/16/2016 | Replaced By DS-15048 | Karen Kienast | 515-233-7970 |
| Structures | DS-15017 | Adhesive-Bonded Anchors and Dowels for Traffic Railings | 10/20/2015 | New | Gary Novey | 515-239-1233 |
| Surface Courses | DS-15018 | Pavement Interlayer Geotextile | 10/20/2015 | Replaced by DS-15046 | None | |
| Erosion Control | DS-15019 | Floating Silt Curtain | 10/20/2015 | New | None | |
| Structures | DS-15020 | Structural Concrete (4500 psi or Greater) | 10/20/2015 | Replaced by DS-15056 | Ahmad Abu-Hawash | 515-239-1393 |
| Surface Courses | DS-15021 | Transverse Joint Leveling for HMA Pavements | 10/20/2015 | New | None | |
| Surface Courses | DS-15022 | Partial Depth PCC Finish Patches | 10/20/2015 | New | Kevin Merryman | 515-239-1848 |
| Structures | DS-15023 | Partial Depth Bridge Deck Patching | 10/20/2015 | New | Gary Novey | 515-239-1233 |
| Surface Courses | DS-15024 | Hot Mix Asphalt Interlayer | 10/20/2015 | Replaced by SS-15006 | Jeffrey Shmitt | 515-239-1013 |
| Surface Courses | DS-15025 | Hot Mix Asphalt Thin Lift Overlay | 10/20/2015 | Replaced by DS-15037 | Jeffrey Shmitt | 515-239-1013 |
| Miscellaneous Construction | DS-15026 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 10/20/2015 | Replaced by DS-15034 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15027 | Construction Work on Railroad Right of Way with A + B for Bidding Railroad Flaggers (Union Pacific) | 10/20/2015 | Replaced by DS-15040 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15028 | Maintenance Work on Railroad Right of Way (Union Pacific) | 10/20/2015 | Replaced by DS-15041 | Tom Reis | 515-239-1566 |
| Structures | DS-15029 | Fiber Reinforced Polymer Repair for Concrete Containment of Collision Damaged Pretensioned Prestressed Concrete Beams | 10/20/2015 | New | None | |
| Structures | DS-15030 | Modular Expansion Joint Assembly | 10/20/2015 | New | Gary Novey | 515-239-1233 |
| Surface Courses | DS-15031 | Quality Management Concrete (QM-C) | 10/20/2015 | Replaced by DS-15038 | Kevin Merryman | 515-239-1848 |
| Structures | DS-15032 | Mass Concrete - Control of Heat of Hydration | 10/20/2015 | New | Kyle Frame | 515-239-1619 |
| Structures | DS-15033 | High Performance Concrete for Structures | 10/20/2015 | Replaced by DS-15044 | Wayne Sunday | 515-239-1185 |
| Miscellaneous Construction | DS-15034 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 11/17/2015 | Replaced by DS-15042 | Tom Reis | 515-239-1566 |
| Structures | DS-15035 | Structural Concrete Coating | 12/15/2015 | New | Kimball Olson | 515-233-7722 |
| Surface Courses | DS-15036 | Evaluation of Longitudinal Joint Quality for Flexible Paving Mixtures with Incentive/Disincentive | 12/15/2015 | New | Jeffrey Shmitt | 515-239-1013 |
| Surface Courses | DS-15037 | High Performance Thin Lift Overlay | 2/16/2016 | Replaced by DS-15043 | Jeffrey Shmitt | 515-239-1013 |
| Surface Courses | DS-15043 | High Performance Thin Lift Overlay | 10/18/2016 | Replaces DS-15037 | Jeffrey Shmitt | 515-239-1013 |
| Surface Courses | DS-15038 | Quality Management Concrete (QM-C) | 4/19/2016 | Replaces DS-15031 | Kevin Merryman | 515-239-1848 |
| Miscellaneous Constructions | DS-15039 | Construction or Maintenance Work on Railroad Right-of-Way (Dakota, Minnesota, & Easter Railroad Corporation dba Canadian Pacific) | 4/19/2016 | Replaced by DS-15047 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15040 | Construction Work on Railroad Right-of-Way with A+B for Bidding Railroad Flaggers (Union Pacifc Railroad) | 5/17/2016 | Replaces DS-15027 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15041 | Maintenance Work on Railroad Right-of-Way (Union Pacifc Railroad) | 5/17/2016 | Replaces DS-15028 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15042 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 5/17/2016 | Replaced by DS-15053 | Tom Reis | 515-239-1566 |
| Structures | DS-15044 | High Performance Concrete for Structures | 6/21/2016 | Replaces DS-15033 | Kyle Frame | 515-239-1619 |
| Surface Courses | DS-15046 | Pavement Interlayer Geotextile for PCC Overlays | 11/15/2016 | Replaced by DS-15052 | Kevin Merryman | 515-239-1848 |
| Miscellaneous Construction | DS-15047 | Construction or Maintenance Work on Railroad Right-of-Way (Dakota, Minnesota, & Eastern Railroad Corporation dba Canadian Pacific) | 10/18/2016 | Replaces DS-15039 | Tom Reis | 515-239-1566 |
| General Requirements and Covenants | DS-15048 | Small Business Development Contracts | 12/20/2016 | Replaces DS-15045 | Karen Kienast | 515-239-7970 |
| Surface Courses | DS-15049 | Primary and Interstate Pavement Smoothness | 12/20/2016 | New | Jeff Devries | 515-239-1237 |
| Surface Courses | DS-15050 | Partial Depth PCC Finish Patches | 01/18/2017 | Replaced by GS-15006 | Kevin Merryman | 515-239-1848 |
| Surface Courses | DS-15051 | PCC Pavement Non-Destructive Thickness Determination | 1/18/2017 | Replaces DS-15011 | Jeff Devries | 515-239-1237 |
| Surface Courses | DS-15052 | Pavement Interlayer Geotextile for PCC Overlays | 1/18/2017 | Replaces DS-15046 | Kevin Merryman | 515-239-1848 |
| Miscellaneous Construction | DS-15053 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 2/21/2017 | Replaced by DS-15055 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15054 | Maintenance Work on Railroad Right-of-Way (Union Pacifc Railroad) | 5/16/2017 | Replaces DS-15041 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15055 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 5/16/2017 | Replaced by DS-15059 | Tom Reis | 515-239-1566 |
| Structures | DS-15056 | Structural Concrete (4500 psi or Greater) | 10/17/2017 | Replaces DS-15020 | Ahmad Abu-Hawash | 515-239-1393 |
| Surface Courses | DS-15057 | High Performance Thin Lift Overlay | 10/17/2017 | Replaces DS-15043 | Jeffrey Shmitt | 515-239-1013 |
| Surface Courses | DS-15069 | PCC Pavement Nondestructive Thickness Determination | 1/16/2019 | Replaces DS-15064 | Jeff Devries | 515-239-1237 |
| Miscellaneous Construction | DS-15067 | Maintenance Work on Railroad Right-of-Way (Union Pacific Railroad) | 10/16/2018 | Replaces DS-15062 | Tom Reis | 515-239-1566 |
| Surface Courses | DS-15066 | High Performance Thin Lift Overlay | 09/18/2018 | Replaces DS-15063 | Jeffrey Schmitt | 515-239-1013 |
| Miscellaneous Construction | DS-15065 | Portable Temporary Traffic Signals for Flagger Stations | 7/17/2018 | Replaces DS-15015 | Dan Sprengeler | 515-239-1823 |
| Surface Courses | DS-15064 | PCC Pavement Nondestructive Thickness Determination | 4/17/2018 | Replaced by DS-15069 | Kevin Jones | 515-239-1237 |
| Surface Courses | DS-15063 | High Performance Thin Lift Overlay | 4/17/2018 | Replaced by DS-15066 | Jeffrey Schmitt | 515-239-1013 |
| Miscellaneous Construction | DS-15062 | Maintenance Work on Railroad Right-of-Way (Union Pacific Railroad) | 4/17/2018 | Replaced by DS-15067 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15061 | Construction Work on Railroad Right-of-Way with A+B for Bidding Railroad Flaggers (Union Pacific Railroad) | 4/17/2018 | Replaces DS-15040 | Tom Reis | 515-239-1566 |
| Surface Courses | DS-15060 | Penetrating Engineered Fog Seal | 2/20/2018 | Obsolete | Chris Brakke | 515-239-1882 |
| Miscellaneous Construction | DS-15059 | Construction or Maintenance Work on Railroad Right-of-Way (Chicago, Central, & Pacific Railroad Company and Cedar River Railroad Company) | 11/21/2017 | Replaces DS-15055 | Tom Reis | 515-239-1566 |
| Miscellaneous Construction | DS-15058 | On-Call Contracting for High Tension Cable Guardrail Repair | 1/17/2018 | New | None | |
| Structures | DS-15068 | Sliplining Existing Pipe Culverts | 11/20/2018 | New | Dave Claman | 515-239-1487 |
| Surface Courses | DS-15070 | Transverse Crack Leveling for HMA Pavements | 4/16/2019 | Replaces DS-15021 | None | |
| Surface Courses | DS-15071 | High Performance Thin Lift Overlay | 4/16/2019 | Replaces DS-15066 | Jeffrey Schmitt | 515-239-1013 |
| Miscellaneous Construction | DS-15072 | Flood Debris Removal | 4/16/2019 | New | None | |