PROJECTS LETTING -  May , 2026

 
 
bid envelopes

 
 

The following projects are currently advertised for bids. Interested bidders may find general information about each project, as well as printable actual Contract Documents in PDF format. The general information is the same project description provided to Newspapers and by direct mail solicitations. The Contract Documents include the Drawings and the entire Project Manual.  Drawings can be printed on any regular or large format printers. The Project Manual includes Proposal Forms,  Front End Documents, General and Supplementary Covenants, and Technical specifications. All these are also completely printable.

Effective October 2009, the Department will no longer be responsible for providing hard copy notice to bidders or addenda to either contractors or plan rooms. An email listserv has been created to communicate electronically with vendors currently on file with the DNR. As a member of this listserv, you will receive electronic notice to bidder information on a regular basis. To subscribe to this list, click here.

The Department will be utilizing the vendor Beeline and Blue to provide printed copies of Plans and Specifications and Addenda upon request. The department will no longer provide complimentary copies of Plans and Specifications to contractors or sub-contractors after award of the contract. Please visit dfs.beelineandblue.com/iowa or contact (515) 244-1611 for more information.

To access any of these, unless you have already done so, you will need to download and install Acrobat Reader from the Adobe Website. 
You may obtain a free download from
 

Click on the project names below to view the one(s) which interest you.

DELAWARE 25-03-28-01 Backbone State Park - Wastewater Improvements-2026-05-21   Bid Completion detail
VAN BUREN 24-06-89-01 Lacey-Keosauqua - boat ramp/ADA improvements-2026-05-21   Bid Completion detail
VAN BUREN 25-06-89-04 Lacey-Keosauqua - Accessibility Improvements-2026-05-21   Bid Completion detail
CASS 25-04-15-03 Lake Anita - ADA Sidewalk for Playground-2026-05-28   Bid Completion detail
MONTGOMERY 25-04-69-03 Viking Lake - Accessibility Improvements-2026-05-28   Bid Completion detail
SHELBY 25-04-83-03 Prairie Rose - Accessibility Improvements-2026-05-28   Bid Completion detail
TAYLOR 25-04-87-02 Lake of Three Fires - Accessibility Improvements-2026-05-28   Bid Completion detail
DICKINSON 26-01-30-01 Great Lakes Wildlife Unit - Hodge WPA Wetland Restoration -2026-06-11   
ALLAMAKEE 25-03-03-01 Yellow River State Forest - Paint Creek Streambank Improvements - Phase 2-2026-06-18   
CASS 25-04-15-01 Lake Anita State Park - Sewer Improvements-2026-06-18   
DAVIS 26-05-26-01 Lake Wapello State Park - Wastewater Improvements-2026-06-18   
DICKINSON 25-01-30-05 Dickinson County Wildlife Areas and State Parks - Road Maintenance-2026-06-18   
GUTHRIE 21-04-39-01 Springbrook Education Center - Complex Demolition-2026-06-18   
GUTHRIE 25-04-39-02 Springbrook State Park - Accessibility Improvements-2026-06-18   
JACKSON 25-06-49-05 Green Island and Princeton WMA - Flood Repair-2026-06-18   




DELAWARE -- PROJECT # 25-03-28-01                5/21/2026                Large Project Letting
BACKBONE STATE PARK
WASTEWATER IMPROVEMENTS
Proposal Guarantee: $75,000
Completion Date: 6/30/2027

   This project includes improvements for two wastewater treatment system in Backbone State Park. The project primarily consists of the following: The existing septic tank and sand filter treatment system will be removed and replaced. UV disinfection will be installed. A lift station and valve vault will be removed and replaced. The lagoon treatment system will be improved with piping modifications, sampling manholes, and tablet chemical treatment equipment.

ESTIMATED QUANTITIES:
    Clearing and Grubbing     1 L.S.
    Excavation, Class 10     950 C.Y.
    Sanitary Sewer Gravity Main, Trenched, PVC, 4"     30 L.F.
    Sanitary Sewer Gravity Main, Trenched, PVC, 6"     260 L.F.
    Sanitary Sewer Gravity Main, Trenched, PVC, 8"     605 L.F.
    Sanitary Sewer Force Main, Trenched, HDPE, 3"     70 L.F.
Alternate
    Alternate 1 - Sanitary Sewer Force Main, Trenchless, HDPE, 3"     776 L.F.
    Pressure Test Existing Force Main     1 L.S.
    Manhole, SW-301, 48"     2 Each
    Sanitary Sewer, Plug Valves     7 Each
    Baffle Curtain     1 Each
    Chemical Tablet Feeder     2 Each
    Composite Sampling Manhole     3 Each
    Flume and Composite Sampling Manhole     2 Each
    Flow Meter Manhole     1 Each
    Lift Station and Valve Vault     1 Each
    UV Disinfection System     1 Each
    Chlorine Contact Tank, Septic Tank, 2,000-gal     1 Each
    Septic Tank, 10,000-gal     1 Each
    Septic Tank, 12,000-gal     1 Each
    Recirculation Tank, 10,000-gal     1 Each
    Sand Filter     1 Each
    Headwall     1 Each
    Access Pad, Granular, 6"     150 S.Y.
    Chain Link Fence, Commercial, 8'     540 L.F.
    Deer Exclusion Fence, 8'     1,090 L.F.
    Gates, 12' X 8'     2 Each
    Demolition Work     1 L.S.
    Site Restoration     1 L.S.
    Bollard     5 Each
    Construction Survey     1 L.S.
    Mobilization     1 L.S.
    Electrical, Complete     1 L.S.
    Portable Composite Sampler     2 Each
    SWPPP Preparation     1 Each
    SWPPP Management     1 Each
    Erosion Control     1 Each

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




ALLAMAKEE -- PROJECT # 25-03-03-01                6/18/2026                Large Project Letting
YELLOW RIVER STATE FOREST
PAINT CREEK STREAMBANK IMPROVEMENTS - PHASE 2
Proposal Guarantee: $6,250
Completion Date: 12/11/2026

   This project includes re-establishing eroded streambanks and placement of cross vanes, bendway weirs and revetment armoring on a section of Paint Creek within Yellow River State Forest.

ESTIMATED QUANTITIES:
    Mobilization     1 L.S.
    Clearing and Grubbing     1 L.S.
    Class 10 Excavation     2,540 C.Y.
    Wattles, 9"     550 L.F.
    Revetment, Class E     330 Tons
    Revetment, Class B     480 Tons
    Large Boulders     100 Each
    Erosion Matting     2,048 S.Y.
    Temporary Seeding     0.5 Acres
    Permanent Seeding     0.5 Acres
    Mobilizations, Emergency Erosion Control     1 Each

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




CASS -- PROJECT # 25-04-15-01                6/18/2026                Large Project Letting
LAKE ANITA STATE PARK
SEWER IMPROVEMENTS
Proposal Guarantee: $37,500
Completion Date: 4/30/2027

   This project primarily consists of removing 4" VCP sewers, installing 8" PVC sewers, and replacing sanitary sewer manholes in the campground. Some water main will be removed and replaced. Some water mains, sewers, manholes, and one septic tank will be abandoned and removed. The project also includes full depth patches, seeding, an NPDES General Permit #2, and a SWPPP. All work, except seeding, shall be completed between September 8, 2026 and the intermediate completion date of March 31, 2027.

ESTIMATED QUANTITIES:
    2010, 1.08, A - Clearing & Grubbing - Tree Removal     297 Units
    3010, 1.08, F - Trench Compaction Testing     1 L.S.
    4010, 1.08, A - Sanitary Sewer Gravity Main, Trenched, 8"     1,990 L.F.
    4010, 1.08, A - Sanitary Sewer Gravity Main, Trenched, C900, 8"     50 L.F.
    4010, 1.08, H - Removal of Sanitary Sewer     1,530 L.F.
    4010, 1.08, K - Sanitary Sewer Abandonment, Plug, 4"     26 Each
    4060, 1.08, A - Sanitary Sewer Video Inspection     540 L.F.
    5010, 1.08, A - Water Main, Trenched, 3"     50 L.F.
    5010, 1.08, F - Water Main Abandonment, Cap, LE 3"     6 Each
    5010, 1.08, H - Water Main Removal     50 L.F.
    6010, 1.08, A - Manhole, SW-301, 48"     3 Each
    6010, 1.08, A - Manhole, SW-303, 48"     5 Each
    6010, 1.08, G - Connection to Existing Manhole     3 Each
    6010, 1.08, H - Remove Manhole, 48"     19 Each
    7040, 1.08, A - Full Depth Patches, PCC     13 S.Y.
    7040, 1.08, A - Full Depth Patches, HMA     178 S.Y.
    8030, 1.08, A - Temporary Traffic Control     1 L.S.
    9010, 1.08, A - Seeding and Mulching for Conventional Seeding, Native Seed Mix     0.55 Acres
    9010, 1.08, B - Seeding, Fertilizing, and Mulching for Hydraulic Seeding, Type 1 Seed Mix     0.6 Acres
    9040, 1.08, A - SWPPP Preparation & NPDES General Permit #2     1 L.S.
    9040, 1.08, A - SWPPP Management     1 L.S.
    9040, 1.08, D - Filter Sock, Installation, 8"     1,990 L.F.
    9040, 1.08, D - Filter Sock, Removal, 8"     1,990 L.F.
    11,010, 1.08, A - Construction Survey     1 L.S.
    11,020, 1.08, A - Mobilization     1 L.S.
    Remove Existing Septic Tank     1 Each
    Investigate MH 1061     1 L.S.

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




DAVIS -- PROJECT # 26-05-26-01                6/18/2026                Large Project Letting
LAKE WAPELLO STATE PARK
WASTEWATER IMPROVEMENTS
Proposal Guarantee: $25,000
Completion Date: 6/30/2027

   This wastewater treatment improvement projeect includes baffle installation, aeration upgrades, installation of chlorination and de-chlorination chemical treatment systems, and flume and sampling manholes at the lagoons. Electrical work is also included.

ESTIMATED QUANTITIES:
    Excavation, Class 10     30 C.Y.
    Sanitary Sewer Gravity Main, Trenched, PVC, 6"     62 L.F.
    Removal of Sanitary Sewer, 4"     16 L.F.
    Manhole, SW-301, 48"     1 Each
    Sanitary Sewer, Valve, Plug, 6"     2 Each
    Baffle Curtain     1 Each
    Aeration Equipment     1 L.S.
    Chemical Tablet Feeder     2 Each
    Composite Sampling Manhole     1 Each
    Flow Meter and Manhole     1 Each
    Septic Tank, 1,250-gal     2 Each
    Chain Link Fence, Commercial     21 L.F.
    Removal of Fence     238 L.F.
    Erosion Control     1 L.S.
    Site Restoration     1 L.S.
    Mobilization      1 L.S.
    Electrical, Complete     1 L.S.

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




DICKINSON -- PROJECT # 25-01-30-05                6/18/2026                Large Project Letting
DICKINSON COUNTY WILDLIFE AREAS AND STATE PARKS
ROAD MAINTENANCE
Proposal Guarantee: $50,000
Completion Date: 5/15/2027

   This project consists of pavement and rock road maintenance in various parks and wildlife areas in Dickinson County.

ESTIMATED QUANTITIES:
    Binder Bitumen, MC-3000     35,610 GAL.
    Aggregate, Roadway Cover, 3/8"     1,544 Tons
    Preparation of Surface - Microsurfacing     1.73 MI.
    Emulsified Asphalt - Microsurfacing     4,976 GAL.
    Aggregate - Microsurfacing, L-2     174 Tons
    Slurry Level     0.15 MI.
    Preparation of Surface - Slurry     0.15 MI.
    Emulsified Asphalt - Slurry Level, Wedge, Treatment     69 GAL.
    Clean and Fill Crack (HMA Surfaces)     6.35 MI.
    Sealer Material (HMA Surfaces)      6,350 LB.
    Crack and Joint Clean and Fill (PCC Pavement)     0.11 MI.
    Sealer Material (PCC Surfaces)      10 LB.
    Patch, Full-Depth Finish, 6-inch, by Area, HMA     461.5 S.Y.
    Patch, Full-Depth Finish, by Area (Greater than 50 ft in length)     106.7 S.Y.
    Patch, Full-Depth Finish, 6-inch, by Count, HMA     23 Each
    Patch, Partial-Depth Repair, by Area, HMA     27.9 S.Y.
    HMA (Partial Depth Patch Material)     1 Tons
    Patch By Count (Repair) HMA     3 Each
    Subbase (Patch)     174 S.Y.
    Longitudinal Joint Repair     1,679 L.F.
    Curb and Gutter, 2.0'     13 L.F.
    Concrete Ditch     80 S.Y.
    Pavement Scarification     1,204 S.Y.
    Hot Mix Asphalt, Thin Lift Surface, 3/8 In. Mix     68 Tons
    Hot Mix Asphalt, Standard Traffic, Intermediate Course, 1/2"     133 Tons
    Asphalt Binder, PG 64-34E+     5.5 Tons
    Asphalt Binder, PG 58-28S     7 Tons
    Blade and Shape Shoulder Material     1.35 STA.
    Reconstruction of Roadbed, Blade and Shape     78.16 STA.
    Granular Surface On Road, Class A     2,050 Tons
    Granular Shoulder, Type B     9 Tons
    Revetment, Class E     28 Tons
    Culvert, Concrete Roadway Pipe, 12"     38 L.F.
    Apron, Concrete, 12"     2 Each
    Remove Culvert Less Than or Equal To 36"     38 L.F.
    Painted Pavement Marking, High-Build Waterborne     86.7 STA.
    Reshaping Ditch     2 STA.
    Excavation, Class 13, Widen     3.8 C.Y.
    Base Widening, 6" HMA     11.2 S.Y.
    Modified Subbase     1.9 C.Y.
    Clearing and Grubbing     1 Units
    Traffic Control     1 L.S.
    Mobilization     1 L.S.

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




GUTHRIE -- PROJECT # 21-04-39-01                6/18/2026                Large Project Letting
SPRINGBROOK EDUCATION CENTER
COMPLEX DEMOLITION
Proposal Guarantee: $12,500
Completion Date: 3/26/2027

   This project includes demolition of the Springbrook Education Center complex and restoring the site to a natural state. Asbestos survey and abatement has been completed on the entire complex. Also included the demolition of four (4) auxiliary maintenance sheds.

ESTIMATED QUANTITIES:
    2401-6745650 Sited 1: Education Center Complex Demolition     1 L.S.
    2401-6745650 Site 2: Maintenance Shed Demolition     1 L.S.
    2401-6745650 Site 3: Three (3) Park Office Maintenance Shed Demolitions     1 L.S.
    NPDES Permit #2 and SWPPP     1 L.S.
    2601-2634100 Mulching     4.6 Acres
    2601-2636015 Native Grass Seeding     4.5 Acres
    2601-2636044 Seeding and Fertilizing (Urban)     0.1 Acres
    2601-2636054 Wildflower Seeding     4.5 Acres
    2602-0000309 Perimeter and Slope Sediment Control Device, 12 In. Dia.     3,260 L.F.

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




GUTHRIE -- PROJECT # 25-04-39-02                6/18/2026                Large Project Letting
SPRINGBROOK STATE PARK
ACCESSIBILITY IMPROVEMENTS
Proposal Guarantee: $6,250
Completion Date: 10/30/2026

   This project includes constructing ADA-compliant PCC sidewalk, parking stall, and pit latrine at the CCC Shelter.

ESTIMATED QUANTITIES:
    2102-0425070 Special Backfill     26 Tons
    2102-2710070 Excavation, Cl 10, Roadway and Borrow     60 C.Y.
    2105-8425015 Topsoil, Strip, Salvage and Spread     17 C.Y.
    2401-6745650 Removal of Existing Structures     2 Each
    2511-7526005 Sidewalk, Reinforced PCC, 5 In.     57 S.Y.
    2515-2475006 Parking Stall, Reinforced PCC, 6 In.     36 S.Y.
    2526-8285000 Construction Survey     1 L.S.
    2527-9263209 ADA Striping and Van Parking Sign     1 L.S.
    2533-4980005 Mobilization     1 L.S.
    2601-2634105 Mulching, Bonded Fiber Matrix     0.15 Acres
    2601-2636044 Seeding and Fertilizing (Urban)     0.15 Acres
    2602-0000309 Perimeter & Slope Sediment Control Device, 9 In. Dia.     165 L.F.
    Single Precast Concrete Pit Latrine     1 L.S.

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




JACKSON -- PROJECT # 25-06-49-05                6/18/2026                Large Project Letting
GREEN ISLAND AND PRINCETON WMA
FLOOD REPAIR
Proposal Guarantee: $250,000
Completion Date: 5/28/2027

   This project will repair flood damage within the Green Island WMA and Princeton Reserve WMA. Repairs include placement of articulated concrete mat, importing embankment material, placement of revetment, installation of pipe and water control structures, and other minor repairs noted in the plans.

ESTIMATED QUANTITIES:
    CLEARING AND GRUBBING     1 L.S.
    CLASS 10 EXCAVATION     3,781 C.Y.
    EMBANKMENT IN PLACE     12,870 C.Y.
    GRANULAR SURFACING, CLASS A CRUSHED STONE     2,670 Tons
    REMOVAL OF EXISTING PIPE     1 L.S.
    36 INCH CONCRETE PIPE APRONS     4 Each
    48 INCH CORRUGATED METAL PIPE APRON     8 Each
    48 INCH CORRUGATED METAL PIPE     200 L.F.
    8 INCH CORRUGATED INTAKE RISER FOR WATER CONTROL STRUCTURE     2 Each
    36 INCH REINFORCED CONCRETE PIPE     186 L.F.
    HIGH STRENGTH GROUT FOR MUDJACKING     10 C.Y.
    EROSION STONE     50 Tons
    REVETMENT, CLASS B     6,388 Tons
    REVETMENT, CLASS E     22,646 Tons
    MOBILIZATION     1 L.S.
    ARTICULATED CONCRETE MATTING     31,900 S.Y.
    REMOVAL OF DEBRIS     1 L.S.
    48 INCH PRECAST WATER CONTROL STRUCTURE     1 L.S.
    WOOD EXCELSIOR MAT     4,810.1 SQ.
    MULCH     11.3 Acres
    SEEDING, TEMPORARY STABILIZING CROP     11.3 Acres
    SEEDING     11.3 Acres

notice to bidders

download plans and specs

Plans can be ordered by following this link: http://bit.ly/IADNRPlans

planholders list




VAN BUREN -- PROJECT # 24-06-89-01                5/21/2026                Small Project Letting
LACEY-KEOSAUQUA
BOAT RAMP/ADA IMPROVEMENTS
Proposal Guarantee: $0
Completion Date: 8/15/2026

   This project includes HMA saw cut, gravel and dirt excavations, granular subbase placement, rock placement, ~508 SY 6-inch PCC paving, ADA signage and installation. Contact Bruce Flippin - bruce.flippin@dnr.iowa.gov for plans/specs/questions. 515.689.8009

Contact:
Bruce Flippin
515-689-8009
bruce.flippin@dnr.iowa.gov




VAN BUREN -- PROJECT # 25-06-89-04                5/21/2026                Small Project Letting
LACEY-KEOSAUQUA
ACCESSIBILITY IMPROVEMENTS
Proposal Guarantee: $0
Completion Date: 8/15/2026

   This project includes HMA saw cut, gravel and dirt excavations, granular subbase placement, rock placement, ~450 SY 6-inch PCC paving, 4 and 6-inch tile line installation, stump grubbing/removals, ADA signage and installation, removable bollards and installation, ADA compliant concrete/stone doorway threshold modifications, seeding and fertilizing. Contact Bruce Flippin - bruce.flippin@dnr.iowa.gov for plans/specs/questions. 515.689.8009

Contact:
Bruce Flippin
515-689-8009
bruce.flippin@dnr.iowa.gov




CASS -- PROJECT # 25-04-15-03                5/28/2026                Small Project Letting
LAKE ANITA
ADA SIDEWALK FOR PLAYGROUND
Proposal Guarantee: $0
Completion Date: 10/30/2026

   This project includes constructing ADA-compliant PCC sidewalk to the park playground. Send an email to request plans and proposal form.

Contact:
Zach Gunsolley
515-250-3713
zach.gunsolley@dnr.iowa.gov




MONTGOMERY -- PROJECT # 25-04-69-03                5/28/2026                Small Project Letting
VIKING LAKE
ACCESSIBILITY IMPROVEMENTS
Proposal Guarantee: $0
Completion Date: 10/30/2026

   This project includes constructing ADA-compliant PCC sidewalk, parking stalls, and fishing amenities. Send an email to request plans and proposal form.

Contact:
Zach Gunsolley
515-250-3713
zach.gunsolley@dnr.iowa.gov




SHELBY -- PROJECT # 25-04-83-03                5/28/2026                Small Project Letting
PRAIRIE ROSE
ACCESSIBILITY IMPROVEMENTS
Proposal Guarantee: $0
Completion Date: 10/30/2026

   This project includes constructing ADA-compliant PCC sidewalk, parking stall, and picnic pad at the ADA-compliant cabin. Send an email to request plans and proposal form.

Contact:
Zach Gunsolley
515-250-3713
zach.gunsolley@dnr.iowa.gov




TAYLOR -- PROJECT # 25-04-87-02                5/28/2026                Small Project Letting
LAKE OF THREE FIRES
ACCESSIBILITY IMPROVEMENTS
Proposal Guarantee: $0
Completion Date: 10/30/2026

   This project includes constructing ADA-compliant PCC sidewalks and parking stall. Send an email to request plans and proposal form.

Contact:
Zach Gunsolley
515-250-3713
zach.gunsolley@dnr.iowa.gov




DICKINSON -- PROJECT # 26-01-30-01                6/11/2026                Small Project Letting
GREAT LAKES WILDLIFE UNIT
HODGE WPA WETLAND RESTORATION
Proposal Guarantee: $0
Completion Date: 11/27/2026

   This project is designed to restore four wetland pool areas located on the Hodge Wildlife Protection Area (WPA), Dickinson County, Iowa. Work under this project includes embankment (dike construction), excavation (spillway & borrow), tile investigation, tile breaks, and water control structures with associated piping. Email jeff.felts@dnr.iowa.gov for plans and bid documents

Contact:
Jeff Felts
515-250-3712
Jeff.Felts@dnr.iowa.gov