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.

PALO ALTO 21-01-74-01 Silver Lake WMA - Wetland Restoration-2026-05-14   Bid Completion detail
DELAWARE 25-03-28-01 Backbone State Park - Wastewater Improvements-2026-05-21   
VAN BUREN 24-06-89-01 Lacey-Keosauqua - boat ramp/ADA improvements-2026-05-21   
VAN BUREN 25-06-89-04 Lacey-Keosauqua - Accessibility Improvements-2026-05-21   




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




PALO ALTO -- PROJECT # 21-01-74-01                5/14/2026                Small Project Letting
SILVER LAKE WMA
WETLAND RESTORATION
Proposal Guarantee: $0
Completion Date: 10/2/2026

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

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




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