Road Construction Projects

Project Updates

Linn County works to minimize the disruption caused by road construction, and in so doing, wants to keep the public aware of construction projects, timelines, and traffic impacts. Construction projects often mean traffic delays and disruption, but they also mean improved infrastructure and improved traffic flow.

To receive detailed updates on Linn County's construction projects, select the ’Sign Up for Notifications’ bar located on this page. Type in your email address and select "Sign In."  Scroll to the "Alert Center" section of the page to find specific construction projects. Select the type of notification and the method (email or text message) desired for the specific construction projects that interest you. Please contact our office at 319-892-6400 if you need assistance with this service or if you do not see a project listed that you are interested in.

View an interactive map that contains information about Linn County secondary road and bridge construction projects scheduled for 2023.

Project Types

Concrete Paving

The roads scheduled for concrete overlays will be closed to all traffic during paving. Local traffic will be allowed on the concrete pavement as soon as joints are sealed and maturity is reached (typically within 40 hours). The contractor is required to allow local access as soon as possible. All residents adjacent to the concrete paving are encouraged to plan travel accordingly during construction. There will be times when access is not possible for local traffic. If this is a concern, parking your vehicle at the nearest point of relief and walking to your home will be required.

Grading Projects

A typical grading project involves replacing or extending crossroad and entrance culverts, cleaning ditches to improve drainage, curing snow trap areas, removing obstructions (trees, landscaping, headwalls) within the right of way, flattening slopes, etc. Traffic count determines the amount and type of rock placed on the road. Gravel roads with a traffic count over 150 vehicles per day (VPD) will generally receive a 3-inch macadam stone (1-3-inch sized rock) base with a 3-inch choke stone (three fourths inch plus sized rock) surface layer.

Future Projects

View the 2024-2028 5-year Construction Program (PDF).

Local Road Safety Plan

In 2018 Linn County partnered with the Iowa DOT and Kimley-Horn (consultant) to develop of Local Road Safety Plan and it was updated in 2023.  This plan provides a basis for systemic safety improvements based on risk factors.  The plan assists Linn County in making informed, prioritized safety decisions. 

View Linn County's Local Road Safety Plan (PDF).