The city is responsible for maintaining 121.0 centerline miles of streets, which includes arterial streets (30.93 miles), and local / collector streets (90.07 miles). View the street classification map here.

Pavement repair work is divided into three categories: Routine, Preventive and Corrective, which are addressed in one of five pavement management zones of the city on a cyclic basis. The program places a priority on maintaining the roads in each zone that are in good condition (Routine and Preventive maintenance) to extend the life of the roadway surface. As street maintenance is deferred, more expensive repair strategies including surface mill and overlay or full-depth street reconstruction become necessary (Corrective maintenance). More information on the three different pavement maintenance categories.

Routine maintenance is typically performed by the City's Streets Maintenance Division staff. Preventive and Corrective maintenance is typically performed by outside contractors.

In 2021 and 2024, pavement evaluation services on each street segment in the city were performed to provide an Overall Condition Index (OCI) on a scale of 0 to 100 for each segment. This quantitative rating assists staff in determining the appropriate type of treatment based on the current condition of each street segment.

Mill and Overlay

The city’s mill and overlay program is focused on maintaining and improving existing streets before pavement conditions deteriorate to the point where full reconstruction is necessary.

Mill and overlay is a pavement rehabilitation process that removes the upper portion of the existing asphalt and replaces it with a new asphalt surface. This approach allows the City to improve roadway conditions, extend pavement life, and make the most of available transportation funding.

View Mill and Overlay project map.

Program Goal

The goal of the program is to maintain streets in good condition, address deterioration before it becomes more extensive and responsibly invest available funding to maximize the life of the city's roadway network.

How Streets Are Selected

The city evaluates pavement conditions through pavement surveys, field inspections and other available information to identify streets that are good candidates for mill and overlay.

Mill and overlay is generally appropriate when the existing roadway remains structurally sound but the pavement surface has deteriorated. Addressing these streets before significant structural failure occurs can extend pavement life and help prevent more costly reconstruction in the future.

During construction, milling exposes the existing pavement and allows the city and contractor to identify areas of deterioration that may not have been visible during the initial evaluation. Additional localized repairs may be necessary before the new asphalt surface is placed.

Timeline

Mill and overlay projects are planned annually based on the city's current pavement management zones and pavement condition ratings.

Mill and Overlay vs. Full Reconstruction

Not every street is a candidate for mill and overlay. When significant deterioration extends through the pavement and into the underlying base or subgrade, full-depth reconstruction may be necessary.

Mill and overlay provides a cost-effective option for rehabilitating streets that do not yet require complete reconstruction. By investing in pavement maintenance, the city can improve roadway conditions and extend the useful life of more streets throughout the community each year.

If you have questions about the city's Pavement Management Program, please contact Public Works at 303-762-2500.

Five Year Maintenance Plan (2021 -2026)

The maps linked below show which type of pavement maintenance has been performed and is scheduled in each pavement management zone from 2021 to 2026. Although every street will be evaluated, only those streets that meet the criteria for a given treatment type will be treated.

Upon request the city will make reasonable accommodations for alternative access to documents on this page. Submit the request here or call 303-762-2300.