Maintenance Operations

(@maria)

Maintenance Operations

Performance of Overlays

The performance of overlays differs by location in the State of Minnesota. Pavement failures, including potholes, occur in a broad range of service life, from 10 to 20 years. Research is needed to better understand the broad range of overlay performance including contribution factors such as mix design. State Aid Pre-Screening Meeting input: Performance of overlays differs by location. In some instances, overlays... more »

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(@maria)

Maintenance Operations

Notifying the public of county road and city street closures in common smart phone map apps

Most counties and cities are not well set up to distribute information about highway segments that are under construction or closed with a designated detour route. Carver County created their own Construction & Closures map online application, however most counties and cities don't have the staff or resources to generate the type of GIS database/mapping to support this application. In addition, this information ideally... more »

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(@maria)

Maintenance Operations

Asphalt Film Thickness vs a chip seal at 1 year ‐ B/C analysis

A better understanding and comparison of the benefits of higher Asphalt Film Thickness (AFT) and chip seal is needed to inform pavement maintenance techniques and to optimize cost effectiveness. The research should include a benefit-cost analysis at 1 year of service life and explore the benefits of implementing both treatments at the same time. State Aid Pre-Screening Meeting input: Benefits of higher AFT... more »

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(@maria)

Maintenance Operations

Cost life cycle of local roads

It is often challenging for the public and policy makers to understand the maintenance cost of local streets over the service life of a roadway facility. Education/Training tools are needed to help local agency staff communicate these costs and inform budgets over the service life of a roadway facility. State Aid Pre-Screening Meeting Input: Education to help city staff to understand how a local street will cost over... more »

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(@maria)

Maintenance Operations

Mill and overlay ‐ BMP

There are a variety of mill and overlay methods and a variety of crack sealing methods used for Minnesota roadways. Understanding how well these methods peform in terms of pavement life and the minimization of reflective cracking would be beneficial to roadway agencies. Several alternative methods have been used in recent years and a review of the effectiveness of current best practices would help inform cities and... more »

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(@maria)

Maintenance Operations

Effectiveness of fog seal on chip sealed low volume roads

Local units of government have experience using a fog seal over chip sealed pavement. This practice is often used on low volume roads with residential driveways. Residents often complain about the impact of the fog seal on driveways. Research is needed to understand the effectiveness of fog seal over chip sealed pavements and results interpreted in outreach materials to help educate stakeholders on the benefits of... more »

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(@amber.dallman)

Maintenance Operations

Best Practices for Winter Maintenance for Pedestrian Safety and Accessibility

Pedestrian fatalities on US roadways have been increasing in recent years. According to the National Highway Traffic Safety Administration, there were nearly 6,000 pedestrian deaths in traffic crashes in 2016, representing 16% of all traffic fatalities (NHTSA. Traffic Safety Facts. 2016 Data). This was an increase from 4,700 and 11% in 2007. In Minnesota, while other crash types of traffic fatalities have declined, deaths... more »

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(@craig.collison)

Maintenance Operations

Evaluation of fatigue on snow plow drivers and evaluation of aids to assist drivers in recognizing and dealing with fatigue

MNDOT snow plow drivers are asked to work various shifts, considerable overtime and many consecutive days during snow and ice activities. Fatigue is affected both by the time on task and intensity of task and MNDOT plow drivers both work long hours under and challenging conditions. There is commercially available technology that would inform the drivers and their supervisors if a driver is showing signs of fatigue. The... more »

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(@emily.bos)

Maintenance Operations

Side by Sides for Truck stations

I think that it would be a good idea to get the truck stations side by sides. I think they would have many benefits to the maintenance folks. Some of the benefits would be easier to get in and out of, more access to places pickups cant go, narrower for narrow shoulders, small truck station would have more then one small vehicle to use (a pickup and a side by side), they would use less fuel, some of the boxes on the pickups... more »

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(@jerry.auge)

Maintenance Operations

Impacts and degradation to concrete and bituminous pavements using additives to rock salt and brine for snow and ice control

Ramsey County has recently noticed rapid deterioration of some of its bituminous pavements that are in the second half of their life cycle or near the end of their life cycle. In the spring of 2018, maintenance staff noticed significant raveling and stripping of pavements wear course surface on McKnight Road. The entire roadway surface in specific locations deteriorated to the binder course of the pavement section.... more »

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