The Local Road Research Board publishes a wide range of transportation-related educational materials. For research reports, go here.
Contact Sandy McCully at 651-366-3768 for more information.
More than half of U.S. roadways are gravel roads, making them an important part of our transportation system. Learn about gravel road construction, common problems with gravel roads, and how to keep a gravel road in the best condition.
Ever wonder why your road isn’t being repaired? This Minnesota Local Road Research Board video explains why roads go bad and why sometimes the worst roads aren’t fixed first.
This is an abbreviated version of the full “Frost Damage in Pavement: Causes and Cures” video.
Frost damage is a costly aspect of roadway maintenance. This video shows laboratory experiments exploring how frost interacts with pavement, discusses methods of repairing damage and offers better designs to avoid damage in the first place.
A tragic accident occurred in Cambridge, Minn., when a driver ignored a “Road Closed” sign and drove into a 30-foot-deep trench. This video shows the choices that led to this crash, the dangers of entering a construction area, and the importance of obeying Road Closed signs.
Scott Gabrio, a MnDOT maintenance worker, was seriously injured by a distracted driver in a construction zone. This video shows what happened to Scott and what we can all do to prevent similar crashes from happening in the future.
Based on a Local Road Research Board guide to stormwater best management practices, this video shows examples of various BMPs as local engineers explain how they have used them to keep stormwater pollutants out of Minnesota lakes and streams.
Local pothole professionals, like those featured in this video, respond to citizen reports of potholes and proactively patch potholes on an interim basis during the spring thaw and on a permanent basis throughout the warmer months.
This video answers the common questions regarding stop signs, such as whether these signs really slow traffic and who decides where they’re placed.
This video addresses the frequently asked questions relating to speed limits: Do lower speeds slow traffic? And should residential speed limits differ from other types of roads?
This video shows how the City of Lakeville Street Division was able to retrofit an existing trailer to meet their current needs, thanks to funding from the LRRB’s Operational Research Assistance Program.
This tool, which can be used at the project scoping stage, assists city and county public works staff in the selection of best management practices appropriate for specific projects. This tool walks users through five steps in the selection process, and is intended for use with projects that don’t have a regional stormwater facility available.
This document presents guidelines for Minnesota county
engineers on how to interact with developers of “wind farms” (technically known as large wind energy conversion systems or LWECS). However, county engineers in other states, other road authorities, and wind power developers themselves also may find this information valuable.
This video was developed to help local agencies understand and communicate the benefits of pavement management. It is targeted at non-users of pavement management or engineers wishing to convince their elected officials to implement a program.
This booklet is intended to aid local and state highway construction, maintenance, and design staff understand the potential causes and possible remedies for bumps that occur during overlay construction.
This resource guide was created to supplement the Minnesota Stormwater Manual in regards to local government inspection and maintenance activities associated with various BMP categories. It can be used as a tool by city staff and policy makers for evaluating various BMPs to install based on anticipated long-term maintenance requirements.
This guide provides easy-to-use steps for calibrating snowplow sander controllers. It includes quick calibration sheets, calculation worksheets, and blank calibration forms for both manual and automatic controllers.
This video was developed by the Minnesota Local Roads Research Board to inform the public about the many factors to consider when developing a plan to maintain or upgrade a gravel road.
This manual, a reformatted version of LRRB Manual 2005-33, has been designed to be used as specifications for concrete repair of local city streets and county concrete pavements. It is intended to be used as supplemental specifications for constructing this work throughout the state of Minnesota.
The Minnesota Crash Mapping Analysis Tool (MnCMAT) enables users to analyze crash data based on a number of attributes.