Bridge and Structures

Bridge and Structures

Evaluation of ECE, FRP, and Sealers for Corrosion Mitigation in Reinforced Concrete Bridges

In 1998 MnDOT commissioned a research project to investigate concrete repair strategies by using chloride extraction process, fiber reinforced polymer wrapping (FRP), and penetrating sealants. Completed in 1999, the repairs have seen 20 years of service and the long term results of such techniques are now ready to be assessed. The current research proposal will determine the effectiveness of the repair techniques implemented ...more »

Submitted by (@paul.pilarski)

Idea Submitted by : Paul Pilarski

List your MnDOT Office,District,City, County, Univ. or Other : Bridge Office, Oakdale

Idea Champion - Who at MnDOT/LRRB? : Kevin Western

Why is this a priority and what are the benefits for the State/County/City? :

Asset management and maintenance of bridges requires knowledge of not only up front repair cost, but the expected life. This project will give direct feedback on different repair and preservation techniques implemented 20 years ago on a heavily traveled bridge that remains in service. This project is important because when repair techniques are developed the big uncertainty is the predicted life estimate. There is very little long term data to substantiate repair life estimates. This study will show the effectiveness of different repair strategies from actual bridge repairs performed 20 years ago, where the repairs performed comprise both state of the art techniques and traditional techniques.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Implementation

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Bridge and Structures

Integrating Climate Change Vulnerability Metrics into BRIM and TAMS

In 2014, MnDOT conducted a pilot project to better understand the vulnerability of the state’s trunk highway system to flash flood events. MnDOT developed asset vulnerability scores for bridges, large culverts, and pipes in Districts 1 and 6 using a series of weighted metrics. This project will build on the pilot with the goal of integrating key metrics from the 2014 study into decision-making at the agency. To achieve ...more »

Submitted by (@siri.simons)

Idea Submitted by : Siri Simons

List your MnDOT Office,District,City, County, Univ. or Other : OTSM

Idea Champion - Who at MnDOT/LRRB? : Philip Schaffner; Solomon Woldeamlak

Why is this a priority and what are the benefits for the State/County/City? :

Minnesota’s climate is changing, including the frequency of larger rainfall events. Understanding how climate change impacts MnDOT’s assets will help identify infrastructure that may be more vulnerable to flooding and other issues that could impact public safety and associated cost to MnDOT.

The FAST Act requires states to consider improving the resiliency and reliability of the transportation system in planning and programming as well as developing risk-based asset management plans. At the state level, the Statewide Multimodal Transportation Plan includes a System Stewardship strategy to proactively identify risks to the transportation system in order to prioritize mitigation and response activities. The SMTP also includes a short term work plan item to identify vulnerabilities and assess risks to the transportation, specifically referencing the changing risks of flooding.

This project will provide staff with new information to help mitigate risks to our statewide infrastructure.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Implementation

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Bridge and Structures

Lightwieght Architectural Slope Panels

The pavers are 2' x 4' x 3" with a tongue and grove around the edges with a 1" architectural surface. The pavers are made with foam concrete and fibers for reinforcement and weigh less than 80lbs each.

Submitted by (@steven.lanz)

Idea Submitted by : Steven Lanz Jr.

List your MnDOT Office,District,City, County, Univ. or Other : Oakdale Construction Office

Idea Champion - Who at MnDOT/LRRB? : Steven Lanz Jr

Why is this a priority and what are the benefits for the State/County/City? :

The way that slope paving is currently done, the panels are poured in vertical strips and from the top down. With every other one being poured, the material where the contractor is working gets disturbed and never gets recompacted and the rebar doesn't get incorporated into the concrete. With the way that I'm implemting the panels is to place them from the bottom to the top and left to right. Also, you would be able to remove the panels if there is a problem under the panels. It would also take you less time to do a section of slope paving.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Implementation

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Bridge and Structures

Unmanned Aircraft Systems (UAS) - Metro District Bridge Inspection Implementation

Drones for bridge inspection research has been completed by MnDOT in multiple phases since 2015. As of summer 2017, Phase III of this research began using the senseFly albris and the Flyability Elios, a collision-tolerant drone more suited to confined spaces such as box girders, culverts, or areas that are difficult to access. Due to the success of this research, MnDOT Metro District purchased the Elios drone to supplement ...more »

Submitted by (@jennifer.wells)

Idea Submitted by : Jennifer Wells

List your MnDOT Office,District,City, County, Univ. or Other : Metro District - Bridge

Idea Champion - Who at MnDOT/LRRB? : Jennifer Wells

Why is this a priority and what are the benefits for the State/County/City? :

Access restrictions to bridges for inspection have been a main issue in the Metro District for decades. The implementation of drones for bridge inspection will allow inspectors to gain access to critical bridge components and document current conditions that otherwise have not been thoroughly documented in the past. With this access gained, quality of bridge inspection data will improve and will also improve safety by reducing traffic impacts.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Implementation

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