The Ottawa County Road Commission was recently a participant in a culvert data collection pilot program, a project that’s part of the state of Michigan’s 21st Century Infrastructure Asset Management Pilot.
Culvert condition has been identified as a transportation issue ripe for asset management tracking. Culvert maintenance and/or replacement can be both a road safety issue and a cost issue. Culverts that fail may also mean the roadway itself fails, necessitating replacement.
About $2 million from the state’s fiscal year 2018 budget was allocated to the Transportation Asset Management Council to implement a data collection pilot to ascertain roadway culvert conditions.
The Ottawa County Road Commission applied for and was selected to be a participant in the pilot. As a participant, the OCRC received roughly $60,000 to cover training, equipment purchases and staff expenses to conduct data collection.
The intent of the pilot program is to collect culvert data that can be used to generate the following information on Public Act 51 Certified Roads in Michigan at a statewide level:
• Estimate the total number of culverts in the state.
• Benchmark the time needed and best practices to collect data.
• Develop tools and skills for agencies to collect data.
• Estimate the overall condition, range of physical characteris- tics of culverts, such as material, size, and depth.
• Benchmark estimates of agency labor (time and materials) necessary to find and collect inventory data for culverts on a dollar per mile or other production rate basis.
As part of the Road Commission’s involvement, two OCRC interns aided in the collection process beginning in early May. Interns visited one township at a time, and eventually collected data from all 17 townships. This process would’ve likely taken several years to complete without the assistance of the state’s program.
Data collected for the roughly 3,000 culverts in Ottawa County includes GPS coordinates, culvert material, type, shape, and length.
Interns also collected various data about the condition of each culvert. This information was used to develop a rating scale, which ranges from 1-10. A “1” on the scale means a culvert is in poor condition, while a “10” means a culvert is in excellent condition.
This asset management technique is similar to how engineers rate the conditions of other infrastructure in the county, such as roads and bridges. The new data will give Road Commission engineers a way to schedule inspections based on each culvert’s rating.
Another benefit will be in relation to road resurfacing. If a culvert is in poor condition, data on file can be referenced so that a culvert could be replaced before a road is resurfaced – thus avoiding the possibility of additional costs when cutting into a newly-paved road to work on a culvert.
At the conclusion of the program, participating agencies submitted data to the state to help shed light on whether the program could be expanded to other municipalities and agencies.
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