01-18-22-WS - Laserfiche WebLink

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ARDEN HILLS CITY COUNCIL WORK SESSION - JANUARY 18, 2022 statute for assessment process. The cost estimates will be updated as more information is gathered and as the market prices change. Councilmember Holden wondered what happens in 2023? If they've done a significant amount large patching are they able to do a small segment of red areas instead of waiting to go through the whole process later. Public Works Director/City Engineer Swearingen clarified that they will have an annual street maintenance plan. Typically, seal coating on a four to five year cycle, so each street will get seal coated every four to five years. The public works department will take the seal coat project plan or the street maintenance plan and then assess the roads for where those large area patches are needed. He hasn't created that plan yet, but because Bussard and Lametti are on a PMP, they could look at adding those two segments to the 2023 maintenance plan. That allows the 2022 project to be completely closed out and then the large area patches won't conflict with construction projects from this year. Public Works Director/City Engineer Swearingen said there was a time when the emulsion being used in seal coating didn't bond appropriately to the asphalt. Everyone was having the issue of delamination where the emulsion was separating the chip seal from the pavement. Since then MnDOT has redesigned the mix for that emulsion and they're not seeing that issue anymore. Mayor Grant said they should put this report down as an annual review. He felt it was nice to have an automated, objective evaluation. Councilmember Holden questioned whether they would want to use the same company. Public Works Director/City Engineer Swearingen said the delay was in part due to the company accepting too many projects and not having enough vehicles. And also that the city contracted with them later in the fall. We can't evaluate our streets until spring and once the pavement is drier. Staff will make sure to get the contract done earlier and make a stipulation of when the survey needs to be completed. Councilmember Radziej asked if the equipment gave them any real depth or imaging of what's underneath the asphalt surface. Public Works Director/City Engineer Swearingen responded that this does not take a profile of the road segment, this is just a surface scan of the of the road. Staff will be taking pavement cores to see what shape the pavement section is in. They'll also be taking some soil borings in some locations. Full depth reconstruction would be in areas where they believe utilities would need to be replaced. A brief review of the condition of the existing utilities shows they don't need to be replaced, and there isn't a history of breaks in the areas, so they won't be doing full reconstruction. They might be doing some full depth reclamation, for example on Norma Avenue just north of Dawn Circle. It's quite deteriorated and they may have to do some full depth mill and overlay. If a full depth full reconstruction is needed, it will be due to utility replacement rather than the pavement itself being in bad shape.