Does Mn/DOT have maintenance policies or practices for re-painting, sanding, replacement, graffiti removal, etc?
Mn/DOT does not have any policies on maintenance of noise walls and does not currently have a replacement schedule. Mn/DOT indicated that they are aware a policy is needed, as many noise walls are beginning to reach the end of their useful life. Mn/DOT indicated they soon will begin the process of developing a policy and expect to have it in place within two to three years. Mn/DOT does not have a formal policy for graffiti removal; however, it is generally performed within one week of detection. If the nature of the graffiti is deemed offensive, removal efforts will be quicker, usually the same day. Mn/DOT has a summer graffiti removal crew. During winter months, Mn/DOT uses plow drivers for graffiti removal as they are available, but generally removal efforts are still within one week of detection. Proposed location of noise wall appears to be very close to the exit ramp roadway. Are any issues expected with snow removal activities impacting integrity of the wall? Also, does Mn/DOT pr
