Thank you for taking time to contact UDOT with your concern about the vehicle noise and heavy truck traffic on 9000 South in between Mountain View Corridor and 4800 South. The heavy truck traffic diversion down to Old Bingham Highway that you saw a few years back was more than likely due to interchange construction at the 9000 South/ Mountain View Corridor intersection which would temporarily block truck access to Mountain View Corridor. Now that the access to Mountain View Corridor has been reestablished via 9000 South it makes sense that trucks have started to utilize this route again. Aside from extremely heavy loads, wide loads, and construction diversions, UDOT isn't able to dictate where commercial vehicles are allowed to drive on highways that we own. We try to assess and route these large trucks at our Ports of Entry when they enter the State of Utah, but once they are within our borders it becomes logistically difficult to keep tabs on them and where they choose to drive. Our roadways are designed for what is called a WB-67 vehicle which is a semi-truck with a trailer. We design the roadways geometrically and also structurally for this kind of vehicle so that the roadway can stand up to the load that it creates when it is driving on it. UDOT's SR-209 (aka 9000 South) is one of our roads that we designed so that large trucks can utilize it for commerce.

Regarding the request for noise walls please see the attached letter from our Environmental Division here at UDOT. I have been in contact with them and they deal with noise wall studies and installations.

Thank you again for contacting UDOT with your suggestions and concerns. Please reach out to us again if you have any other ideas or comments about the roadways that we all share.