10.1 SR 08-01-2022 - Laserfiche WebLink

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HIGHWAY 10 CORRIDOR STUDY - FINAL REPORT Secondary Evaluation To better understand impacts and help establish a future access vision associated with the long- term grade -separated corridor vision, the Study Team developed several concept alternatives for the corridor. The concept alternatives do not indicate a directive or design that must be implemented, but reasonable alternatives that helps to set the vision for future access at each location. Additional detailed analysis, review, and environmental consideration will need to be conducted in the future to determine specific design options for each grade -separated location along Highway 10. Based on the corridor context and guidance from the PMT and TAB, it was determined that two grade -separated locations would be evaluated for the Highway 10 Corridor within the study limits. The study corridor was divided into a north segment and a south segment. The north segment focused on the area from the Highway 101/169 interchange through the Twin Lakes Road area. The south segment focused on the area from Kelly Farms Road to Alpine Drive. North Segment Previous planning efforts point to Twin Lakes Road as the best option for grade -separated access in the north segment of the corridor. The 171st Avenue location, where a signal currently exists, was ruled out as the long-term interchange location due to the high number of impacts anticipated because of the dense development adjacent to the intersection, as well as its proximity to the existing Highway 101/169 interchange. The 171st Avenue location also would not meet MnDOT's preferred interchange spacing requirements of 1 to 2 miles as it is too closely spaced with the exiting interchange at Highway 101/169. Several interchange types were evaluated for the Twin Lakes Road location including more traditional options, such as a standard diamond or folded diamond, and more innovative options, such as a buttonhook and overpass and a split high T configuration. These options were developed (see Figure29) at a conceptual level to better understand potential impacts. These concept layouts are also in AppendixE. As noted previously, the concept alternatives do not indicate a directive or design that must be implemented, but reasonable alternatives that help to set the vision for future access at each location. Additional detailed analysis, review, and environmental consideration will need to be conducted in the future to determine specific design options for the Twin Lakes Road location. a GHH'4Y `oPage 1 I �FRIOOR��