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Highway 280 Corridor Study Team January 10, 2002 Page 2 An alternative concept is to develop an interchange at Broadway. This would convert Highway 280 to a freeway if the County Road B intersection were closed. This would solve many of the operational problems but would require a higher amount of funding and acquisition of some right-of-way. Three different alignment alternates for a potential interchange have been developed. The first is called the Central Alternate, which essentially keeps the Highway 280 mainline roadways at their existing location. The East Alternate moves the roadway to the east to minimize the impacts on the commercial developments in the southwest and northwest quadrants. The West Alternate moves the roadway to the west in an effort to reduce impacts on the southeast quadrant homes and the northeast area golf course. All of the alternates have impacts not only on right-of-way, but also on the operation of the interchange and the roadways. Attached is a summary of the concerns and a comparison of the three alternates. One of the considerations in developing either an interchange or other modifications at Broadway is the impact on future improvements to other sections of Highway 280. The Larpenteur interchanges are substandard and have operating problems both on Larpenteur Avenue and on Highway 280. A concept design has been developed in the past to address these design deficiencies but funding for the overall project has not been a�ailable. Funding is available for improvements to the expressway portion of Highway 280. If improvements to Highway 280 are staged, it may be possible to use several smaller sources of funding to implement the final design for Highway 280 in increments. As an example, the future alignment (reconstructing the lanes of Highway 280) could be built as Stage 1 and an interchange at Broadway as Sta�e 2. This would develop more pressure to complete Highway 280, making funding for improving the mterchanges at Como Avenue and Larpenteur Avenue easier to obtain. This concept of incremental improvements has been used in the upgrading of Highway 100, the upgrading of Highway 36 through Roseville and Maplewood, and the upgrading of Highway 61 in south Washington County. There is a significant amount of additional detailed information which can be provided to the Team as part of our study. We will provide more detailed information when we have the opportunity to discuss the concepts with staffs and elected officials at the workshop. Sincerely, SHORT ELLIOTT HENDRICKSON INC. .�� (/�t� (�� Glen Van Wormer, P.E. Senior Transportation Engineer sah Attachment \�spfi les2�cotpdoc\wp�p'ojectskskosev�020/ �c\bloom j l0. doc