I-229 EXIT 4 (CLIFF AVENUE) CROSSROAD CORRIDOR STUDY
Cliff Avenue is a highly traveled commuter route for those attending Lincoln High School, coming from SE Sioux Falls and Harrisburg, and for those that work at Avera McKennan Hospital. As the City of Sioux Falls continues to grow to the south and east Cliff Avenue traffic volumes will continue to grow. It is important that we are planning for how capacity improvements could take place at this interchange. Through public meetings it has been conveyed to the study team that congestion is a concern as well as it is getting harder and harder to make a left turn from northbound Cliff Avenue to southbound I-229. This configuration certainly causes challenges in those peak periods of the day when high amounts of southbound traffic is coming along Cliff Avenue or from 41st Street. The study team based on preliminary analysis as being conducted for this overall study has determined that additional study and time needs to be put into this corridor to ensure we are planning for the proper improvement over the next 20-30 years.
In 2016, a study will be conducted to determine what improvements are necessary for the Cliff Avenue interchange to continue to serve the variety of users that it does today in the year 2035.
Determine interchange options that will serve the traffic levels in 2035.
Provide a more consistent interchange alternative as compared to other interchanges around Sioux Falls.
Determine how safety and capacity can be improved between the Southbound on ramp and 41st Street, this configuration is challenging for northbound Cliff Avenue to southbound I-229 users.
A few things are going on right now: The study advisory team has identified a need to add Exit 7 (Rice Street) as Sub-study 5 and Exit 4 (Cliff Avenue) as Sub-study 6. Based on the initial findings additional study is required to determine what future improvements may be needed at those locations. We are also working on a higher level safety evaluation on the build alternatives that are still being considered for the sub-studies. As a result of the added sub-studies and the detailed safety analysis, the next public meeting will be delayed until the summer of 2016, when preliminary alternatives for Rice Street and Cliff Avenue will be presented. The next overall public meeting for all sub studies will take place late fall/early winter 2016, continue to check the website for updates. The following links will provide information as to which of the sub-study alternatives have been eliminated from further study.
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