© 2014 HDR, all rights reserved.

Informational MeetingJune 1st, 2015

7:30 pm to 9:00 pm

Interstate 229 Major Investment Study Exit 6 – 10th Street

Sub-Study

Benson Road

60th Street N.

Benson Road

60th Street N.

Study Area Map

I-229 Corridor Study

Meeting will focus on:Exit 6 – 10th Street

Solberg Avenue Overpassto60th Street N. Overpass

10th Street

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60th Street N.

Study Advisory PartnersSouth Dakota Department of Transportation (SDDOT)

South Dakota Highway Patrol

City of Sioux Falls

Sioux Falls Metropolitan Planning Organization (MPO)

Federal Highway Administration (FHWA)

Exit 6 (10th Street) Crossroad Study

Goals• Reduce traffic congestion • Develop Corridor Growth Plan to meet

traffic demands but minimizing impacts to developed properties

• Improve pedestrian mobility• Improve safety for corridor users• Identify improvements to the

interchange as well as the 10th Street and Cleveland Ave intersection

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10th Street Corridor OverviewFr

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10th Street Corridor Overview

Downtown viaducts over the existing rail yard and

river.

Signal spacing not ideal to maximize traffic flow.

10th Street Corridor Overview

10th and Cliff intersection improvements in 2010, reconstruction due to significant crash

problems and need for capacity.

10th Street Corridor Overview

Multiple driveways and side streets affect corridor

progression.

10th Street Corridor Overview

Access from side streets difficult and impedes travel

speeds along Corridor

10th Street Corridor Overview

Interchange crashes typically at off ramps due to ramp queuing; lengthening

off ramp south of the interchange has helped mitigate this issue.

Distance between Cleveland Avenue & I-229 causes congestion due to

overlapping traffic backups; crash rates higher than normal at this location.

Single point intersection projected to be at capacity by 2035.

10th Street Corridor Overview

Cleveland Avenue expansion recommended between 12th Street and

Rice Street in 2008 study.

10th Street & Cleveland Avenue intersection projected to be over

capacity by 2035.

10th Street Corridor Overview

Numerous driveways along 10th Street impacts traffic flow and increases

potential for conflicts.

Adding lanes to 10th Street would be difficult due to adjacent businesses.

10th Street Corridor Overview

Intersection reconstructed in 2014 with dual left turn lanes and right turn lanes to address high

crash rates (48 crashes in 4 year period).

Connection to 12th Street in close proximity to Sycamore Avenue making it difficult to

enter/exit 10th Street.

What you will be able to see tonight: 8 Interchange Conceptual Options 4 Corridor Options Median Changes or Driveway Closures to

Improve Safety

Conceptual Ideas for 10th Street Corridor

10th Street / I-229 Interchange Diverging Diamond Option

What you will be able to see tonight: 8 Interchange Conceptual Options 4 Corridor Options Median Changes or Driveway Closures to

Improve Safety

Conceptual Ideas for 10th Street Corridor

10th Street Median Divided 4 Lane Roadway Option

Finalize Composite Comparison Matrixo Traffic Assessmento Environmental Screeningo ROW Impactso Overall Costso Public Involvement Support

Complete additional Traffic Operations analysis on a reduced number of options based on the screening activities

Develop Priority Phasing Plan for I-229 Corridor and Sub-Study Corridor

Schedule and Conduct next public meeting

Next Steps for 10th Street

© 2014 HDR, all rights reserved.

Thanks for Attending!!!!!

Interstate 229 Major Investment Study Exit 6 – 10th Street

Sub-Study

Benson Road

60th Street N.

Benson Road

60th Street N.PROJECT CONTACTS:Jason Kjenstad – HDR Engineering, Inc.605-977-7740 or jason.kjenstad@hdrinc.com

Chris Malmberg – HDR Engineering, Inc.402-399-4959 or chris.malmberg@hdrinc.com

Shannon Ausen – City of Sioux Falls605-367-8607 or sausen@siouxfalls.org

Steve Gramm – SDDOT Project Development605-773-6641 or steve.gramm@state.sd.us