Preliminary Engineering Study Open House # 2 June 6, 2018 PREPARED FOR: PREPARED BY:
Agenda Background and status of preliminary engineering study County Road 26 design summary County Road 63 design summary County Road 26 and County Road 63 intersection alternatives evaluation and technical recommendation Stormwater management review Next steps
Study Area
Study Purpose and Need Address safety issues Site lines, steep slopes, lack of median, shoulders and turn lanes No pedestrian or bicycle facilities Improve mobility and operations Improve capacity through expansion Access management at minor intersections and driveways Intersection operation and safety along the corridor Accommodate local residential and commercial development Future traffic volumes will magnify safety deficiencies without improvements Allow coordination with development as it occurs
Scope of Preliminary Engineering Study 4-lane expansion of County Road (CR) 26 Alternatives evaluation of CR 26 and CR 63 intersection Including limits of CR 63 build-out Access management evaluations Stormwater management treatment needs CR 26 corridor intersection evaluations CR 63, Ames Crossing, and Lone Oak Road
Preliminary Study - Status Update Open House #1 November 6, 2017 City Council updates November 2017 Neighborhood meetings December 2017-January 2018 Technical analysis November 2017-May 2018 Open House #2 June 6, 2018 Next Step Finalize technical recommendation June/July 2018
County Road 26 Preliminary Design 4-lane expansion with divided median Multi-use path on each side of roadway Access management Full access: Lone Oak Drive, Ames Crossing, Archer Trail, County Road 63, and Alverno Avenue (future) Right-in/Right-out: Holiday Lane, Arkansas Avenue, private driveway entrances
County Road 63 Preliminary Design Initial assumption of 4-lane expansion Extension from Argenta Trail (CR 63)/Hwy 55 project. 2-Lane divided section proposed Traffic projections of 10,000 ADT 4-lane considerations begin at approx. 18,000 ADT Right-size County Road 26/63 intersection 2-lane section is adequate until I-494 interchange is built Meets project safety and mobility goals Access management Full access: 65 th Street ¾ access: 67 th Street and 72 nd Street Right-in/Right-out: 71 st Street (future)
Future I-494/County Road 63 Interchange Metropolitan Council and MnDOT have approved future interchange access for County Road 63 at I-494 First step of many to final approval of a potential interchange The County will continue to evaluate and plan for future interchange Not currently in City or County CIP s Timing of interchange construction based on regional traffic growth and funding availability Difficult to project exact timing County Road 63 design accommodates expansion when the interchange is built
CR 26/CR 63 Intersection Intersection Evaluation
CR 26/CR 63 Intersection Evaluation Alternatives Option A Proposed Improvements County Road 26 Hwy 55 to Hwy 3 County Road 63 Amana Trail to 65 th St 65 th Street CR 63 to Argenta Trail Intersection Control Standard intersection or roundabout Final intersection control to be determined in final design $31-35 million project cost
CR 26/63 Intersection Evaluation Alternatives Option B Proposed Improvements County Road 26 Hwy 55 to CR 63 County Road 63 Amana Trail to CR 26 Intersection Control Roundabout Maintains access for Argenta Trail north of CR 26 Better facilitates transition from 4-lanes to 2-lanes on County Road 26 $20-23 million project cost
CR 26/63 Intersection Evaluation Alternatives Option C Proposed Improvements County Road 26 Hwy 55 to Hwy 3 Intersection Control Standard intersection with traffic signal Roundabout not appropriate Future realignment of County Road 63 (Argenta Trail) $22-26 million project cost
Evaluation Matrix
CR 26/63 Intersection Evaluation Recommendation Technical Recommendation Option A Meets project safety and operations goals Provides full mobility of pedestrian and bicycle movements Addresses current and future traffic projections Full layout displayed on wall
Stormwater Management Review Regional Basin Mitigation 14.3 Acre-Ft Stormwater Treatment 9.5 Acre-Ft Permanent Drainage and Utility Easements 16.5 Acres
Next Steps Selection of study preferred alternative June/July 2018 Evaluation of project funding and scope of work for 2021 construction project July/August 2018 Dakota County, City of Inver Grove Heights, and City of Eagan No special assessments are being considered Begin final design 2019 Contingent on final funding plan and authorization of project Construction 2021 Contingent on final funding plan and authorization of project
Preliminary Engineering Study Open House # 2 June 6, 2018 PREPARED FOR: PREPARED BY: