March 1, 2011

Why an interchange at this location? TH 15 Corridor Study 2007 Nine Signalized intersections Six in Top 50 High Crash Cost Study outcome = convert to freeway –Price tag $300 Million+ –Phased construction where possible

Why an interchange at this location? TH 15 & Stearns CSAH 120 Border between Sartell and St. Cloud Medical Campuss on west side –+$70 million construction 100 Acre retail complex under construction on east side –Sams Club, Super WalMart, assorted smaller retail

Why an interchange at this location? NB dual left turn lanes 1500 length Signal at 81% capacity Future volumes

Why an interchange at this location? Greater Minnesota Interchange Solicitation –Promote Economic Development –Safety Concerns –$10 million –Local cost participation

Why a Diverging Diamond Interchange? Standard Diamond Signals vs Roundabouts? High left turn volumes Eight lane bridge

Why a Diverging Diamond Interchange? Single Point Diamond –Better capacity –Big bridge –Higher Cost –Cant expand

Why a Diverging Diamond Interchange? DDI –Moves more traffic with fewer lanes –Smaller bridge –Removes left turns – fewer crashes and less delay –Reserve capacity –18 conflict points vs 30

Design Constraints Awkward county road alignment Existing commercial development Two neighborhoods in SE quadrant, one a potential environmental justice issue Sauk River Utility crossing Pond Water Table?

Design Constraints Medical Clinics Sams Club CentraCare Hennens Neighborhoods Co. Rd 120 TH 15

Current Layout

Public Meeting

Meeting Outcome - Positive comments - Build it Now! - Online links to video from Missouri sold the concept

I-270 & Dorsett Road - St. Louis, Missouri – Aerial

I-44 and Route 13 Springfield, Missouri – Drivers View