1. T.H. 23 / South Saratoga Street Reduced Conflict Intersection and Pedestrian Overpass Project Project hearing
October 14, 2014
City Council
Presenters
Glenn Olson, Director of Public Works/City Engineer
Ben Martig, City Administrator

2. Interregional Corridor Goals IRC Goals
Maintain safe, timely, and efficient transportation service between regional centers.
Enhance economic vitality of the State.

3. Interregional Corridor Standards IRC Performance Standards
1-Hour average travel speed
55 mph average for TH 23
60 mph average for I-90
Limited direct access along the corridor.
½ mile full access spacing in-town
1 mile full access spacing in rural areas

4. Reduce number of traffic signals Consolidate access points
Interregional Corridor Improvement Strategies
Reduce number of traffic signals
Consolidate access points
Add passing opportunities
Encourage development of local traffic alternative routes.

5. 45 applications 1 of 10 funded
Corridor Investment Management Study (CIMS) Grant T.H. 23 / Saratoga Street
As part of the overall CIMS initiative and consistent with the Minnesota GO Vision, MnDOT provided $30 million through a competitive solicitation in 2013 to fund trunk highway projects that improve quality of life, environmental health or economic competitiveness.
CIMS Award $3,500,000
Total Project Cost $5,697,356
Year of Construction 2015
45 applications 1 of 10 funded
$100 million requested $30 million funded

6. Alternate Intersection Designs Reduced speed limits
T.H. 23 / Saratoga Street Reduced Conflict Intersection and Pedestrian Overpass (Revised Layout)
Alternate Intersection Designs
Reduced speed limits
Signalized Intersection
Roundabout
Vehicle overpass
with exit lanes
Without exit lanes
Alternate Pedestrian Bridge & Sidewalk Design
Pedestrian underpass
Bridge location alternates N

7. Reduced Conflict Intersection (RCI) Increasing safety; decreasing T-Bone (right angle) crashes
Improved safety—Studies show a 70 percent reduction in fatalities and a 42 percent reduction in injury crashes where RCIs are used.
A typical four-lane divided highway intersection has 42 possible vehicle conflict points. RCI's reduce conflict points to as few as 18.
Where in Minnesota are RCIs located?
County Rd. 24, Willmar
Hwy 169 and County Rd. 3, Belle Plaine
Hwy 36 and Keats Avenue, Lake Elmo
Hwy 10 and County Rd. 8, Becker
Hwy 169 and 173rd St., Jordan
MnDOT also plans to build additional RCIs in the next five years in Cologne, Cannon Falls, Vermillion, Zumbrota, Cotton, Ham Lake, Ramsey and Oakdale.

8. TRAFFIC SAFETY 2014 Uncontrolled Median Intersection
Reduced Conflict Intersection “J Turn”
click for video
click for video

9. T.H. 23 / Saratoga Street Reduced Conflict Intersection and Pedestrian Overpass

10. Pedestrian Safety
Pedestrian Safety continues to be heavy on Saratoga Street.
Future residential growth south of Highway 23 is expected to increase pedestrian crossings and traffic along Saratoga.
September 2014, 7:35 a.m.
September 2014, 7:30 a.m.
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11. Pedestrian Images (May 2014)

14. Manufactured Home District Alternate Access
Western Community
Action
Pedestrian Friendly Crossing & Pedestrian Bridge Access
Broadmoor
Valley

16. Pedestrian Overpass Project Example City of Bemidji, Minnesota (population 13,528)

17. Accident on Hwy 23 and Saratoga Street on Monday, June 4, 2014
The accident involved a cross over highway 23.
This movement will be eliminated in the new intersection design.
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18. MnDOT Speed Study September 4, 2014
BACKGROUND
Current posted speed 55mph
Last Hwy23 Marshall corridor speed study was 2000.
School zone speed study
Council resolution 2014 requesting study initiated the review.
Study included Hwy 23 corridor through Marshall.
FINDINGS
The posted speeds are accurate and no change is recommended.
The 85th percentile speed is the benchmark for safest & appropriate speed.
85th percentile speed range from 59-66mph.
55 mph posted speed shows acknowledgement of sustained crash locations in designating the official speed limits.

19. Accident on Hwy 23 and Saratoga Street on Wednesday, October 8, 2014
The accident involved a cross over highway 23.
This movement will be eliminated in the new intersection design.
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20. G.O. 2015A Bond Summary Financing
Final Financing
Funding Source
Funding Amount ($)
MnDOT Corridor Investment Management Study (CIMS) Grant
$3,500,000
MnDOT Municipal State Aid System (MSAS) Funds
$1,220,000
City – G.O. 2015A Bond (par amount)
$1,265,000
Total
$5,985,000
G.O. 2015A Bond Summary Financing
$1,710,000 General Obligation Bonds
15-year term
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