1. Integrity - Competence - Service Hogan Road/Exit 187 Proposed Improvements Public Informational Meeting June 9, 2016

2. Integrity - Competence - Service  History  Current Conditions  Purpose and Need  Proposed Solution o Diverging Diamond Interchange (DDI)  Benefits at Exit 187  Next Steps Overview

3. Integrity - Competence - Service  1960: I-95 Hogan Rd interchange built  1978: Bangor Mall built, interchange signalized  1983: Hogan Rd bridge has major widening  2001: Stillwater Ave interchange built  2011: Bangor I-95 Corridor Study  Increased Development and Developer Projects  Present: Challenges persist at Hogan Road History

4. Integrity - Competence - Service SB Intersection 34 crashes (2011-2013) CRF=1.13 NB Intersection 38 crashes (2011-2013) CRF=1.22 SB Off-Ramp 16 crashes (2011-2013) CRF=3.87 Current Conditions - Safety 94 crashes in 3 years, 72 at the two signals 36% of crashes involve injuries Three high crash locations

5. Integrity - Competence - Service Current Conditions - Congestion Exit 187 is Maine’s busiest diamond interchange 12.7 million vehicles annually 35,000 vehicles per day at Interchange (AADT) 22,000 AADT on Bridge Backups onto I-95

6. Integrity - Competence - Service Current Conditions – Access Pedestrian Safety no sidewalks and no shoulders on bridge Pedestrians in the past have used culverts to cross under I-95

7. Integrity - Competence - Service Current Conditions – Bridge Hogan Road Bridge has approximately 10+ years of remaining service life

8. Integrity - Competence - Service Solve existing safety and congestion issues by: Reducing crashes by approximately 50%; Increasing mobility and alleviating congestion to prevent backups onto I-95; Providing an adequate and safe access for pedestrians and bicyclists; Utilizing the existing life of the current bridge as much as practicable; and Minimizing disruptions to businesses and traffic. Purpose and Need Statement

9. Integrity - Competence - Service Proposed Solution Diverging Diamond Interchange This is the only solution to meet the objectives of the purpose and need.

10. Integrity - Competence - Service Diverging Diamond Interchange Improves Safety by: Reducing the number of conflict points Lowering speeds to minimize crash severity Making wrong-way entry onto the interstate extremely difficult (Existing Diverging Diamond Interchanges have shown to reduce crashes by approximately 50%)

11. Integrity - Competence - Service Diverging Diamond Interchange Improves Mobility and Alleviates Congestion by: Accommodating high left-turn movements onto and off of I-95 (O ff-ramp capacity increased by 50 to 100%) Reducing delays and preventing backups with a 2-phase traffic signal that has short cycles ( Delays reduced by 15 to 60%) Providing easy U-turns for missed exits

12. Integrity - Competence - Service Diverging Diamond Interchange Provides Safe Pedestrian and Bicycle Access by: Allowing for a protected multi-use path in the bridge median Pedestrians only have to cross one direction of traffic at a time at intersections

13. Integrity - Competence - Service Diverging Diamond Interchange Utilizes the existing life of the current bridge as much as practicable by: Maintaining the existing width of bridge Utilizing the existing life of bridge, 10+ years Supporting future bridge improvements or replacement

14. Integrity - Competence - Service Diverging Diamond Interchange Minimizes disruptions to businesses and traffic by: Needing no additional ROW for adding traffic lanes Reducing project costs and reducing construction time to one construction season

15. Integrity - Competence - Service Diverging Diamond Interchange

16. Integrity - Competence - Service Conflict Points Interchange Type Typical Diamond Diverging Diamond Diverging108 Merging108 Crossing102 Total3018 MoDOT, DDI: Lessons Learned, May 2010 Diverging Diamond Interchange Reduced Conflicts

17. Integrity - Competence - Service Conventional Diamond Diverging Diamond

18. Integrity - Competence - Service Existing Conflicts Types of Crashes that would disappear with a DDI

19. Integrity - Competence - Service Reduced Conflicts with a DDI 50% Crash reduction in existing DDI’s

20. Integrity - Competence - Service Signal Phasing

21. Integrity - Competence - Service Signal Phasing

22. Integrity - Competence - Service Pedestrian/Bicycle Accommodations THRU LANE SHARED PATH Shared path in median

23. Integrity - Competence - Service DDI History in U.S. Diverging Diamond Interchange Locations 57 DDIs built in U.S. since 2009 26 states have DDIs built or currently under construction 19 more states have DDIs in study or design 1st DDI – Springfield, MO (opened June 2009) 15 DDIs currently in MO 1st DDI – Springfield, MO (opened June 2009) 15 DDIs currently in MO

24. Integrity - Competence - Service Reduces crashes by approximately 50% Increases mobility and alleviates congestion to prevent backups onto I-95 Provides an adequate and safe access for pedestrians and bicyclists Utilizes the existing life of the current bridge as much as practicable Minimizes disruptions to businesses and traffic DDI Benefits at Exit 187

25. Integrity - Competence - Service USDOT, FHWA (informational video on DDIs) Application to Exit 187 Videos

26. Integrity - Competence - Service Next Steps  Municipal and Community support  Pre-construction Engineering (Design – 2016-17)  Construction (2018 or 2019 at the earliest)

27. Integrity - Competence - Service Questions and Answers