Hogan Road/Exit 187 Proposed Improvements

1. Hogan Road/Exit 187 Proposed Improvements Public Informational Preliminary Public Meeting June 9, 2016

2. Overview • History • Current Conditions • Purpose and Need • Proposed Solution • Diverging Diamond Interchange (DDI) • Benefits at Exit 187 • Videos • Next Steps • Questions and Answers Questions

3. History • 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

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

5. 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. 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. Current Conditions – Bridge Hogan Road Bridge has approximately 10+ years of remaining service life

8. What City/Town do you live in? • Bangor • Brewer • Veazie • Hampden • Other

9. What concerns you most about the current interchange? (Three clicks, Click your highest priority first. You can click an answer more than once) • Safety • Congestion • Lack of Bike/Ped Access

10. Purpose and Need Statement • Solve existing safety, congestion, and access issues by: • Reducing crashes by up to 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.

11. Proposed Solution Diverging Diamond Interchange • a.k.a. Double Crossover Diamond • This is the only solution to meet the objectives of the purpose and need.

13. What is your opinion of the proposed DDI? (One Click) • Strongly Agree • Agree • Somewhat Agree • Neutral • Somewhat Disagree • Disagree • Strongly Disagree

14. 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%)

15. Diverging Diamond Interchange Improves Mobility and Alleviates Congestion by: • Accommodating high left-turn movements onto and off of I-95 (Off-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

16. 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

17. 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

18. 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

19. Diverging Diamond Interchange

20. Diverging Diamond Interchange Reduced Conflicts MoDOT, DDI: Lessons Learned, May 2010

21. Conventional Diamond Diverging Diamond

22. Existing Conflicts Types of Crashes that would disappear with a DDI

23. Reduced Conflicts with a DDI 50% Crash reduction in existing DDI’s

24. Signal Phasing

25. Signal Phasing

26. Pedestrian/Bicycle Accommodations Shared path in median SHARED PATH THRU LANE THRU LANE THRU LANE THRU LANE THRU LANE

27. DDI History in U.S. Diverging Diamond Interchange Locations • 66 DDIs built in U.S. since 2009 • 28 states have DDIs built or currently under construction • 17 more states have DDIs in study or design 1st DDI – Springfield, MO (opened June 2009) 15 DDIs currently in MO

28. DDI Benefits at Exit 187 • Reduces crashes by up to 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

29. Application to Exit 187 Videos USDOT, FHWA (informational video on DDIs)

30. Videos https://youtu.be/bu-Jqx2LpMo Side By Side https://youtu.be/bWpi7mZE688 Eastbound left and through https://youtu.be/sk89TyRTxhY I-95 Northbound onto Hogan Road Bridge

31. Next Steps • Municipal and Community support • Pre-construction Engineering (Design – 2016-17) • Another Public Meeting • Construction (2018 or 2019 at the earliest)

32. Questions and Answers • Please State Name • Additional “Clicker” question after questions

33. What is your opinion of the proposed DDI? (One Click) • Strongly Agree • Agree • Somewhat Agree • Neutral • Somewhat Disagree • Disagree • Strongly Disagree

35. How to give us additional input • Project Website • www.mainedot.gov • MySidewalk Interactive Site

36. Thank you!