FDOT plan for I-75/University Parkway interchange at http://goo.gl/maps/oGquM

2. Project Location
Limits
Sarasota County
MP 39.344
to
I-75 Corridor:
MP 42.615
From north of Fruitville Road to
Manatee County
MP 0.000 north of University Parkway
to
MP 0.324
Approximately 3.5 mi
University Parkway Corridor:
From Cooper Creek Boulevard/
Scope Cattleman Road to Market Street/
Interim I-75
Widening Lake Osprey Drive
and
Ultimate Approximately 1.0 mi
Interchange
2

3. Project Timeline
Public Hearing
June 2009
Step 3 Step 4
Step 1 Step 2 Right-of-Way Construction
Right-of-
Location Design
PD&E Preliminary Acquisition
Concept
Acceptance Engineering (if required)
required
(LDCA) for the
recommended
Build Alternative
on December 8,
2011
Alternatives
Public
Notice to Workshop
Proceed
April 16, 2012
Public
Public Meeting
Public Meeting
May, 2014 Hearing
Sep Apr Apr TBD TBD
2007 2012 2016
3

4. Need for Project
Provide relief from existing and projected traffic congestion
Improve the safety of the highway
I-75 Improvements
Consistent with: Provide a hurricane / emergency evacuation route
I-75 Engineering /
Multi-Modal Master
Plan
Increase regional connectivity
Sarasota-Manatee 200,000 10 Lane Capacity
County Long Range
Transportation Plan
(LRTP) 180,000
8 Lane Capacity
Annual Average Daily Traffic (AADT)
160,000
140,000
120,000
6 Lane Capacity
100,000
80,000
60,000
40,000
20,000
0
2011 2015 Year 2025 2035
I-75 S. of University Pkwy I-75 N. of University Pkwy 4

5. PD&E Interchange Alternatives
All PD&E
Alternatives
Reanalyzed during
the Design Pursuit
Preliminary Alternatives – Advanced
Existing – Add Lanes Add NB-WB Loop Diverging Diamond Interchange
Preliminary Alternatives – Not Advanced *
EB-NB Flyover EB-NB Flyover & NB-WB Loop
* Other alternatives produced acceptable levels of service without increased
construction and right-of-way costs associated with the flyover structure
5

6. Interchange Traffic Analysis
Reduced
Delay and
Annual I-75 University Parkway
Savings Ultimate 10-Lane Four Lane
Existing Add Add NB-WB Add EB-NB Add Loop and
DDI provides more System Interchange DDI
left turn green time Lanes Loop Flyover Flyover
which minimizing Configuration
potential for Mainline LOS C/D C/D C/D C/D C/D
backups and
reduces density Ramp LOS B/C B/C B/C B/C B/C
entering I-75
Ramp Termini LOS D/E C/D C/D B/D B/D
Loop and Flyover Overall Interchange Delay
Alternatives
improve one Vehicle Hours of Delay
movement with little Annual Cost
consideration to Reduction in Vehicle-
other movements Alternative AM PM Total Savings Rank
Hours of Delay
($M)
No-Build 660.2 628.6 1288.8 0 0 0
Add Lanes to Existing Diamond
292.6 307.0 599.6 689.2 8.8 5
Interchange
Northbound to Westbound Loop 245.3 205.0 450.3 838.5 10.7 4
Diverging Diamond Interchange (DDI) 177.9 157.1 335.0 953.8 12.2 1
Eastbound to Northbound Flyover 209.1 152.2 361.3 927.5 11.9 3
Northbound to Westbound Loop and
188.5 163.1 351.6 937.2 12.0 2
Eastbound to Northbound Flyover
Least Delay Time and Highest Annual Savings
6

7. Interchange Analysis – Other Factors
Reduced I-75 University Parkway
Impacts Ultimate 10-Lane Existing Add
Add EB-NB Add Loop
Four Lane System Add NB-WB DDI
Flyover and Flyover
DDI provides Interchange Configuration Lanes Loop
Comparable LOS Wetlands Low Low Low Low Low
with Less
Habitat Medium High Medium Medium High
Environmental Environmental
Impacts Species Low Low Low Low Low
Contamination Low Low Low Low Low
DDI provides
Comparable LOS
Residential None None None None None
with No ROW ROW Commercial None Medium None Medium Medium
Costs Other None None None Medium Medium
Roadway Costs Medium High Low High High
DDI provides a
Comparable LOS Construction Structures Costs Low Low Low High High
with Less Maintenance of Traffic Medium Medium Medium High High
Construction
Cost
Other Factors – Quantitative Evaluation Criteria
Factors Low Medium High
Wetlands 0-5 Acres 5-10 Acres 10+ Acres
Habitat 0-10 Acres 10-20 Acres 20+ Acres
Mitigation is Difficult and
Protected Species Mitigation not Anticipated Mitigation is Expected
Costly
Contamination Based on Contamination Risk Potential Rating (CRPR)
ROW Impacts 0-5 Parcels 5-10 Parcels 10+ Parcels and Size
Roadway Costs $100-$125 M $125-$150 M > $150 M
Structure Costs < $20 M $20-$30 M > $30 M
Temporary Pavement and
Maintenance of Traffic Limited/No Detours Major Detours and Closures
Minor Short Detouring
7

8. Interchange Analysis – Other Factors
Safety DDI Enhances Vehicular, Pedestrian, and
I-44 & Route 13
Bicyclist Safety
DDI Performance
Evaluation • Traffic Conflict Points - DDI – 14 points; Diamond 26 points
Completed by
HDR Reduces crash rate and severity – 68% crash reduction
Highlighted
Results from the
97% of Drivers feel safer
I-44 & Route 13
DDI Performance
Study
• Reduces Vehicular Delay – DDI - Two Phase; Diamond Four
Phase
Reduces Interchange Delay by 15%-60%
• Improves freeway flow by reducing density of entrance
ramp traffic
• Provides Capacity for High Volumes of Left-Turn Movements
Increases Overall Capacity by 10% -30%
• Improves Pedestrian Safety – Shorter Crossings with Signal
Protection
80% of Users say Pedestrian and Bicycle Movement is Safer
8

9. Interchange Analysis
FDOT Approved
Diverging
Diamond RECOMMENDATION – The Diverging Diamond Interchange
Interchange at
1-11-12 Scoping
Meeting
• Comparable level of service
• Improved delay times
• Reduced right-of-way costs
• Reduced construction costs
• Reduced environmental impacts
• Safest interchange for vehicles, pedestrians and bicyclists
N
University
Parkway
9

10. Project Timeline
Public Hearing
June 2009
Step 3 Step 4
Step 1 Right-of-Way Construction
Right-of-
PD&E
Step 2
Location Design Preliminary Acquisition
Concept
Acceptance
Engineering (if required)
required
(LDCA) for the
recommended
Build Alternative
on December 8,
2011
Alternatives
Public
Notice to
Proceed
Workshop Public
April 16, 2012
Public Meeting
Public Meeting
May, 2014 Hearing
Sep Apr Apr TBD TBD
2007 2012 2016
10

11. Design Schedule
Notice to
Proceed
April 16, 2012 2012 2013 2014 2015 2016
NTP April 16, 2012
Public Meeting
May, 2014 Design Survey
R/W Survey & Mapping
Phase I Design
Phase II Design
Final Plans
March 21, 2016 Phase III Design
Value Engineering
Public Meeting Final Plans
May 2014 Phase IV Design & Final Plans March 21, 2016
Noise Walls
Geotechnical
Permitting
Utilities and ITS
11

12. I-75 Existing Typical
LOS D
is acceptable for
the Interstate Three 12-ft lanes in each direction
12-ft inside and outside shoulders (10-ft paved)
88-ft median
Open drainage
Acceptable LOS through 2014
12

13. I-75 Ultimate Typical Section
LOS D
is acceptable for
the Interstate Two Special Use Lanes in each direction
(potential managed lanes)
Three General Use Lanes in each direction
64-ft Median (Multi-Modal Envelope)
Northbound Auxiliary Lane
Acceptable LOS through 2035
13

14. I-75 Interim Typical Section
FHWA Median
Crossovers on
Florida Interstate
Widen One Lane to the Inside
Highways – 9/14/07
M.P. 40.312 Advantages
• Initial Roadway Cost Savings compared to the Ultimate - $28.9M
• New lane aligns with the ultimate typical section inside lane –
minimizes “throw-away” – Future Savings
• Minimizes impacts to ITS Design Build Project – Savings TBD
• Minimizes impacts to existing signs - $243K
• Acceptable LOS through 2025
14

15. I-75 Interim Improvements
8-Lanes (Interim)
Potential Noise Barrier
Emergency Crossover
Wildlife Crossing – Errie Canal Bridges
15

16. I-75 Interim Improvements
No Right-of-Way for Stormwater Management Facilities
I-75 Lanes Transition - Ultimate General Use Location
I-75 Bridges over University Parkway – Ultimate General Use
Location
Ultimate Interchange – Minus Special Use Lanes and Bridges
16

17. University Parkway Interchange Typical
Widen/Reconstruct University Parkway
FDOT PPM - 50 mph
minimum for SIS
University Strategic Intermodal System
urban arterials
AASHTO – 30 mph
on urban arterials
(SIS) criteria
Variation for design speed
• Existing Posted Speed Limit = 45 mph
• Existing Variation for 35 mph for DDI
17

18. University Parkway Improvements
Diverging Diamond Interchange - Ultimate Interchange
Additional through lane on University Parkway
between Cattlemen Road/Cooper Creek Boulevard and
Lake Osprey Drive/Market Street
No R/W Anticipated
No Modification to Existing Access Anticipated
18

19. DDI Traffic Operations – EB University and NB I-75
Traffic on
University
Parkway crosses
paths twice
N
DDI crossings
eliminate all turning
movements from
the signalized
intersections
All left turn
movements occur
without crossing
oncoming traffic
University
University
Results in fewer Parkway
Parkway
traffic signal phases
and greater traffic
capacity
Results in far fewer
conflict points,
reducing number
and severity of
crashes
19

20. DDI Traffic Operations – WB University & SB I-75
Traffic on
University
Parkway crosses
paths twice
N
DDI crossings
eliminate all turning
movements from
the signalized
intersections
All left turn
movements occur
without crossing
oncoming traffic
University
University
Results in fewer Parkway
Parkway
traffic signal phases
and greater traffic
capacity
Results in far fewer
conflict points,
reducing number
and severity of
crashes
20

21. Video – SR 92 & I-15
21

22. Bicycle Accommodation
Bike Lane to right of outer lane
Key Holes provided at right turn lane and on-ramps
Off-Ramp Crossing protected by signal control
University N
Parkway
Key Hole at Right Turn
Key Hole at On-Ramp
Signal Protection at Off-Ramp
22

23. Pedestrians Treatment
Safety
Concern
Common Practice to keep pedestrians to
outside
Conflicts with left turn onto on-ramp
Unsafe condition with limited sight distance due to
bridge abutment
University N
Parkway
23

24. Pedestrians Treatment
Improved
Safety Pedestrian Accommodations in Median
Barrier Protected Median
Six of Eight Crossing Signal Protected
80-90% public approval
University N
Parkway
24

25. Public Involvement
Community Awareness Plan
Project Website – Not Yet Rolled Out
• www.I-75_Sarasota-Manatee.com
Public Meetings
• Meeting #1 (60% Design)
• May 2014
25

26. Comments
Kevin S. Ingle, P.E.
FDOT Project Manager, FDOT District One
801 North Broadway Avenue
P.O. Box 1249
Bartow , Florida 33831
(863) 519-2740
Kevin.Ingle@dot.state.fl.us
26