1. I-75 Ramp Widening Project Scope of Project – Safety Project to Widen I-75 NB Exit Ramp (Ramp A) and I-75 SB Exit Ramp (Ramp C) at the I-75/US 25W Interchange to include Dual Left Turn Lanes onto NB US 25W. Project Needed to alleviate traffic congestion 19,000 vehicles per day Arena (Seating Capacity of 6500) Oak Grove School and Corbin Central Primary School (Morning and Afternoon Congestion) Corbin Baptist Hospital

2. Ramp A Project Highlights Proposed Remove 873 feet of Guardrail Install 775 feet of Guardrail Remove Roll Curb on Lt Side of Ramp Widen 19 Feet (JPC 10-in Pavement) Place 12,264 cubic yards of Embankment Extend 8 x 6 Concrete Box Culvert (34 Feet) & Place Light Weight Fill (to place light weight fill cost as much as removing and replacing culvert) Mill and Resurface Asphalt Approach As Built Eliminated Approximately 2000 linear feet of guardrail Remove roll curb from entire ramp. Placed all fills on a 4:1 slope or less. Eliminate Light Fill, Removed 16 feet of existing culvert (HL 93 Loading) and extended 8 x 6 Culvert an additional 51 feet to accommodate 4:1 Slopes. Extended outlet of culvert 34 feet to accommodate 4:1 slopes. Remove asphalt approach and replaced with 10 JPC to US 25W. Repaired existing concrete ramp pavement that had been untouched since 1967. Sawed and Sealed all joints.

3. Ramp A Before

4. Ramp A Proposed As-Built

5. Guardrail Elimination Ramps A and B

6. Ramp C Project Highlights Proposed Remove 199 feet of grail Place 137.5 feet of grail Widen 28 Feet (JPC 10-in Pavement) Excavate 50,895 cubic yards Create Dual Left Turn Lanes Resurface Asphalt Approach Pavement As Built Eliminated 137.5 feet of grail. Placed DBI on 18 inch culvert to eliminate shoulder drop off. Repaired existing concrete ramp pavement that had been untouched since 1967. Added preformed quadra-pole loop and lead-in. Sawed and sealed all existing joints.

7. Ramp C ProposedProposed Pipe Extension

8. Ramp C As Built DBIAs Built

9. US 25W Project Highlights Proposed Excavate existing 10 foot shoulder 3.5 feet Rem existing 6” Cast Iron FM Sewer and Replace with 6” Ductile Iron Place 2 feet of Crushed Agg No 2 wrapped in geotextile fabric, 1080 yards of Geogrid Reinforcement, 6 inches of CSB, 10 ¾ inches of base, and 1 ¼ inches of surface. Add Crash Wall to I-75 US 25W Overpass Br. Place Curb & Gutter and 3 Flumes Add additional NB Lane under Bridge Install new Grail from Ramp A to Ramp B As Built Eliminate all grail Placed Crash Cushions on Crash Wall on both North and South Bound Lanes. Added Crash Wall to South Bound Lanes Eliminated Excavation and placement of # 2 stone, CSB, and Asphalt Base. Relocated Steel Strain Pole Eliminate Curb and Gutter and Flumes. Eliminated placement of 6” Ductile Iron FM Sewer Line. Add 200 feet of Storage to get Northbound Traffic into two lanes through light.

10. US 25W BeforeAs Built

11. US 25W BeforeAfter

12. Ramp B Proposed No Work Proposed As Built Extended outlet of 8 x 6 Concrete Box Culvert 34 feet. Flattened slope to 4:1 or Less Removed Roll Curb on both sides of ramp. Placed 6 feet Asphalt Shoulder on inside of ramp and 4 foot on outside of ramp. Repaired existing concrete ramp pavement that had been untouched since 1967. Sawed and resealed all joints. Eliminated approximately 1100 feet of Guardrail.

13. Ramp B BeforeAfter

14. Ramp B BeforeAfter

15. Ramp D Proposed Nothing Proposed As Built Flattened all slopes to 4:1 or less. Eliminated Approx 1500 feet of Guardrail. Repaired existing concrete ramp pavement that had been untouched since 1967. Sawed and resealed all joints. Replaced Right of Way Fence.

16. Ramp D BeforeAfter

17. Guardrail Elimination Ramp C and D

18. Picture on Plan Sheets not Changed

19. Costs Original Project Cost 1,775,000 Total of 8 Change Orders 26 supplemental Items added to Contract Total of 165 days added to Contract Total costs added by Change Orders $452,000

20. Summary We spent an additional 452,000 Eliminated 4700 feet of Guardrail Improved Safety Improved traffic flow through the intersection Greatly decreased long term maintenance Looks much better.

21. The End