Preliminary design plans for Slayton Hill/Dulac St. reconstruction were presented at a Community Conversation on Wednesday, February 12, 2014 at the Fireside Inn. Attendees were updated on the project. Please see http://alert.lebnh.net/home/slayton-hill for complete details and updates.

1. Slayton Hill Road Reconstruction
Lebanon, NH
February 12, 2014

2. Welcome and Introductions
• Greg Lewis – City Manager
Ground Rules
• Paula Maville – Deputy City Manager
Scenic Road Designation
• David McNamara – Fay, Spofford, & Thorndike
Design Update
Slayton Hill Road Reconstruction
City of Lebanon, NH

3. Scenic Road Designation
• Declaration of Purpose:
• Slayton Hill Designated Scenic on 12/15/93
• Impacts to Right-of-Way
88% of stone walls between Dulac & 78 Slayton
An additional 44% between 78 Slayton &
Dunsinaine
60% of trees (total length of project) will need to
be cleared
Slayton Hill Road Reconstruction
City of Lebanon, NH

4. Scenic Road Designation
• One of Two Processes to Undertake
§134-5 Effect of Designation as Scenic Road
Manager to obtain written consent of the Planning
Board after a Public Hearing
§134-8 Rescission of Designation of Scenic Road
Requires a petition of 10 Persons who are either voters
of the City or who own land which abuts the road
Reports Solicited from the Planning Board and
Conservation Commission
Public Hearing held by the City Council
Slayton Hill Road Reconstruction
City of Lebanon, NH

5. Meeting Objectives
• Update on status of project
Temporary repairs
Complete
Permanent reconstruction
Design Progress
Next Steps
• Solicit feedback
Scenic Road Designation
Present updated design progress
Discuss potential property and edge of road impacts
due to permanent improvements
Slayton Hill Road Reconstruction
City of Lebanon, NH

6. Existing Conditions
Slayton Hill Road was built into a hillside
Ledge and poorly drained soils
Slayton Hill Road – Reconstructed in 2001/2002 timeframe
Design was restricted by Scenic Road designation and
limiting property impacts
• Culverts generally replaced with new ADS pipe of the same
size
• Narrow/shallow swales and underdrains with limited armor
in place along uphill side of road
• New Standards
•
•
•
•
Precipitation Data
Storm Sizing
Slayton Hill Road Reconstruction
City of Lebanon, NH

7. Response – Short Term Repairs
• City forces
Immediate repairs following July 2nd Storm (July)
Temporary water main
Roadway repairs to allow traffic
Intermediate Term (Complete)
Repair buried water main
Widen road to allow minimum two lanes of traffic
Temporary pavement course for winter maintenance
Armor washed out ditches
Additional culvert to divert flows in lower section
Slayton Hill Road Reconstruction
City of Lebanon, NH

8. Design
• Design Storm
100 year minimum
• Culvert sizing
Slayton Hill Road
Total of 22 cross culverts
– 10 are adequately sized
– 11 are undersized
– 1 new Culvert
Dulac Street
Total of 3 cross culverts
– 2 are undersized
– 1 new culvert (twin pipes)
Slayton Hill Road Reconstruction
City of Lebanon, NH

9. Culvert Sizing – Slayton Hill Road
AREA
STATION
EXISTING CULVERT SIZE
PROPOSED CULVERT SIZE
AREA
STATION
EXISTING CULVERT SIZE
PROPOSED CULVERT SIZE
1
Intersection w/ Dulac St
18” HDPE
24” RCP
12
56+21
18” HDPE
24” RCP
2A
7+99
18” HDPE
24” RCP
13
56+89
24” HDPE
24” RCP
2B
11+84
-----
24” RCP
14
61+11
18” HDPE
30” RCP
15
63+11
18” HDPE
24” RCP
16
66+52
24” HDPE
36” RCP
17
75+26
48” HDPE
6-ft x 4-ft Concrete Box
18
82+53
18” HDPE
18” RCP
Replace CB with Headwall
19
85+99
18” HDPE
18” RCP
Replace CB with Headwall
30” HDPE
30” RCP
3
4
5
6
8
9
12+43
16+00
19+59
20+85
27+98
29+38
2.7-Ft x 2.6-Ft Concrete Box
4-Ft x 4-Ft Concrete Box
18” HDPE / 27.6
24” RCP
15” HDPE
15” RCP
15” HDPE
18” RCP
24” HDPE
18” HDPE
24” RCP
18” RCP
Replace CB with Headwall
20
10
33+82
30” HDPE
30” RCP
21
3+72
15” HDPE
15” RCP
11
42+31
24” HDPE
Twin 24” RCPs
22
89+18
15” HDPE
15” RCP
Slayton Hill Road Reconstruction
City of Lebanon, NH

10. Culvert Sizing – Dulac Street
AREA
STATION
EXISTING CULVERT SIZE
PROPOSED CULVERT SIZE
23A
202+50
12” HDPE
Twin 18” RCPs
23C
206+50
-----
Twin 18” RCPs
23B
209+50
12” HDPE
24” RCP
Slayton Hill Road Reconstruction
City of Lebanon, NH

11. Design
• Ditches
Most proposed are V shaped,
1.5’ to 2.0’ deep, 3:1
sideslopes off the road, 2:1
back slopes to match existing
ground
Lower portion includes a 2’
wide flat bottom
Slopes steeper than 10% will
be stone lined
Slopes flatter than 10% will
be grass, with reinforced
matting products
Underdrains
Slayton Hill Road Reconstruction
City of Lebanon, NH

12. Design - Tributary Drainage Areas
Slayton Hill Road Reconstruction
City of Lebanon, NH

13. Slayton Hill Road Typical Section
Slayton Hill Road Reconstruction
City of Lebanon, NH

14. Slayton Hill Road – Sta. 0+00 to 21+50
(Dulac to #53)
Slayton Hill Road Reconstruction
City of Lebanon, NH

15. Retaining Wall #1
Slayton Hill Road Reconstruction
City of Lebanon, NH

16. Slayton Hill Road – Sta. 21+50 to 43+50
(#53 to #121)
Slayton Hill Road Reconstruction
City of Lebanon, NH

17. Profile Change
Slayton Hill Road Reconstruction
City of Lebanon, NH

18. Slayton Hill Road – Sta. 43+50 to 64+50
(#121 to #141)
Slayton Hill Road Reconstruction
City of Lebanon, NH

19. Slayton Hill Road – Sta. 64+50 to 86+00
(#141 to #183)
Slayton Hill Road Reconstruction
City of Lebanon, NH

20. RetainingWall #3
Slayton Hill Road Reconstruction
City of Lebanon, NH

21. Slayton Hill Road – Sta. 86+00 to
Dunsinane (#183 to Dunsinane)
Slayton Hill Road Reconstruction
City of Lebanon, NH

22. Dulac Street
Slayton Hill Road Reconstruction
City of Lebanon, NH

23. Dulac Street
Slayton Hill Road Reconstruction
City of Lebanon, NH

24. Dulac Street Typical Section
Slayton Hill Road Reconstruction
City of Lebanon, NH

25. Next Steps
• Continue Design
Meet individually with abutters
Incorporate public comment
• Permitting
Coordination with relevant Local, State and Federal agencies
Dredge and Fill Permit, Shoreland Protection, Alteration of Terrain
Scenic Road Designation
• Final Design
Develop plans for bidding
Contract book and specifications
• Advertise
Accept Contractor bids
• Construction
Slayton Hill Road Reconstruction
City of Lebanon, NH

26. Individual Meetings
• Purpose
Discuss direct impacts to individual properties
Present ROW or easement acquisition offers
• Times
12 PM to 8 PM windows
Monday, March 3
Wednesday, March 5
Monday, March 10
Wednesday, March 12
20 minutes each
Sign up tonight with Tina
Slayton Hill Road Reconstruction
City of Lebanon, NH

27. ROW Process
• Follow NHDOT LPA/Federal Guidelines
• Permanent Impacts
Maintenance for drainage
Retaining walls
• Temporary Impacts
Slope and clearing work
Arborist
Driveway tie-ins
• City to assess property values
• Compensation offer
Monetary compensation
Slayton Hill Road Reconstruction
City of Lebanon, NH

28. Construction
• Duration
Major construction activities - one season, May to
November
Final overlay, clean up work – Spring of 2015
• Traffic Management
Full Access to houses, emergency vehicles at all times
Road closures allowable July and August
Minimum one-lane open during school year (7 AM to 9
AM and 3 PM to 5 PM)
Slayton Hill Road Reconstruction
City of Lebanon, NH

29. Timeline – Full Reconstruction
• Meet with Public, Walk-about, discuss impacts
September/October
• Final design
February - April
• Permitting
February - April
• Bid Project
May
• Construction
May - November 2014
Slayton Hill Road Reconstruction
City of Lebanon, NH

30. Individual Group Break Out
• Follow Up Questions
http://ask.lebnh.net/
• Contact Information
Greg Lewis, City Manager
greg.lewis@lebcity.com
Phone: 603-448-4220
Mike Lavalla, Director of Public Works
Mike.lavalla@lebcity.com
Phone: 603-448-3112
David McNamara, FST Project Manager
dmcnamara@fstinc.com
Phone: 603-669-2000
Slayton Hill Road Reconstruction
City of Lebanon, NH