Use of Moveable Barrier Walls on I275 in Northern Kentucky

1
Use of Moveable Barrier Walls onI-275 in
Northern Kentucky

• Presented By
• Paul Looney, P.E.
• KYTC Division of Highway Design
• James Napier, P.E., P.L.S.
• WMB, Inc.

2
Begin Project
End Project
3
The Project

• 4-lane Interstate Pavement Rehabilitation
• Existing Concrete Pavement
• 6 PCC Shoulders
• 4 Inside
• 10 Outside

4
(No Transcript)
5
Can 2-Lanes Be Maintained?

• Bridge over Ohio River
• Twin bridges at Ky 8
• Reduced structure and width on existing mainline
  shoulders

6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
Preliminary Decisions

• Maintain 1 lane in each direction
• Cross traffic over and construct one side
• Necessary due to constraints at each end of
  project
• Traffic should be analyzed to determine potential
  problems

11
Traffic Issues

• Peak-hour traffic exceeded single lane capacity
  during weekdays

12
Hourly Traffic I-275 EB (MP 12.6)April 11-13,
2006
13
Hourly Traffic I-275 WB (MP 12.6)April 11-13,
2006
14
I-275 EB (MP 12.7)Sept 11-16, 2006
15
I-275 WB (MP 12.4)Sept 11-16, 2006
16
Single Lane Traffic Impacts

• Maximum Backup EB- 0.5 mile
• Maximum Backup WB-5.3 miles

17
(No Transcript)
18
Administrative Direction

• Maintain 2 lanes in both directions
• Allow only off-peak single lane closures

19
Is there another way?

• Nighttime work only?
• There are directional AM/PM peaks
• What if we could reverse the lanes to only keep 2
  lanes in the peak direction?

20
First KTC Project to Use Movable Concrete Traffic
Barrier (MCTB)

• I-275 Pavement Rehab ProjectBoone CountyItem
  No. 6-2028.00

21
TCP Alternates Considered

• Original Plan to Maintain One Lane in Each
  Direction Separated by a 9T Wall
• Did Not Meet Requirement to Keep Two Lanes Open
  During Peak Traffic Hours (11.1 Million)
• Part-Width Paving at Night and On Weekends
• Not Safe Would Lengthen Time to Complete
  Project per District construction Personnel
  (12.5 Million)

22
TCP Alternates Considered

• Temporary Widening in The Median to Maintain Two
  Lanes In Each Direction
• Would Require Extensive Temporary Pavement and
  Construction of a Temporary Bridge in the Median
  at Exit 11 (16.0 Million)
• Same as 3 Above Except Widening is Made Permanent
  and Striped As Shoulder
• Most Expensive Alternate and Same Reasons As For
  3 Above (18.0 Million)

23
Reversible Lane Scheme Selected

• Requires the Use of a Moveable Concrete Traffic
  Barrier (MCTB) and a Barrier Transfer Machine
  (BTM)
• Barrier Moved Twice a Day
• Median Crossovers and Slip Ramps Used to Shift
  Traffic to One Roadway

24
Moveable Barrier Wall Transfer Machine
25
Specific Wall Design Criteria

• MCTB size is 32 high x 24 wide at base
• Each MCTB section is 37 long with pin to pin
  length of 39
• MCTB has New Jersey shape with T-Head
• BTM size is 12 high x 14 wide x 46 long
• BTM can move wall laterally from 4 to 18 feet
• Speeds up to 5 miles per hour
• Minimum Horizontal Radius 300 feet
• Grades up to 6 (10 With Special Design)
• BTM can lift wall up to 18 inches

26
I-70 Project Indianapolis, In
FOR THIS APPLICATION THE BARRIER TRANSFER
MACHINE ALWAYS MOVES BARRIER FROM LEFT TO RIGHT
AS IT ADVANCES
27
Design of PlansFor Reversible Lane

• Develop Reversible Lane Typical
• Required Paved Roadway Width
• 1.5 11.5 14 11.5 1.5 40
• Available Paved Roadway Width
• 4 24 10 38
• Decided to Widen Inside Shoulder 2
• Existing Shoulder Eastbound
• Permanent JPC Pavement Westbound

28
1
2
1
2
29
Reversible Lane Configuration
30
Design of PlansFor Reversible Lane

• Developing Reversible Lane Typical
• Fit Reversible Lane Typical to Existing I-275
  Roadways

31
Reversible Lane Plan
32
Design Considerations

• Reduced Shoulder Widths at Ohio River Bridge (30
  Roadway Gutter to Gutter)

33
I-275 Westbound Approach toOhio River Bridge
34
I-275 Westbound atOhio River Bridge
35
Limited Time Disincentive

• 16 Calendar Days Per Roadway to Complete All Work
• Disincentive of 10,000 Per Day After 16 Days

36
(No Transcript)
37
(No Transcript)
38
BTM Moving Wall atOhio River Bridge
39
Design ConsiderationsContinued

• Reduced Shoulder Widths at Ohio River Bridge (30
  Roadway Gutter to Gutter)
• Reduced Roadway Width on Eastbound I-275 Bridge
  at KY 8 Interchange (38 Gutter to Gutter)

40
I-275 EastboundBridge over Ky 8
41
Design ConsiderationsContinued

• Reduced Shoulder Widths at Ohio River Bridge (30
  Roadway Gutter to Gutter)
• Reduced Roadway Width on Eastbound I-275 Bridge
  at KY 8 Interchange (38 Gutter to Gutter)
• Where Is BTM Located When Not Moving Wall?

42
BTM at Crossover(On-Site Storage Location)
43
Other Time Restrictions(Placed on Contractor)

• Work Through Phase 2 by November 15, 2007
• Completion of Work by July 1, 2008
• Disincentive of 5,000 per day

44
Construction Contract

• Let to Contract on July 27, 2007
• Winning Bid was 14,033,994
• W. L. Harper Company
• 2.67 Under Engineers Estimate

45
Moveable Concrete Traffic Barrier Bid Items

• Moveable Concrete Traffic Barrier bid at 91.20
  per LF for 13,440 LF
• Temporary Impact Attenuator bid at 12,576.54
  Each for 2 Attenuators
• Total Cost 1,250,881

46
MOVEABLE BARRIER WALL COSTS VS.PAVEMENT WIDENING
IN MEDIAN COSTS
47
Not Included in Estimates

• Road User Costs
• Construction Time Saved Constructing Temporary
  Pavement in Median
• Construction Time Saved Removing Temporary
  Pavement from Median

48
PROBLEMS DURING CONSTRUCTION
49
Mike Shayeson - PresidentThe Harper Co.
Contractors
50
When To Use

• Need to Close Roadways or Lanes During
  Construction
• High ADTs
• Peaks in Traffic Volumes in Opposite Directions
• Peaks Exceed Maximum Traffic Volumes Available in
  Lanes to Remain Open

51
Other Uses

• For Shoulder Work to Create Additional Working
  Room During Off Peak Hours
• To Separate Work in the Median From Traffic and
  Expand Work Area Along Median During Non-Peak
  Hours
• To Create Contra-Flow Lanes
• In Permanent Applications for Managed Lane
  Applications

52
One Source Item

• Currently the Moveable Concrete Traffic Barrier
  and Transfer Machine are One Source Items
• Both Are Produced by Barrier Systems, Inc., 180
  River Road, Rio Vista, California 94571 Toll
  Free Ph. 888-800-3691
• The Federal Highway Administration has Approved
  the Use of This One Source Item for Use On All
  Federal Projects
• Ron Vititoe Midwest Regional Manager Phone
  1-209-482-3020

53
Use of Moveable Barrier Walls onI-275 in
Northern Kentucky

• Contact Info
• Paul Looney, P.E.
• KYTC Division of Highway Design
• Paul.Looney_at_ky.gov
• James Napier, PE, PLS
• WMB, Inc.
• 1950 Haggard Court
• Lexington, KY 40505
• Ph. 859-299-5226
• E-mail james_at_wmbinc.com