arkansas interstates today - rmaces · 2020. 3. 5. · rubblization and asphalt overlay – the...
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Emanuel Banks, P.E.Deputy Director and Chief Engineer
Rubblization and Asphalt Overlay –The Arkansas DOT Experience
Arkansas Interstates Today
ARKANSAS DEPARTMENT OF TRANSPORTATION
ARKANSAS DEPARTMENT OF TRANSPORTATION
• Jointed PCCP– Primarily mesh reinforced PCCP– 9” to 10” slab thickness– 6” granular base typical– Dowelled construction joints @ 45’– Sawn warping (control) joints @ 15’
• Undowelled
• Continuously Reinforced Concrete– 8” slab thickness– 6” to 8” soil cement or lime treated base
Typical Pavement Designs –Original Interstate Segments
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ARKANSAS DEPARTMENT OF TRANSPORTATION
Typical Section of Original Interstate
6’‐0” 12’‐0” 12’‐0” 10’‐0”
0.015 ‘ / ’ 0.040.04
Arkansas Interstate Rehabilitation Programs (IRPs)
ARKANSAS DEPARTMENT OF TRANSPORTATION
First IRP ‐ 1999• Bond Program• 359 miles of Interstate
Second IRP ‐ 2011• Bond Program• 502 miles of Interstate
First IRP – Why?
ARKANSAS DEPARTMENT OF TRANSPORTATION
In 1994 Arkansas’ Interstate system ranked one of the five worst in the nation, using IRI “condition” data
The trucking industry ranked Arkansas Interstates some of the worst in the country
Typically only 10 – 15 miles of Arkansas Interstate pavements could be rehabilitated per year
12%
58%
30%
1994
IRI
Source: FHWA Highways Statistics – Table HM‐47
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First IRP - Breakdown
First IRP - Rubblization
ARKANSAS DEPARTMENT OF TRANSPORTATION
Resonant Head Breaker
Multi‐Head Breaker
First IRP - Rubblization
ARKANSAS DEPARTMENT OF TRANSPORTATION
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First IRP – ACHM Overlay
ARKANSAS DEPARTMENT OF TRANSPORTATION
First IRP - Rubblization
ARKANSAS DEPARTMENT OF TRANSPORTATION
First IRP – Edge Drains
ARKANSAS DEPARTMENT OF TRANSPORTATION
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First IRP – Bridge Clearance
ARKANSAS DEPARTMENT OF TRANSPORTATION
First IRP
ARKANSAS DEPARTMENT OF TRANSPORTATION
First IRP
ARKANSAS DEPARTMENT OF TRANSPORTATION
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First IRP - Results
ARKANSAS DEPARTMENT OF TRANSPORTATION
1999 – Pre IRP
• 2703 Total Lane Miles
– PCCP
• 1999 Miles
– ACHM
• 704 Miles
• 74% PCCP
• 26% ACHM
2005 – Post IRP
• 2756 Total Lane Miles
– PCCP
• 991 Miles
– ACHM
• 1765 Miles
• 36% PCCP
• 64% ACHM
First IRP – Lesson Learned
ARKANSAS DEPARTMENT OF TRANSPORTATION
75 75
60 59 5752
17.9 16.5
71.875.7
79.374.1
0
20
40
60
80
100
120
'97‐'00 2000 2001 2002 2003 2004
Weighted IRI (in/m
i)
Smoothness Over Bond Period
Interstate Rehabilitation Program
CompletedNumber of Projects: 48Miles: 311Amount (Millions): $1,066
CompletedNumber of Projects: 48Miles: 311Amount (Millions): $1,066
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Interstate Rehabilitation Program
Under ConstructionNumber of Projects: 4Miles: 34Amount (Millions): $248
Under ConstructionNumber of Projects: 4Miles: 34Amount (Millions): $248
Let To ContractNumber of Projects: 52Miles: 345Amount (Millions): $1,314
Let To ContractNumber of Projects: 52Miles: 345Amount (Millions): $1,314
Interstate Rehabilitation Program
ScheduledNumber of Projects: 27Miles: 160Amount (Millions): $220
ScheduledNumber of Projects: 27Miles: 160Amount (Millions): $220
Total ProgramNumber of Projects: 79Miles: 505Amount (Millions): $1,534
Total ProgramNumber of Projects: 79Miles: 505Amount (Millions): $1,534
Pavement Preservation – The Future
ARKANSAS DEPARTMENT OF TRANSPORTATION
• Pavement Preservation is:
– “Keeping Good Roads Good”
• Pavement Preservation is not:
– Keeping a road from falling apart (band‐aid)
– Covering up a road that needs reconstruction
– Adding structure to a pavement
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2020 Pavement Preservation Projects
January – $31 Million
February – $69 Million
April – $58 Million
May – $40 Million
June – $57 Million
Pavement Preservation – The Future
ARKANSAS DEPARTMENT OF TRANSPORTATION
Pavement Preservation – The Future
ARKANSAS DEPARTMENT OF TRANSPORTATION
Source: PPRA
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Pavement Preservation – The Future
ARKANSAS DEPARTMENT OF TRANSPORTATION
Source: LA County Public Works Dept.
Questions?
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