Gayle Maurer, P.E.. Anita Bush, P.E. ... NDOT initiated the PMS in 1980 .... 171 -
200. 400. > 115. 500. > 160. 500. > 200. 500. Friction Number. PMS Points.
Pavement Preservation Update Rocky Mountain Pavement Preservation Partnership Annual Meeting Gayle Maurer, P.E. Anita Bush, P.E. Nevada Department of Transportation (NDOT)
Nevada Department of Transportation “Smooth Roads Ahead”
Outline Nevada’s
state-maintained roadway network
PMS
information
Recent
accomplishments
Current
endeavors
Nevada Department of Transportation “Smooth Roads Ahead”
Nevada’s State-maintained Roadway Network NDOT Maintains 5,376 Centerline Miles of Roads
Nevada’s State-maintained Roadway Network
Roadway network includes 94% asphalt concrete and 6% PCCP pavements
Network estimated to be worth $20 billion
State-maintained roadway network consists of only 16% of the roads in Nevada, however, is overwhelmingly important to the traveling public
56% of total vehicle miles of travel, 83% of all truck travel, and 86% of all heavy truck traffic are carried on the state-maintained roadway network
Nevada Department of Transportation “Smooth Roads Ahead”
Outline Nevada’s
state-maintained roadway network
PMS
information
Recent
accomplishments
Current
endeavors
Nevada Department of Transportation “Smooth Roads Ahead”
PMS Background
NDOT initiated the PMS in 1980
Quick progress due to in-house abilities
Improved and advanced for 30 years Improved numerous aspects of the data collection and condition characterization procedures Advanced with experience and as technology improved
Nevada Department of Transportation “Smooth Roads Ahead”
PMS Information
Network and project level activities
All necessary inventory data and database management
Use the family model method and long-term data for prediction modeling, along with LCCA
Use of mill and thin HMA overlays on various schedules for different road categories is preferred over major rehabilitation or reconstruction
Nevada Department of Transportation “Smooth Roads Ahead”
Divide Roadway Network Into Five Categories ROAD PRIORITIZATION CATEGORY
1
TWO DIRECTIONAL ADT AND ESALS Controlled Access
TOTAL LANE MILES
PERCENT OF ROAD NETWORK
REQUIRED FREQUENCY OF REHABILIATION IN YEARS
ANNUAL RATE OF DETERIORATION IN LANE MILES
1746
13
8
218
723
6
18
40
2519
19
10
252
2800
21
12
233
1921
15
15
128
3387
26
20
170
13095
100
Asphalt
1
Controlled Access Concrete
2 3
4
ESAL>540 or ADT>10,000 540>=ESAL>405 or 1600270 or 400 1/4" ; < 7/8" >7/8"
RAVELING
IRI PMS Points 0 - 80 0 81 - 100 100 101-115 200 116 - 130 300 131 - 160 400 > 160 500 Friction Number PMS Points 2 to 20 400 21 to 30 250 31 to 36 100 above 36 0 Average Rut Depth PMS Points 0 to .25" 0 .26 to 1.00" (675.7 x RD) - 168.9 1.01 to 1.50" (392.2 x RD) + 111.8 above 1.50" 700 Fatigue A = 1.50 x Extent Fatigue B = 2.00 x Extent Block B = 1.00 x Extent Block C = 1.00 x Extent PMS Points = Extent x (LC Severity Factor) Where LC Severity Factor is determined from: Crack Width 805 All Other Routes (Low Volume Roads) T.S.I. =2.5 T.S.I. =2.0
Picture No. 17 (low) 18 (moderate) 19 (severe) Picture No. 20 (low) 21 (moderate) 22 (severe)
LC Severity Factor 0.20 0.8 x (crack width) + .80 1.50
IRI PMS Points 0 - 90 0 91 - 130 100 131 - 150 200 151 - 170 300 171 - 200 400 > 200 500 Friction Number PMS Points 2 to 20 400 21 to 30 250 31 to 36 100 above 36 0 Average Rut Depth PMS Points 0 to .45" 0 .46 to 1.19" (675.7 x RD) - 304.1 1.20 to 1.70" (392.2 x RD) + 33.3 above 1.70" 700 Fatigue A = 1.00 x Extent Fatigue B = 1.50 x Extent Block B = 0.50 x Extent Block C = 0.50 x Extent PMS Points = Extent x (LC Severity Factor) Where LC Severity Factor is determined from: Crack Width 699
Network Condition Based on Repair Category Status
Network Condition Based on Functional Classification Inventory
PMS Information
Short-term pavement management philosophy Maintain
the Interstate highways and Non-interstate Principal Arterial roads at a high level of service by the construction of proactive mill/thin HMA overlays as funding allows and major rehabilitation of inferior pavement segments as necessary Apply preventive and corrective maintenance treatments and repairs to other routes as funding allows Nevada Department of Transportation “Smooth Roads Ahead”
PMS Information
Long-term pavement management philosophy
Maintain Interstates and Non-interstate Principal Arterial roads at a high level of service by the construction of proactive mill/thin HMA overlays as funding allows and major rehabilitation of inferior pavement segments as necessary Preserve Minor Arterials, Major Collectors, and Minor Collectors at a good level of service by the construction of proactive mill/thin HMA overlays as funding allows and major rehabilitation of inferior pavement segments as necessary Manage low volume roads at an acceptable level of service by application of preventive and corrective maintenance treatments and repairs
Nevada Department of Transportation “Smooth Roads Ahead”
Funds Spent for Pavement Preservation and Maintenance Since 1999 Total Funds Spent Centerline Miles for Pavement Funds Spent for Rehabilitated Years Maintenance Preservation and (Does not include miles $ Millions Maintenance for maintenance) $ Millions 1999-2000 $329 $25 $354 1,002 2001-2002 $202 $22 $224 404 2003-2004 $202 $20 $222 387 2005-2006 $197 $20 $217 288 2007-2008 $167 $37 $204 185 *2009-2010 $268 $50 $318 383 * Does not include an additional $124 million in American Recovery Reinvestment Act Funds Funds Spent for Pavement Preservation $ Millions
Outline Nevada’s
state-maintained roadway network
PMS
background and system information
Recent
accomplishments
Current
endeavors
Nevada Department of Transportation “Smooth Roads Ahead”
Recent Accomplishments
PMS Application Collection of 11 separate databases housed within one easy to use software program Forms and data collection schedules are created Raw data are processed with specialized software and entered into databases Editing programs to verify the validity and integrity of the data Information is synthesized for network level and project level needs
Nevada Department of Transportation “Smooth Roads Ahead”
Contract Database
Data Warehouse
RBH Database
Outline Nevada’s
state-maintained roadway network
PMS
background and system information
Recent
accomplishments
Current
endeavors
Nevada Department of Transportation “Smooth Roads Ahead”
Current Endeavors
NDOT will publish a Pavement Management System Overview manual
Heightened awareness to provide transparency and accountability Want everyone to understand the system and not think of it as a “big black box where some magic happens” Need to make NDOT’s PMS relevant to legislature, university professors, engineers, technicians, and any interested public parties as well as our own administrators Can be used as a marketing tool
Nevada Department of Transportation “Smooth Roads Ahead”
Current Endeavors
The Pavement Management System Overview manual will contain: Legal requirements, benefits, and limitations Complete review of the PMS Application software Network level project prioritization procedures Project level development process Needs analysis, serviceability concept, LCCA, and importance of maintenance treatments Reporting features and more
Nevada Department of Transportation “Smooth Roads Ahead”
Like any agency, NDOT’s objective is to provide total pavement management by improving the condition of the entire roadway network while maximizing pavement performance and keeping costs to a minimum.
Nevada Department of Transportation “Smooth Roads Ahead”
