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Current Condition of Nebraska's Highways
- 1. Current Condition of Nebraska’s Highways Mark Osborn NDOR Roadway Asset Management January 19, 2016
- 2. Profile Approximately 12,000 miles every year Data Collection(Rutting, Faulting, IRI, 3D Surface, Photos, & GPS data) Visual Ratings (Cracking Distress-Severity & Extent)
- 3. Nebraska Serviceability Index (NSI) ****AGE*** Scale 0 – 100 90 – 100…….Very Good (new pavement) 70 – 90………Good 50 – 70………Fair 30 – 50………Poor 0 – 30……...Very Poor (needs Replaced) Bituminous NSI • Longitudinal Cracking Type/Severity • Transverse Cracking Type/Severity • Raveling / Weathering • Rutting Portland Cement NSI • Joint / Panels Repairs Spalling Seals Cracking • Faulting
- 10. NE'S CURRENT RATING SYSTEM FHWA'S PROPOSED RATING SYSTEM IRI in/mi RATED IRI in/mi RATED < 54 Very Good < 95 Good 54 to 157 Good 95 -170 Fair 157.1 to 210 Fair >170 Poor 210.1 to 267 Poor > 267 Very Poor
- 11. STATE MILES OF PCC MILES OF SYSTEM % OF SYSTEM % RATED GOOD (IRI<95) Iowa 3,387.8 11,097.0 30.5 37.9 Kansas 1,502.9 11,744.6 12.8 81.4 Minnesota 2,198.7 14,316.1 15.4 66.1 Missouri 5,841.0 *20,141.4 29.0 64.9 Nebraska 1,824.5 11,026.3 16.6 43.9 North Dakota 867.9 8,376.2 10.4 81.5 * Missouri manages 77,026 miles of roadway
- 12. TOTALMILES MILESPCC MILESCOMP %PCC %COMP %PCC/COMP UNITEDSTATES 4,071,178 50,369 98,758 1.2 2.4 3.7
Editor's Notes
- NE just purchased two new vans with 3D capabilities. We collect in house and spend approx. $10 per mile. We collect approx. 12,000 miles. The profile data is summarized and saved at one tenth mile points. The condition ratings are collected approx. every mile.
- After 10 years, max NSI=88, between 6-10, max NSI=92. Rutting between 7-8, max NSI=82, 8-9, max NSI=71, rutting >9, max NS=60. PSI causes the optimum year to be past, NSI set 70.
- IRI 209 in/mi rated poor
- IRI 83 in/mi rated good
- 2014 Data
- 2013 Data
- Potential ASR pavements built between 1980 and 2000, Approx. 609 miles