Pavement Management / Street Condition/Assessment
Jennifer Nicewander, P.E.
Street Condition Inspection and Inventory Information
For a PDF of the Infrastructure Management Program go to:
FY 19-23 Infrastructure Management Program (IMP)
IMP Briefing - Presentation to MSIS Committee, April 8, 2019
IMP Briefing - Presentation to Council, January 2, 2019
IMP Briefing - Presentation to MSIS Committee, November 12, 2018
For a list of Bond and FY19 maintenance projects, go to:
For a list of maintenance projects completed in the past four years, go to:
Utilized on asphalt streets in with a PCI rating of a 60-70, a high “C” condition with the goal to keep them in from falling into worse condition requiring more expensive repair work.
- Slurry seal
- Consists of a ¼-inch layer of sand and fine stone mixed with asphalt emulsion. This treatment seals and smooths the surface and conceals scars from previous repairs. It is used predominately for residential roads with curb and gutter.
- Places a ¼-inch layer of crushed stone mixed with asphalt emulsion. This treatment seals and smooths the surface and conceals scars from previous repairs. It is used predominately for higher-traffic-volume streets with curb and gutter. It is more expensive than slurry seal, but cures more quickly.
Maintenance work consists of more substantial repairs on streets that have deteriorated to beyond the need of preservation treatment.
- Full Depth Asphalt
- A treatment for asphalt streets to repair the surface and base failures. Repairs are typically larger than a pothole, but smaller than either Street Resurfacing or Street Rehabilitation projects. After the failed area is cut square and removed, a new base is placed and compacted and an asphalt surface is put in place.
- Partial Reconstruction
- This is a method used on concrete streets. It is removal and replacement of large, failed sections, including breakout and removal of old pavement, repair of any base failures, and placing new concrete. To be a candidate for this repair, residential and thoroughfare streets must have less than 25% of failed area.
- Street rehabilitation is a treatment for full depth or penetration asphalt surfaced roads without curb or gutter. Candidate streets are usually in the "poor" condition (PCI<45) Preparation for street rehabilitation includes base and pothole repair, crack sealing, and if necessary ditch grading for drainage. A seal coat is applied to the prepared street surface and finally a two-inch layer (or thickness as required by current standards) of hot mix asphalt is then applied. This work occasionally involves milling. This work is performed by the street repair division directly or under contract
- A treatment for asphalt streets when the entire surface and the base have deteriorated to an unsatisfactory level. It includes rebuilding the entire base by recycling the old base and surface materials into a new base, followed by a chip seal, and new two-inch layer of hot mix asphalt placed over the entire treated segment. Candidate streets are predominately residential asphalt surfaced streets without curb and gutter.
- Asphalt over Concrete
- This is a method used on Asphalt streets. It is removal and replacement of large, failed sections, including breakout and removal of old pavement, repair of any base failures, and placing new concrete. To be a candidate for this repair, residential and thoroughfare streets must have less than 25% of failed area.
|U||Undefined (example - gravel road)|