Street Condition Inspection and Inventory Information

Link to the Infrastructure Management Program.	Link to the Street Treatment Selection Manual.

• IMP Briefing - Presentation to Council, December 7, 2022
  
• IMP Briefing - Presentation to TRNI Committee, May 16, 2022
  
• IMP Briefing - Presentation to TRNI Committee, November 15, 2021
  
• IMP Briefing - Presentation to Council, June 2, 2021
  
• Pavement Treatment Manual Briefing - Presentation to Council, June 2, 2021
  
• IMP Briefing - Presentation to TRNI Committee, May 17, 2021
  
• IMP Briefing - Presentation to Council, November 4, 2020
  
• IMP Briefing - Presentation to Council, October 2, 2019
  
• 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
  

Definitions

Preservation

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.

Maintenance

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

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.

Rehabilitation

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

Restoration

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 Concrete streets that have an asphalt overlay. The top asphalt layer is removed and the remaining concrete base is examined for deficiencies. The deficiencies are removed and replaced, typically consisting of large, failed sections, including breakout and removal of old pavement, repair of any base failures.  Once the Base failures or deficiencies have been addressed the roadway is topped with a 2" asphalt overlay. To be a candidate for this repair, residential and thoroughfare streets must have less than 25% of failed area.

PCI Range