Agenda - Council - 08/06/2018 - Laserfiche WebLink

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Pavement Condition Performance Measure Explanation Anoka County's decision to repave or overlay a roadway is assisted by monitoring the Pavement Quality Index (PQI), which quantifies the pavement condition based on surface distress and wheel path roughness. The PQI rating system ranges from 0 to 100, with 100 being the best quality roadway. The County classifies PQI using the following categories: » Very Good (81-100) Good (61-80) Fair (41-60) Poor (21-40) Very Poor (1-20) When a roadway drops below the minimum thresholds (which vary depending on the traffic volume, as identified below), the County will either plan to recondition the pavement surface or reconstruct it. » » Road Segments with Average Annual Daily Traffic (AADT) >11,001 and PQI <60 Road Segments with AADT 6,001-11,000 and PQI <55 Road Segments with AADT 3,001- 6, an0 d PQI <50 Road Segments with AADT < 3,000 and PQI <45 Bridge Condition Pea The bridges on the county road system are inspected on a regular basis for safety and condition. The Bridge Structural Condition Rating is a broad measure of the structural condition of a bridge (or culvert). Each bridge is categorized as "Good,"Satisfactory," "Fair," or "Poor" by using 4 National Bridge Inventory (NBI) condition ratings and 2 NBI appraisal ratings. Bridges are typically rated in three components — deck, superstructure and substructure. If a bridge spans over a waterway, the channel must also be rated. The 4 NBI condition ratings are Deck Condition, Superstructure Condition, Substructure Condition, and Culvert Condition. The 2 NBI appraisal ratings are Structural Evaluation and Waterway Adequacy. Condition Ratings and Appraisal Ratings use a scale from 0 to 9 where 9 is "Excellent" and 0 is "Failed." The criteria for the 4 categories are identified in Table 2. If a bridge qualifies in more than one category, it is placed in the poorest category. ANOKA COUNTY 2040 TRANSPORTATION PLAN UPDATE I CHAPTER 2 -TRANSPORTATION GOALS