Pavement Management Program
The City of Ramsey maintains 180-plus miles of bituminous paved City streets and is entering the fifth year of its current long-term Pavement Management Program (PMP). The primary goal of the PMP is to perform the proper pavement management (maintenance/rehabilitation) operation at the proper time to maximize the life of the pavement as cost-effectively as possible.
When streets are constructed or reconstructed using today’s design standards, and when pavement management operations are proactively performed on those streets on a regular basis afterwards, at least 60-years of useful life is anticipated from new and reconstructed bituminous pavement sections. Standard bituminous pavement management operations include;
- Cracksealing – Cracksealing protects existing pavement by preventing stormwater runoff from seeping through cracks in the pavement and joints between the pavement and concrete curb and gutter and utility castings, minimizing future damage due to wet subgrade soils, especially during freeze-thaw cycles. The City annually crackseals about 25 miles of bituminous pavement on its public street system.
- Sealcoating – Sealcoating protects existing pavement from the negative effects of stormwater runoff, ultraviolet rays from the sun, and oil-based products that are deposited on the pavement by vehicles. The City annually sealcoats between 13 and 23 miles of pavement on its public street system.
- Overlays – Overlays protect existing pavement similar to cracksealing and sealcoating, while also increasing the structural or load carrying capacity of the pavement. The City annually overlays up to 4 miles of pavement on its public street system.
- Reconstructions – Pavement reconstruction projects remove and replace severely damaged pavement with new pavement sections. Reconstruction projects may also include removal and replacement of damaged concrete curb and gutter on urban sections, or re-grading ditches and re-shouldering on rural sections. The City annually reclaims/reconstructs up to 2 miles of pavement on its public street system.
The City of Ramsey’s current proactive pavement management schedule for improved public streets is generally as follows;
- Crackseal pavement 3 years after construction, overlays, or reconstruction.
- Crackseal/sealcoat pavement 7 years after construction, sealcoats, overlays, and reconstruction.
- Overlay pavement 20 years after construction, overlays, or reconstruction.
- Reconstruct pavement 60 years after construction or reconstruction.
The pavement management schedule for each street segment is adjusted based on actual pavement conditions. City staff annually reviews and rates the pavement condition of all public streets using the Pavement and Surface Evaluation Rating (PASER) system. PASER ratings range from 1 to 10, with 1 being a failed pavement section in total disrepair, and 10 being a brand new pavement section. Staff typically recommends reconstructing pavement sections with PASER ratings between 1 and 4. Overlays are typically recommended for pavement sections with PASER ratings between 4 and 6. Cracksealing and sealcoating are typically recommend for pavement sections with PASER ratings between 6 and 9.
By proactively performing these pavement management operations on a scheduled basis, the useful life of the pavement is maximized as cost-effectively as possible. If proactive maintenance operations are not applied, pavement sections will generally require reconstruction every 30 years, which adds considerable cost to a pavement management program.