The City is responsible for maintaining over 100 miles of streets. Routine maintenance including: sealcoating, cracksealing and slurry sealing greatly reduces the number of repairs and helps to preserve our City streets.
Sealcoating is the surface application of an asphalt emulsion followed by the placement of small graded aggregate. This coating is wear-resistant and is designed to protect pavements from the damaging effects of the environment, like oxidation and moisture. Sealcoating also minimizes raveling (the loss of aggregate) and fills minor voids in the surface. There is a very large amount of poor quality pavement that needs to be held together with sealcoating, until the streets can be scheduled for reconstruction. The streets are budgeted to be sealcoated approximately once every ten years.
Crack Sealing is the placement of a rubberized sealant in the crack that will provide a protective coating and seal out water. Shrinkage is the cause of most cracks in asphalts pavements. Sun, wind, rain and heat oxidize asphalt, causing hardening and shrinkage. The pavement then breaks at the weakest points. Cracks cause potholes and other pavement deterioration by allowing moisture into the sub-base. Crack sealing repairs a sound pavement that has started to crack and delays expensive resurfacing, it also can prepare pavement for overlaying, chip sealing or seal coating. The department determines which areas in the City need to be scheduled for crack sealing.
Striping / Crosswalks - Street Department crews repaint crosswalks and various other markings yearly. Center and edge line markings are contracted out annually.
Slurry Seal consists of a mixture of an approved emulsified asphalt, mineral aggregate, water and specified additives, proportioned, mixed and uniformly spread over a properly prepared surface. The completed slurry seal leaves a homogeneous mat, adhering firmly to the prepared surface with a friction resistant texture throughout its service life. The City currently uses slurry seal mixtures in cul-de-sac areas only.
Potholes are created in a number of ways. When water seeps into a crack on the road’s surface and is combined with vibration of traffic it causes the asphalt to fail. The most common problem is the freeze/thaw cycle, which is why they seem more prevalent in the colder months. The ice or snow melts during the day filling the cracks with water. At night the water freezes and expands, popping out the asphalt and creating a hole. They are also created when heavy equipment stresses the roadway causing a movement of the subsurface. After there is a weak spot formed, every vehicle that travels over the fracture worsens the problem, eventually a section of the material will fail. City crews are out year round patching these potholes. To report a pothole, please call Public Works at (651) 480-6185 or email us.
Sweeping - Street Department crews sweep streets twice a year, in the spring to remove any sand leftover from snow and ice control maintenance and in the fall to pick up the leaves so they cannot plug up our storm drain systems. All other sweeping is done on an as needed basis.