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The Streets Division strives to ensure the street system within the City of College Station is properly maintained. This is done through a number of programs including:
Base Failure Repair
Base failures are identified when the subsurface of the street collects moisture and loses its compaction causing a weak spot in the asphalt. This results in potholes and cracking of the pavement. Repairs are scheduled and completed to prevent further damage, and to maintain a safe travel surface. Staff employees remove the failed area by excavating the affected pavement and restoring the subsurface of the road with new material and compaction equipment.
Concrete & Curb Repair
The Streets & Drainage Division will remove and replace concrete curbs and gutters that have deteriorated. Concrete that is damaged or deteriorating will allow water to penetrate the subsurface of the street, causing pavement failures and potholes. Sidewalks are evaluated on an as needed basis for repairs and American Disabilities Act (ADA) compliance.
Each year a contract is awarded for curb, gutter, and sidewalk repairs. Repairs are scheduled based upon priority and need. When funding permits, additional tasks are performed; such as valley gutter cuts in street intersections to allow ADA compliant ramps.
The Streets Division seals cracks on the roadway by applying a rubberized asphalt material to the surface. This process eliminates the penetration of water that causes potholes and base failures. The crack sealing routine is performed during the winter and spring months when the cracks are at their peak (due to weater) to ensure a maximum seal.
Streets and Drainage Division crews work together to respond to emergencies such as floods, ice storms, trees/debris in roadways, and vehicle accident obstructions. Employees are on call 24 hours a day, 7 days a week to respond to emergencies.
Streets Division crews restores pavement condition by repairing potholes, base failures, and installing a "hot mix" asphalt overlay. This installation restores drainage and improves the ride-ability of the street. These projects are completed with both City personnel and outside contracts.
The Streets Division patches potholes on a route that covers all city streets on a bi-monthly basis. In addition, reported potholes are repaired within 48 hours. This routine and response time requires that patching operations run year round. The pothole patching operation uses a spray injection process where heated asphalt emulsion and aggregate are sprated into the pothole.
Roadway conditions are surveyed annually to determine which streets are candidates for sealcoating. The sealcoat process consists of an application of liquefied asphalt covered with a layer of aggregate. This seals cracks to eliminate water penetration, provides a wearing surface and extends the life of a street to 5-7 years. The city currently sealcoats 150,000sf of pavement each year. The annual sealcoat program is performed over the course of one month during the summer. Sealcoating requires about three weeks to cure, however once completed the surface is immediately accessible by traffic. During the three week curing phase, small aggregrate rock that will not bond to asphalt will be cleared from the roadway by a street sweeping unit. For approximately the first year, the surface will be rough. Contact without shoes and use as a playing surface for children is not recommended. Over time the surface will gradually smooth.
Arterial roadways are swepts monthly, while streets in the Northgate area are swept every Friday at 3 a.m.