Minneapolis Department of Public Works

Public Works

350 South 5th Street
RM 203 City Hall
Minneapolis, MN  55415-1390

sealcoat map w pkwy

2012 Sealcoat Program

Project Type:
Sealcoat is a process that will improve the quality of the pavement surface. First, liquid asphalt is placed over the pavement, and this is followed by spreading stone chips, such as granite, over the liquid asphalt. The pavement surface is then rolled with specialized compaction equipment to embed the chips into the applied liquid asphalt. In approximately one week, the pavement is swept with a street sweeper to pick up excess sealcoat chips.

Sealcoat projects provide a significant benefit in extending the life span of asphalt pavements. Primarily, this process provides a protective membrane and seals the cracks, preventing water from seeping into the street base. During the freeze/thaw cycle, unprotected pavement is much more susceptible to potholes. Sealcoat also prevents weathering and protects the pavement from harmful effects from the sun. The second benefit is it adds texture and increases the pavement friction. As pavement ages it becomes smooth as traffic wears off the fine particles. The roadway may become slippery and difficult to stop quickly. Sealcoat increases these properties and makes the roadway safer.

Project Limits:
Please see detailed map for 2012 locations. City-wide. Projects are chosen through City inspections and annual maintenance costs.

Construction Start Date:
The project start date is unknown at this time.

Length of Construction:
The placement of the sealcoat chips is a moving operation. First, the liquid asphalt is placed with a tank truck, followed immediately by the placement of the stone chips with a spreader. The compaction equipment follows immediately behind, to seat the chips onto the existing asphalt pavement. This procedure is very fast.

The seal coated roadway is then open to traffic. There are remaining loose chips on the roadway as the sealcoat goes through the curing process. Approximately one week after the chips are initially placed, the street is swept to capture excess chips. The reclaimed chips are cleaned and reused.

Layouts, Detours, Images:
Project_Map
Sealcoat_Fact_Sheet
Sealcoat Schedule

Impact to Residents: 

This process is a moving operation, and traffic is maintained during the process. Streets will be posted "No Parking" in advance of the work, and the street will be swept before the sealcoat operation. "Loose Gravel" signs are placed on the project boundaries, and flaggers are used to direct traffic during the placement operation. Please expect additional travel time when traveling through the work areas.

*The loose gravel on sealcoat projects is an extremely dangerous surface for bicyclists and motorcyclists. Those using these forms of transportation should be advised to choose an alternate route if possible.

Project Updates:
Look for project updates here.

(Note: Project information may change due to scheduling, weather, or other factors outside of our control. Listings will be updated as new information becomes available.)  Citizens concerned with pedestrian access during construction should contact the project manager directly.

Last updated Apr. 16, 2013