Diffley Road (County Road 30) Resurfacing

County Pro​​ject 30-044

​​Dakota County is resurfacing Diffley Road (County Road 30) from Interstate 35E to just west of Daniel Drive in Eagan. The trail on the south side of the road will be replaced from Interstate 35E to Dodd Road. Curb repairs and pedestrian ramp replacement will also be done.

In addition, there will be some spot water main work. Two new hydrants will be installed on the south side west of Knob Road in addition to other underground water main work.

Storm sewer repairs are also included in the project. Reconstructing and replacing existing catch basins (storm structures in the curb) will be done with lane closures.

This segment is part of the 11.5 miles of roadways resurfaced this construction season. Pavement resurfacing involves removing and replacing a layer of asphalt. This is referred to as a “mill and overlay.” The result will be better looking, longer lasting, and smoother roadway.

Road closures and detours

Drivers should expect temporary lane closures, flaggers, and delays throughout the project. Please allow extra time for travel, watch for construction signage and be cautious while driving through the construction area.

Outside lanes will be closed to allow for curb removal and storm sewer work.

Construction ​progress​

Aug. 7–15

Diffley Road right lane (eastbound) closure:

• Installing new concrete
• Removing and replacing drainage structures
• Patching areas of the curb where needed
• Installing of two new hydrants on the south side, west of Knob Road
• Adjusting manhole covers