For the estimated 20,000 motorists who travel state Route 410 through Enumclaw each day, things are about to get interesting.

A project being tackled by the state’s Department of Transportation — announced in March and kicked off this week — will likely bring delays both during the day and during nighttime hours.

The bulk of the work on the $2.6 million project involves grinding away the existing surface and providing new pavement on both directions of SR 410.

The level of inconvenience might depend upon when a driver tackles the highway.

“Most of the work will take place at night,” according to a DOT press release, “but there will be a few weeks of daytime lane closures for intersection improvements in Enumclaw.”

The project calls for a new road surface from the White River Bridge to the junction of SR 410 and SR 164 (Griffin Avenue).

The DOT says paving will take place nightly from 7 p.m. to 5 a.m., except Fridays. The work will require one lane to be closed, with alternating traffic guided by pilot cars.

“Drivers should expect minor delays,” according to the DOT.

During the day, work crews will close one lane of SR 410 in Enumclaw from 9 a.m. to 3 p.m. on weekdays for intersection improvements. The busy intersection of SR 410 and Cole Street will be realigned to increase visibility and curb ramps will be improved at SR 410 and Garrett Street.

Progress is weather-dependent, but the DOT anticipates wrapping up the project in August.