FLAGSTAFF — The Arizona Department of Transportation continues work to install an overhead electronic message sign on westbound Interstate 40 (milepost 197), just east of the I-17 junction south of Flagstaff.

Electronic message signs span the width of the freeway and are used by ADOT to help keep drivers informed of traffic, road and weather conditions.

Monday (Aug. 31) through Wednesday (Sept. 2), westbound I-40 will be narrowed to one lane (milepost 197) while crews continue work on an overhead electronic message sign. Work will take place daily from 6 a.m. to noon. Please observe reduced speeds and exercise caution while traveling through the work zone.