GRIMES, Iowa – The Iowa Department of Transportation’s Grimes Construction Office says, if you drive on eastbound Interstate 35/I-80 or east-/northbound I-235 to reach northbound I-35, or westbound I-80 to reach northbound I-35 at the Northeast Mixmaster, you need to be aware of upcoming nighttime construction work that may impact your trip.

Beginning tonight (Nov. 19), weather permitting, crews will close the westbound I-80 ramp to northbound I-35, east-/northbound I-235 to northbound I-35, and eastbound I-35/I-80 to northbound I-35 ramp (exit 137B), so work can take place. Single lane closures will begin around 8 p.m. at the Northeast Mixmaster. Full closures are expected to start at 10 p.m. Tuesday, Nov. 19 and will end at approximately 5 a.m. on Wednesday, Nov. 20, when the roadway is reopened. During the closures you will follow a marked detour route using I-35/I-80, U.S. 69/NE 14th Street (exit 136), Northeast 66th Avenue/Corporate Woods Drive, and I-35 (see map).

At 10 p.m. on Wednesday, Nov. 20 until 5 a.m. on Thursday, Nov. 21, crews will close eastbound I-35/I80 at U.S. 69/NE 14th Street (exit 136) and southbound I-35 to westbound I-235. When the lanes are closed and work is taking place, you will follow a marked detour route that uses U.S. 69/Northeast 14th Street and Northeast 66th Avenue/Corporate Woods Drive if you want to reach northbound I-35. If you wish to travel east on I-80 you will travel south on U.S. 69/Northeast 14th Street, east on U.S. 6/East Euclid Avenue, north on I-235, and then east on I-80 (see map).

At 10 p.m. on Thursday, Nov. 21, westbound I-80 will be closed at the ramp to northbound I-35. When the roadway is closed you will follow a marked detour route by traveling north on I-35 from westbound I-80 to reach Northeast 66th Avenue/Corporate Woods Drive (exit 89), and then exit and travel south on I-35 to reach westbound I-80.

The Iowa DOT reminds motorists to drive with caution, obey the posted speed limit and other signs in the work area, and be aware that traffic fines for moving violations are at least double in work zones. As in all work zones, drivers should stay alert, allow ample space between vehicles, and wear seat belts.

The latest traveler information is available anytime through Iowa’s 511 system. Visit 511ia.org; call 511 (within Iowa) or 800-288-1047 (nationwide); stay connected with 511 on Facebook or X (find links at https://iowadot.gov/511/511-social-media-sites); or download the free app to your mobile device.