Construction Alerts

Continuous single lane closures on North Main August 23-25

Beginning at 7:00 am Wednesday, August 23, MDOT will be closing lane(s) on northbound Main Street from Huron Street to M-14, with lane closure(s) on southbound Main Street, Huron Street to M-14, to follow. The lane closures are expected to last through Friday night, August 26. Motorists should anticipate heavy traffic congestion, and avoid the area/seek alternate routes if possible. Visit MDOT online for more details.

North Main Street lane closures for road resurfacing and sidewalk repairs

Beginning August 1 and lasting until the end of Labor Day, North Main Street between Huron Street and M-14 will have lane closures in place for road resurfacing and repairs to curbs, gutters, and sidewalks.

  • One northbound lane is expected to be closed between 7 a.m. and 3 p.m. Monday through Friday. One northbound lane is expected to be closed throughout the weekend, between 8 p.m. Friday and 7 a.m. Monday.
  • One southbound lane is expected to be closed between 10 a.m. and 4 p.m. Monday through Friday. One southbound lane is expected to be closed throughout the weekend, between 8 p.m. Friday and 7 a.m. Monday.
  • There will be no lane closures during holiday weekends or during U-M home football games.


Maiden Lane between Island Drive and Maiden Lane Court Resurfacing 

Beginning Wednesday, July 13, 2016, Maiden Lane will be closed to through traffic in the westbound direction between Fuller Road and Maiden Lane Court.  During this time, westbound traffic will be detoured around the construction work zone/closure area using Fuller Road, Glen Avenue, East Huron Street, North Division Street, and Broadway Street; see attached map for detour route.  Island Drive traffic will be directed to use Island Drive Court and Nielsen Court.  Local traffic access to residences and places of business along Maiden Lane will be maintained in both directions west of the closure area.  Weather permitting, the work is expected to be complete on the afternoon of Monday, July 18, 2016, with the street reopened to two-way traffic at that time.  Please see U-M Parking and Transportation Services website for detours to U-M bus routes:   For more information on AAATA bus route detours, please visit

City of Ann Arbor: Observatory St Water Main and Road Reconstruction Project

Please be advised that Observatory Street between East Ann Street and Geddes Avenue will be closed in phases for a water main and road reconstruction project. Work is expected to begin in early May and last through July. Access to the Cardiovascular Center will be through Ann Street.  Pedestrian access will be maintained through the Observatory Street area, but bus routes will be modified (for details visit )  Be sure to plan ahead and expect delays.

View this pdf for a map of the construction project.

I-94 Concrete Patching Between US-12 & Rawsonville Rd

The Michigan Department of Transportation will oversee a pavement patching and repair project on I-94 between the east junction of US-12 and Rawsonville Road starting Wednesday, May 11, 2016. The project is expected to be completed in August 2016.

During construction, there will be nighttime double-lane closures and weekend single-lane closures on I-94.

Starting Wednesday, May 11, 2016 there will be double-lane closures overnight 9:00pm - 5:00am.

From 9:00pm Friday, May 13, 2016 through 5:00am Monday, May 16, 2016 there will be a continuous single-lane closure on I-94, with the double-lane closures overnight.

View this site for the Michigan Department of Transportation map of construction.

City of Ann Arbor: Notice of Construction: Depot Street (N.Main St. to Carey St)

The City of Ann Arbor will soon begin construction on Depot Street as part of the citywide Street Resurfacing – 2016 project. Work will include partial depth removal and replacement the asphalt pavement to eliminate pot holes, provide a smoother driving surface, and increase the service life of the street. It will also include replacing storm water inlets, segments of concrete curb, and concrete sidewalk ramps (as required to meet current Americans with Disabilities Act standards).

Construction is planned to start the week of May 9, 2016, and is expected to last approximately five (5) weeks, weather permitting, and barring no unforeseen complications and/or delays.

View this pdf for a map of the construction project

I-275 Construction

The I-275 freeway is going to be experiencing significant closures that directly impact access to the Northville Health Center, Livonia Health Center and Livonia Center for Specialty Care. Starting Mid-April through Mid-September the construction will take place on I-275 stretching from 5 Mile Rd to the I-696 interchange. They will be closing one direction of the freeway at a time (North/South), in addition , to other road and exit closures as they fix the freeway and bridges.

For detailed information visit:


More information about event road closures and other City of Ann Arbor traffic updates can be found at

Between road construction in the City of Ann Arbor and changes to improve our patient, education and research facilities, Ann Arbor and the University of Michigan Health System are busy places.

When possible, we will post relevant construction alerts on our pages.

You may also want to visit:

Ann Arbor Area Transit Authority (AAATA) Bus Detours, Routes and Schedules

MDOT (Michigan Department of Transportation)

University of Michigan Parking & Transportation Services