Brick-and-ivory-sided home entrance with a covered concrete stoop and autumn oakleaf hydrangeas beside a front walk.

Downtown South Lyon's Road Work Has a November Finish Line, and the Holiday Calendar Is Lined Up Right Behind It

October 22, 2026

Since Oct. 19, a new phase of the Pontiac Trail rebuild has closed the east side of Lafayette Street at 10 Mile Road. The west side stays open so drivers can still turn south onto Lafayette, according to the City of South Lyon's detour notice. This is the latest of several detours on the same stretch since spring. The contractor's target for reopening the road is Nov. 15.

Downtown's holiday calendar doesn't wait for that date. Ladies Night Out, the first big shopping night, is set for two days before the target, and a free coupon offer meant to bring people downtown runs through the end of November. Then, three weeks after the road is supposed to reopen, comes the lighted parade. For most of November, holiday plans and the work zone will share the same blocks.

What has been under construction since May

The project is the Road Commission for Oakland County's rebuild of about one mile of Pontiac Trail, from 9 Mile Road to the CSX tracks just north of 10 Mile. Hometownlife reported in May that it costs roughly $11 million. Federal funding and contributions from the Road Commission, the City of South Lyon and Oakland County pay for it. The same story put traffic on that stretch at about 20,000 vehicles a day. It also said one goal is to fix flooding problems that go back decades.

Most of the work is underground, so for months there hasn't been much to see. The Downtown South Lyon road construction page lists the main parts of the job:

  • A rebuilt drain system between the Yerkes Drain and Detroit Street
  • A new storm sewer from the Yerkes Drain south to University Avenue
  • New traffic signals where Pontiac Trail/Lafayette meets Reynold Sweet Parkway, McHattie Street and 10 Mile/Lake Street
  • Crosswalks upgraded to ADA standards throughout the project
  • A longer southbound right-turn lane from north of 9 Mile to Princeton Drive

The signals are on a separate schedule. The Road Commission's May 15 release says the signal work at those three intersections will be done in 2027, so the November finish line covers the sewer, roadway and crosswalk work. The downtown authority's page names DiPonio Contracting as the contractor and lists mid-November as the expected completion.

The detours you're driving this week

The current closures were announced in a Road Commission alert dated Sept. 14 and started Monday, Sept. 21. 10 Mile is closed just west of Pontiac Trail, and northbound Pontiac Trail is closed from Liberty Street to the CSX tracks. Southbound Pontiac Trail stays open from the tracks to 9 Mile. The posted detours:

  1. West half of 10 Mile: 10 Mile to Rushton Road, to 9 Mile, to Griswold Road, then back to 10 Mile. The same route works in reverse.
  2. Northbound Pontiac Trail: 9 Mile to Griswold, to 10 Mile, to Martindale Road, to 11 Mile, then back to Pontiac Trail.

The Road Commission expected the 10 Mile closure to last through late October and the whole project to finish in November. WHMI reported the same timeline when the closures began. The Oct. 19 change at Lafayette shows the work is still moving around the 10 Mile intersection as the month ends. Check the city's posted map before you count on any one turn.

Treat Nov. 15 as a target. In its May 15 release, the Road Commission said the contractor expected to have the road substantially complete and open to traffic by that date. That release came out at the start of the project. The downtown authority's more recent updates still say "November" and "mid-November" without a firm day.

How the dates stack up

This is the stretch from now through early December, with how firm each date is:

Date What Status
Fri., Oct. 30 City posts the three winning addresses in the Halloween Home Decorating Contest Scheduled by the city
Fri., Nov. 13, 5–9 p.m. Fall Ladies Night Out downtown Listed as tentative
Sun., Nov. 15 Contractor's target to reopen Pontiac Trail/Lafayette Estimate from May
Mon., Nov. 30 Last day of South Lyon Cycle's $25 coupon offer While coupons last
Sat., Dec. 5 Holiday Spectacular lighted parade and McHattie Park tree lighting Date posted, times not yet posted
Thu., Dec. 31 South Lyon Cycle coupons expire Printed on the offer

Ladies Night Out is the first holiday event, and it falls during construction. The parade is the first event planned to fall after it.

Ladies Night Out lands in the work zone

The Fall Ladies Night Out page lists Friday, Nov. 13, from 5 to 9 p.m., with a holiday theme. It includes swag bags for the first 250 customers who make any donation to Active Faith, plus a DJ, a photo booth and the Sidecar Social District. The page labels the schedule tentative, so check it again closer to the date.

If the contractor stays on schedule, that Friday falls two days before the reopening target. Expect to plan around whatever detour is in place that week. The downtown authority has kept one message on its homepage all fall: "Downtown South Lyon is OPEN." It has asked people to keep supporting local businesses while the work continues. The Road Commission and the downtown project page both say southbound traffic and sidewalk access to businesses stay open during construction. On-street parking along the work zone is not allowed.

The Sidecar Social District is the downtown area where you can carry a drink bought from a participating licensed business. City Council approved it in June 2023, and it opened that September, as WHMI reported at the time. Downtown South Lyon's current list of participating businesses includes:

  • South Lyon Hotel, 201 N. Lafayette St.
  • Corner Social, 101 S. Lafayette St.
  • Waycaster Tiki Bar, 228 S. Lafayette St.
  • Dua Vino, 135 E. Lake St.

Three of the four are on Lafayette, the street under construction. Dua Vino is on Lake Street, just east of the 10 Mile intersection where work is going on now.

A coupon that sends people to the downtown blocks

South Lyon Cycle, 209 S. Lafayette St., sits right on the work zone, and Downtown South Lyon's homepage is promoting an offer there for the first 150 people who test-ride a bike. Each gets a free $25 coupon to spend at participating downtown businesses. No purchase is needed. The limit is two coupons per household, and riders must be 18 or older.

The offer runs through Nov. 30, while coupons last, and the coupons are good through Dec. 31, 2026. So a coupon you get now can be spent at Ladies Night Out on Nov. 13, after the road's target reopening, on the parade weekend and through the rest of the holiday shopping season. The promotion ends with a line about "build[ing] an even better downtown together," which ties the offer directly to the project.

Lake Street has one restaurant this holiday season that it didn't have last year. Maple House opened April 29 at 127 E. Lake St., where Lake Street Tavern used to be. Hometownlife described it as a breakfast and brunch spot with a coffee bar and a full-service bar. It opened about two weeks before construction started May 11, so it has spent roughly its first six months next to the work zone.

Dec. 5 is the first big night planned after the reopening

The Holiday Spectacular page lists Saturday, Dec. 5, with a traditional lighted parade and a tree lighting at McHattie Park. Start times and the parade route aren't posted yet. Last year's schedule had a different tree-lighting location, so don't use it to plan this year's evening.

McHattie Street is one of the three intersections in line for new signals, though the Road Commission has scheduled that signal work for 2027, so the Dec. 5 crowd will still be crossing under the current ones. If the November target holds, people heading to the tree lighting will use the rebuilt roadway and upgraded crosswalks for the first time at a large downtown event. If the schedule slips, the parade becomes the first test of how a crowd moves around whatever work is left. The Dec. 5 date is three weeks after the target, which leaves some room either way.

The South Lyon Area Historical Society lists its Christmas at the Village program with "2026 Date TBD." Its listing includes village tours and a bake sale. Check that page if the Witch's Hat Depot grounds are part of your usual holiday plans.

Before the holidays start: the Halloween map

The city's Halloween Home Decorating Contest comes first. Council Members Margaret Kurtzweil, Lisa Dilg and Lisa Popa judged entries in the evenings from Oct. 26 through Oct. 28, based on what can be seen from the street. On Friday, Oct. 30, the city will post the three winning addresses on its websites and social media, along with a map so the community can drive or walk past the displays. If you plan to drive the route over Halloween weekend, check the posted detours first. Northbound Pontiac Trail is still closed between 9 Mile and the tracks.

I've been following the Pontiac Trail project block by block. When it opens, I'll be watching whether a quicker trip through downtown South Lyon makes a difference for the homes nearby. If you're thinking about a move around these blocks and want a clear read on what the rebuild means for your street, Sherry Cynowa is glad to talk it through. Let's Connect.

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Veteran Michigan Real Estate Agent since 1994, Sherry is “short in stature and tall on results,” bringing local expertise and a passion for helping you achieve your real estate goals.