US 131 Adds Flex Shoulder Lane to Ease Peak Traffic
Fleet operators and businesses using the I-96 to Post Road segment should plan around a lane that opens only during peak periods.
Updated on Oct. 31, 2026 in Employment
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The Michigan Department of Transportation (MDOT) will add a flex route shoulder lane to US 131 from I-96 to Post Road, with work beginning in spring 2027. Operators who ship or commute along the corridor should plan around peak-period lane availability once the project begins.
Why it matters
The project pairs a managed shoulder lane with wider shoulders, bridge rehabilitation, emergency pull-off sites, and better incident management, aiming to increase safety, reduce crashes, improve traffic flow, and extend bridge service life. Congestion and crash risk on this corridor directly affect delivery timing, driver scheduling, and fleet costs for businesses that depend on it.
Rush-hour traffic on the corridor typically crawls at about 5 mph, the baseline the flex route is designed to relieve. The source gives no cost, crash-count, or travel-time figures to compare against.
The players
Michigan Department of Transportation (MDOT)
The state agency responsible for planning, building, and maintaining Michigan's state highway system, including US 131.
The details
The flex route uses a lane control system of signs, vehicle detectors, and electronic message boards to signal when the shoulder lane is open, and the lane is closed during non-peak times of the day. Alongside the flex route, MDOT will widen shoulders and make improvements on both northbound and southbound US 131, rehabilitate and widen bridges, add emergency pull-off sites, and improve incident management. Together these changes target safety, crash reduction, and smoother traffic flow along the corridor.
Timeline
Spring 2027: MDOT begins shoulder widening and bridge work on US 131.
Market Landscape
Managed shoulder lanes controlled by signs and vehicle detectors are a known tool for relieving peak-period congestion on busy highways. US 131 is being upgraded with that tool alongside bridge and shoulder work rather than as a standalone fix.
Fleet and logistics operators should factor in possible lane-availability limits on US 131 during peak periods once work starts in spring 2027. Plan dispatch and driver schedules around the flex lane's open hours rather than assuming full shoulder capacity.
The takeaway
Track the spring 2027 start date and the published peak-period hours for the flex lane, and build them into delivery windows along the I-96 to Post Road segment. Ask your logistics provider how it plans to handle any construction-related delays.
What happens next
MDOT is scheduled to begin the shoulder widening and bridge work on US 131 in spring 2027.
Further reading
For context on how transportation disruptions shape hiring and labor availability, see our Employment coverage.
Source note: This article includes information reported by 97.9 WGRD.
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Do you expect your commute to get better once the US 131 project finishes?
