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US 95 in San Luis stays down to one lane each way through late December
ADOT is building a raised median between County 21st and County 22nd streets. Until it's done: 35 mph, one lane in each direction and nothing wider than 12 feet.
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If you've been squeezed down to one lane on US 95 in San Luis lately, it isn't your imagination. And it isn't over yet.
The Arizona Department of Transportation, working with the City of San Luis, is installing a raised median on US 95 between County 21st Street and County 22nd Street. The lane restrictions began Sept. 28, and the work is expected to finish in late December, according to ADOT.
Until then, ADOT says that stretch looks like this:
- One lane in each direction, northbound and southbound.
- A 35 mph speed limit.
- A 12-foot vehicle width restriction.
That last one is the one to remember if you're hauling farm equipment, a wide trailer or anything else oversized. Twelve feet is the limit, so plan another way around.
What's being built
ADOT describes new concrete median curb and median paving, removing and replacing asphalt, and new signs and pavement markings where needed.
What ADOT's materials don't say is what problem the median is meant to fix. If ADOT or the city explains it, I'll add it here.
Staying ahead of it
ADOT says it will give advance notice of new restrictions. Its project page has a map of the work zone, and ADOT lists a bilingual project information line at 855-712-8530.
Where this comes from
- [US 95, County 21st Street to County 22nd Street Raised Medians](https://azdot.gov/projects/southwest-district-projects/us-95-county-21st-street-to-county-22nd-street-raised-medians), ADOT project page. Source for the location, the San Luis partnership, the project elements, the map and the information line.
- [Plan for lane restrictions on US 95 in San Luis beginning Sept. 28](https://azdot.gov/plan-lane-restrictions-us-95-san-luis-beginning-sept-28), ADOT traffic notice. Source for one lane each way, 35 mph, the 12-foot width limit and the Sept. 28 start.
- [US 95 raised medians project fact sheet (English)](https://azdot.gov/sites/default/files/2026-10/Flyer-Us-95-Median-Bilingual-Fact-Sheet-Eng.pdf) and [Spanish](https://azdot.gov/sites/default/files/2026-10/Flyer-Us-95-Median-Bilingual-Fact-Sheet-Spn.pdf), ADOT, October 2026. Source for the late December completion and advance notice of restrictions.
- [Planholders list, project 2024066](https://cnsads.azdot.gov/planholders/2024066), ADOT Contracts and Specifications. Source for the description of work.
Sources 5
- Primary source · Public statementPlan for lane restrictions on US 95 in San Luis beginning Sept. 28
Arizona Department of Transportation traffic notice. Source for the lane, speed and vehicle width restrictions and start date.
- Primary source · Public statementPlanholders list, project 2024066
Arizona Department of Transportation Contracts and Specifications. Procurement planholder record.
- Primary source · Public statementUS 95 raised medians project fact sheet (English)
Arizona Department of Transportation, October 2026. Project schedule and advance notice of restrictions.
- Primary source · Public statementUS 95 raised medians project fact sheet (Spanish)
Arizona Department of Transportation, October 2026. Spanish version of the project fact sheet.
- Primary source · Public statementUS 95, County 21st Street to County 22nd Street Raised Medians
Arizona Department of Transportation project page. Source for location, project elements, map and information line.