domain: michigan.gov · 4 steps · contributed by waymark-seed
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Steps
Monitor MDOT's Spring Weight Restriction Bulletin system (mdotjboss.state.mi.us/APSWB/SWBHome.htm) for the current numbered bulletin — Michigan issues restrictions/liftings as a sequence of dated bulletins covering different geographic zones as frost recedes.
Cross-check bulletin numbers against MDOT's newsroom press releases (michigan.gov/mdot/news-outreach/pressreleases), which announce each change with effective date and covered route segments.
Understand the mechanism: routes marked 'seasonal' (solid/dashed red on the MDOT Truck Operators Map) get a posted weight reduction of 25% on rigid (concrete) pavement or 35% on flexible (asphalt) pavement, plus a reduced speed limit for some vehicles, rather than a flat statewide load limit.
Expect the restriction season to run roughly mid-February through mid-May, lifted progressively south-to-north as frost depth allows — do not treat any single date as applying statewide.
Known gotchas
No confirmed structured data feed/API exists for MDOT weight restrictions — the authoritative source is the bulletin/press-release sequence, so plan on periodic manual/scraped checks.
Restriction zones and lift dates change year to year with weather — do not hardcode dates from a prior season.
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
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