Winter service in Madison

A winter that has been written down since 1855

Most cities estimate their winters. Madison has counted them.

Every year since 1855, someone has recorded the day Lake Mendota froze over and the day it opened again, and the Wisconsin State Climatology Office still makes the call. It is one of the longest continuous ice records in North America, and it says that a normal Mendota winter is 102 days of ice, from about 20 December to about 4 April.

It also says the winter is getting shorter. Across the first fifty years of the record, mean ice duration was about 113 days. Across the last thirty, it is about 81 — freeze-up roughly 18 days later, thaw about 15 days earlier. In 2001/02 the lake held ice for 21 days, the shortest season ever recorded, and on 30 January 1932 it had not frozen at all yet.

That is the backdrop, and it is worth having, because almost nothing else about Madison’s winter is unusual on paper. The distinguishing facts are all about the same lakes: what they do to the shape of the city, and what the city puts on the ground between them.

The snow arrives in a narrow window

On the 1991–2020 normals Madison records 51.8 inches a season — a figure the Wisconsin State Climatology Office states in exactly those words, which is worth noting because lower numbers circulate.

The interesting part is the distribution. December, January and February carry 38.5 of those inches — about 74 %. March adds 7.0, November 3.0, and April 2.6. This is not a city with a long tail of nuisance snow at either end of the season; it is a city with a concentrated high winter and comparatively quiet shoulders. Measurable snow falls on about 37.9 days a year, ten of them in January alone.

There is a comparison worth making here, because it runs against the obvious assumption. Milwaukee, eighty miles east and directly on Lake Michigan, averages 48.7 inches — three less than Madison. The city with the lake gets less snow than the city without one, because Milwaukee sits on the lake’s upwind shore and the water tends to take snow off the lakefront rather than add to it. Madison’s winter is simply continental.

The cold is the steadier commodity. The temperature stays at or below freezing all day on about 59 days a year, and 16 nights reach 0 °F (−18 °C) or lower. January’s mean is 19.4 °F (−7.0 °C). Those are the numbers that decide what works on the ground, because the City’s own threshold for salt on a sidewalk is 15 °F (−9.4 °C) — below that it tells residents to use sand, since salt is simply too slow to be useful.

The deadline is a time of day, not a countdown

Madison General Ordinance 10.28(1) puts it plainly. The owner must remove all snow and ice from the abutting sidewalk

“not later than 12:00 noon of the day after the snow or ice has accumulated on the sidewalk, regardless of the source of accumulation”

and a corner property clears both frontages, including “that portion of the sidewalks bordering the crosswalk, including the curb ramp, if any”. The full text is in Chapter 10 of the Madison General Ordinances (PDF). The City’s winter pages state the same deadline slightly differently — “by noon the day after the snow stops” — and add that what must be cleared is the entire width of the walk, edge to edge. The deadline is identical either way; the trigger is not, and in a storm that pauses and resumes the ordinance’s wording is the earlier of the two.

A fixed clock time is the unusual choice here, and the surrounding county shows why it matters. Fitchburg also uses a clock — 6 p.m. of the following day under Sec. 27-114, six hours more generous than Madison’s. But Middleton, Monona, Verona and Sun Prairie all run a rolling 24 hours from the end of the snowfall. So the same storm produces different obligations depending on which side of a municipal line the property sits: snow that stops at 9 p.m. leaves a Madison owner about fifteen hours, and a Middleton owner twenty-four. Snow that stops at 6 a.m. leaves the Madison owner thirty. Sun Prairie gives one written warning per winter season before it cites. Madison gives none at all.

What “no warning” means in practice

That last point is not a figure of speech. Building Inspection states that it

“does not issue warnings before issuing a citation for failure to clear snow and ice from a sidewalk in a timely manner due to covered walkways being a public safety hazard.”

The forfeiture written into the ordinance is $20–$50 for a first offence and $30–$100 for a repeat, with each day a separate offence. What actually arrives is larger, because Wisconsin’s penalty assessment, judicial and crime lab surcharges and court costs are added on top: the City publishes the totals as $124 and $187.

Then there is the second track. The City re-checks the walk the day after a citation, and if it is still covered, crews clear it and bill the property — a minimum of $153, up to $196 where sand and salt are used. Under 10.28(2) that cost is assessed “against the property as a special charge under Section 4.09(13)”, which means it follows the property rather than becoming a debt to pursue. The ordinance is explicit that the two tracks are independent: prosecuting under one “shall not bar the City from proceeding” under the other.

How much this bites depends on the winter. Across November to March, the 2025/26 season brought 50.6 inches, 1,238 complaints about uncleared sidewalks and 584 citations. The season before it brought 22.1 inches, 584 complaints and 182 citations. Roughly double the snow produced roughly triple the citations.

The city that took salt out of its own ordinance

Here is the part that exists nowhere else in quite this form. Madison has amended its sidewalk ordinance twice, in opposite directions from most of the country, to get salt off the pavement.

The first amendment, ORD-19-00095, was titled “to discourage the use of salt for ice removal in very cold temperatures”. Before it, 10.28(1) told owners faced with ice that could not be removed to keep it “effectively sprinkled with sand, salt or other suitable substance”. After it, the clause reads “sprinkled with sand or other suitable substance”. The word salt was simply struck out.

The second, ORD-22-00112, was adopted unanimously on 25 October 2022 and enacted that November. It added the other half:

“Reasonable quantities of salt and other lawful chemical melting agents may be used when ice is present or imminently likely to form, but only to the extent necessary to treat the ice so that the ice can be removed. … Excess salt and other lawful chemical melting agents shall be removed following ice melt or snow removal.”

An obligation to sweep the de-icer back up is a genuinely unusual thing to find in a municipal code, and the legislative file gives two reasons for it. One is that heaped salt is itself an obstacle on a walk, particularly for disabled pedestrians. The other is the water.

The measurements behind that are the ones that make the argument. Chloride in Lake Wingra has risen about 2 mg/l every year since 1962, passing 100 mg/l by 2016 — around ten times the early-1960s concentration. Mendota, Monona, Waubesa and Kegonsa each climb about 1 mg/l a year. It has reached the taps as well: three of the City’s 22 wells are affected, and Well 14 on University Avenue measured 71 mg/l of sodium in 2023, against an EPA guidance level below 20. A city whose downtown sits between two of those lakes is, in the most literal sense, salting its own drinking water.

The corresponding advice to residents is unusually concrete: a 12-ounce coffee mug of salt covers about ten sidewalk squares, applied after shovelling rather than instead of it, and not at all below 15 °F. On its own streets the City pre-treats with brine, which it says “can reduce salt use by up to 70 percent”, and it runs a Winter Salt Certification course that private applicators can take too. For a contractor working here, the de-icing record — what went down, how much, at what temperature — has stopped being merely good practice and started being the answer to a possible complaint.

Nearly 1,800 miles of lane, and half of it waits

During the snowfall itself, most of Madison is not being plowed at all.

The city has almost 1,800 miles of traffic lanes. The salt routes — arterials, Metro Transit routes, and the streets serving schools, hospitals and emergency services — make up about half of that, and while it is snowing, 32 trucks run those routes in loops and nothing else. Residential streets wait.

They wait for the citywide operation, which begins once three or more inches have accumulated and the storm is at or near its end. That operation deploys 150 pieces of equipment, drawn from the Streets Division, Parks, Engineering and outside contractors, across more than 60 sub-areas worked simultaneously. The City answers the obvious complaint in advance: “No neighborhood is assigned to be last.” A full pass over every lane, thoroughfares to cul-de-sacs, takes 12 to 16 hours. In the January 2024 storm — close to 20 inches over four days, which the mayor’s office ranked among the five worst the city has faced — operators were covering 24-mile loops in about two and a half hours.

The isthmus: nowhere to put it

Everything above is a resourcing story. The isthmus is a geometry one.

Downtown Madison sits on a neck of land between Lake Mendota and Lake Monona, crossed by exactly three east–west arterials: East Washington Avenue (US 151), East Johnson Street and East Gorham Street. About a fifth of the city’s area is water — 21.96 of 101.53 square miles. There is no ring road option and no spare ground, and the City says so directly: “Snow removal operations are expensive and our places to store removed snow are limited.”

The consequence shows up on named streets. On E. Gorham, E. Johnson and Jennifer Street, the City describes parked cars and accumulated snow producing a “gradual narrowing of the on-street bike lane” that pushes cyclists into the traffic lane. Clean-up crews working the 1–7 a.m. parking window concentrate on “the narrow streets within the snow emergency zone” — which is to say, the ground where there is least room is also the ground under the strictest parking rule.

Those rules: alternate side parking, 15 November to 15 March, 1:00–7:00 a.m., determined by house-number parity rather than compass direction — odd dates, odd side. Since the 2025/26 season the City has been testing delayed enforcement, so it starts with the first general plowing operation or the first snow emergency instead of automatically on 15 November. A declared snow emergency comes at the same three-inch threshold, is announced before 9 p.m. on the night it takes effect, usually runs two days, and is the one time the isthmus and neighbourhoods such as Marquette, Tenney-Lapham, Vilas and Greenbush lose their exemption. City garages with gated sections are free from 9 p.m. to 7 a.m. while it lasts.

Two things the maps get wrong

The bike paths are not cleared first. Madison’s reputation invites the assumption; the City’s own page refuses it. Arterial off-street paths are plowed “as needed after any snow event”, in the same operation as the streets, with a second pass afterwards to cut the windrows thrown across the crossings. On-street bike lanes are candid: “Bike lanes are rarely cleared down to the bare pavement.” Most lie on salt routes and get treated along with the road, but snow is hauled only when a street has narrowed significantly — not to reopen a lane. The City’s winter advice says the day of a storm and a day or two after are not good days to ride.

The campus is not the city. UW–Madison clears its own ground: 60 miles of sidewalk, 13 miles of road, 100 parking lots and 60 bus stops across 938 acres, with some shifts starting at 6 a.m. and clearing work beginning after midnight. Roads, bus routes, busy pedestrian areas and accessible routes and ramps come first; pre-treatment uses brine recovered from the campus heating plants. The campus calls its own “Snow Action Day”, which is explicitly not the City’s snow emergency. And the gradient people actually feel is here: Bascom Hill climbs 86 feet over 850 feet, about a 10 % grade, which is where the university concentrates its salt — on “stairs, building entries and hills”.

A city where the duty and the shovel are often different people

One last local reality, and it is the one most likely to produce an argument.

MGO 10.28(1) names the owner. But about 53 % of Madison’s roughly 126,000 households rent, and the City’s guidance to tenants is to read the lease to see who handles snow removal. Those are compatible statements, not contradictory ones, but they leave a gap: on a large share of Madison properties the person who must shovel by noon is not the person the ordinance names, and the citation goes to the address. For anyone managing buildings here — or clearing them under contract — that is worth settling in writing before the season rather than after the first $124 arrives. The City does make one accommodation: older residents and people with disabilities can apply for deadline extensions and shovelling help through the Department of Civil Rights.

Keeping the record a Madison winter asks for

Madison is a city that writes things down. It has a lake-ice series running to 1855, a published count of complaints and citations by season, a rule of thumb measured in coffee mugs, and an ordinance that now cares not just whether you treated the ice but whether you cleaned up what you used.

If you clear snow here commercially, that is the standard your own paperwork is being measured against. Wintertrace is self-hosted software for recording winter service work: what was cleared, when, by whom, with which material and at what dosage, with the weather conditions of the shift attached and a service record you can produce weeks later. It runs on your own hosting, without a subscription, and the data stays with you.

For a noon deadline the useful evidence is a timestamp rather than a recollection. And for an ordinance that limits salt “to the extent necessary” and requires the excess to be swept up, being able to show how much went down, and when, is worth having on both sides of the conversation — with the property owner, and with the inspector.

A note on all of the above

This page is general information about winter service in Madison, Wisconsin, drawn from the City’s published material and the Madison General Ordinances as of September 2026. It is not a substitute for legal advice, and it is not a statement of what applies to any particular property. Ordinances are amended — 10.28(1) twice in recent years — and the alternate side parking programme is currently running as a test, so check the City’s current pages and the ordinance text itself before relying on anything here.