Wisconsin/Highway Classification

This is a draft. Feel free to contrubute where you can.

General Guidelines

Trunk

The Wisconsin DOT publishes their Connections Transportation Plan which outlines which corridors are the most important in the state. All "backbone" routes should be trunk/motorway. Many of the "connector" routes may also be highway=trunk, and a route being in the Connections Plan is a prerequisite for a long distance route to be classified as highway=trunk.

Primary

Nearly all US highways are primary (except when they are a freeway or are deemed to be highway=trunk Many Wisconsin State Highways are also important enough to be highway=primary. This is often evidenced by their inclusion in the National Highway System.

Secondary

Wisconsin State Highway Routes should be highway=secondary unless it is the main connection between large towns. Some county highways should also be highway=secondary given they form an important connection between minor population centers, or is an urban arterial.

Tertiary

The majority of county highways should be highway=tertiary.

City Importance

Tier 1

Tier 1 cities should be connected with a highway=motorway or highway=trunk

Tier 2

Tier 2 cities should be connected with a highway=primary

Tier 3

Since Wisconsin state highways aim to connect every town with population at least 2 500, this is a natural place to designate cities as tier 3. In general, since state highways are at least highway=secondary, this is already accomplished.

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