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What does CTH mean in roads?

Published in Road Designations 3 mins read

In the context of roads, CTH primarily stands for County Trunk Highway, a designation used for roads maintained at the county level or below, particularly in the U.S. state of Wisconsin.

Understanding CTH in Road Networks

The acronym CTH signifies a County Trunk Highway. These roads are an integral part of the local transportation network, distinct from state or federal highways. While CTH is common in Wisconsin, for broader national mapping software and app consistency, these roads may also be labeled as CR (County Road) or simply County Highway.

To clarify, here's a quick overview:

Acronym Full Meaning Primary Location Maintenance Level Alternative Terms
CTH County Trunk Highway Wisconsin, USA County level or below County Highway, CR, County Road

Role and Maintenance of County Trunk Highways

County Trunk Highways serve to connect smaller communities, provide access to rural areas, and link various state and federal routes within a specific county. Unlike interstate highways or U.S. routes which are part of national systems, or state highways managed by the state's Department of Transportation, CTH roads are under the jurisdiction and maintenance responsibility of individual county governments.

Key characteristics and functions include:

  • Local Governance: Each county in Wisconsin is responsible for the funding, construction, and upkeep of its designated County Trunk Highways. This includes everything from paving and snow removal to signage and bridge maintenance.
  • Connecting Communities: They often form the primary arteries for local travel, connecting towns, villages, and unincorporated areas within a county.
  • Supplementary Routes: CTH roads frequently act as feeder routes to larger state and federal highways, facilitating regional travel and commerce.
  • Unique Numbering System: Each county typically has its own unique numbering or lettering system for its CTH roads, which may not be consistent across county lines.

Understanding these designations is crucial for navigation and comprehending the jurisdictional responsibilities for road infrastructure. More information on Wisconsin's transportation system can often be found through the Wisconsin Department of Transportation.

Common Roadway Designations in the U.S.

To further contextualize CTH, it's helpful to know other common road designations found across the United States:

  • Interstate Highways (I-): Part of the Dwight D. Eisenhower National System of Interstate and Defense Highways, these are high-speed, controlled-access freeways connecting major cities across states. They are federally funded and typically maintained by state DOTs.
  • U.S. Routes (US- or U.S. Hwy): These are numbered highways forming a national network, established before the Interstate system. While they traverse multiple states, they are generally maintained by individual state DOTs.
  • State Highways (State Hwy or SR): Roads maintained by the respective state's Department of Transportation. Their numbering system and standards vary widely from state to state.
  • Local Roads: This broad category includes municipal roads, town roads, and sometimes unpaved roads, maintained by city or town governments, or local districts.

CTH falls under the umbrella of local roads but has a specific and important role in the county-level road network, particularly in states like Wisconsin.