The state highways of Colorado are a system of public paved roads funded and maintained by the

Colorado Department of Transportation The Colorado Department of Transportation (CDOT, pronounced See Dot) is the principal department of the government of Colorado, Colorado state government that administers state government responsibility for Transportation in Colorado, transport ...

(CDOT) in the U.S. state of

Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

. These are

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...

s, which are typically abbreviated SH. The numbered highways within the state begin at 1 and increase, with exception of numbers already designated as

United States Numbered Highways The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these h ...

Interstate Highway The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Hi ...

s. In 1953, many highways were decommissioned or lost mileage. Before the 1968 Colorado state highway renumbering, highways were cosigned with U.S. Highways and Interstate Highways, and there were highways matching U.S. Highway and Interstate Highway numbers.

Description

The numbered state highway system covers approximately 3,135 miles of road in Colorado, subtracting the total miles of Interstate and US Highways from 9,100 miles of the state highway system. These are maintained using state funds which are collected by state and federal gas tax and a portion of vehicle registration fees. Unlike the numbering systems of the Interstate Highway System and the United States Numbered Highway System handled by the

American Association of State Highway and Transportation Officials The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway A highway is any public or private road ...

(AASHTO), the numbered state highway system is a separate system used by the state. The route markers used are separate from neighboring states rather than being consistent. In Colorado, the route markers are designed with the state flag on the top half and the number on the bottom half. Most state highways are generally two lane roads with speed limits up to 65 miles per hour in rural areas but can drop as low as 30 miles per hour in served communities. In urban areas, they can be six to eight lane expressways primarily in

Denver Denver ( ) is a List of municipalities in Colorado#Consolidated city and county, consolidated city and county, the List of capitals in the United States, capital and List of municipalities in Colorado, most populous city of the U.S. state of ...

and

Colorado Springs Colorado Springs is the most populous city in El Paso County, Colorado, United States, and its county seat. The city had a population of 478,961 at the 2020 census, a 15.02% increase since 2010. Colorado Springs is the second-most populous c ...

. Some numbered routes are concurrent with US highways and Interstate Highways and concurrent sections of state highway are not recognized by CDOT. Concurrent sections generally have their mileage based on the Interstate or US Route mileage (e.g. SH 88 being concurrent with I-25) and are sometimes unsigned. The longest state highway is State Highway 14 with a span of nearly between Muddy Pass and Sterling. State Highway 110 is the shortest route maintained by CDOT with a span of . The

(CDOT) is the agency responsible for maintaining the Colorado State Highway System, including Interstate Highways, United States Numbered Highways, and numbered state highways within the state of Colorado.

State highways

Special routes

Notes

References

External links