Knowledge Base

Who builds and maintains traffic signals in Jefferson County?

Contractors build traffic signals in Jefferson County as part of capital improvement and safety projects, or larger private developments.  All traffic signals on the Jefferson County roadway system are owned and operated by the county once constructed.

Traffic signals located along state highways, (e.g. SH-93, SH-58 and at on-and-off ramps to C-470), are maintained by the Colorado Department of Transportation (CDOT).

Traffic signals located within incorporated cities or towns (e.g. Arvada, Lakewood, Golden, etc.) are maintained and timed by the respective local jurisdiction.

The Transportation and Engineering Division maintains traffic signals on unincorporated county roads. Much of the maintenance work performed on traffic signals is done by the county’s contractor.

Updated 2/3/2022 10:36 AM
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