The City of Thornton Traffic Engineering Division maintains the traffic signs and pavement markings. To request traffic signs or pavement markings, please call 720-977-6490 or email the Traffic Division at Infrastructure.

To report damaged or worn out signs or pavement markings, please call 720-977-6490 or email the Traffic Division at Infrastructure.

Signs are placed in compliance with the Manual of Uniform Traffic Control Devices, State statutes, and City ordinances.