Linda Ritter, a spokeswoman for the Arizona Department of Transportation, said the project would take about 30 private-sector workers a year.
had considered replacement a priority because of safety and hazard issues.
had plans to replace them to comply with new sign requirements to meet minimum reflectivity standards for night driving, when the signs are illuminated only by vehicles' headlights, Ritter
When federal economic stimulus funds became available, the I-19 signs were among 41 projects that the state Transportation Board approved, she
added that some drivers complained when the signs first went up of being confused by use of metric designations.
said the governor asked her staff and ADOT
to study the impact and options further, and the department has suggested posting new signs with both kilometers and miles for a few years - something that Green, for one, questions.