Number 3: Gates Pass Safety Improvement Project

Perhaps the most complex on the Top 10 list, the job improved a steep and narrow two-lane roadway that consisted of 9- to 10-ft-wide lanes. Two, 10-hour shifts working seven days a week completed the project in 30 days.

Location: Pima County, Ariz.
Cost: $524,000
Length: .5 miles
Designers: MMLA Psomas, Saguaro GeoServices Inc., Sage Landscape Architecture & Environmental Inc.
Owner: Pima County DOT Contractors: KE&G Development LLC, Saguaro GeoServices Inc., Rockbreakers Inc.