While everyone wants an easier commute, no one wants to go through costly, time consuming upgrades to roadways. So when Sundt and a joint venture partner proposed adding 30 miles of High Occupancy Vehicle (HOV) lane to the Loop 101 highway a full 13 months faster than the original schedule dictated – and $12 million under the Arizona Department of Transportation’s original estimate, the community embraced the plan.


The work included widening five bridges and reconstructing eight on- and off-ramps in just 274 days. To achieve this remarkable schedule and limit travelers’ headaches, the team developed a number of strategies to speed things along. We divided the project into segments so that the most congested areas could be completed first to relieve traffic backups. Design review was streamlined to package submittals based on sub-segment and project discipline, allowing the team to process 472 design submittals with a (lightning-fast) average review time of 3.2 days. Teamwork was promoted through the formation of task forces that integrated designers with construction staff. Wireless paving and intelligent compaction equipment helped increase efficiency. Our innovations enabled the team to design and build an average of 1.5 lane-miles every week and cut millions of dollars from the original budget.


Arizona Department of Transportation


Loop 101 HOV Lane Addition