Construction numbers
Length of old culvert: 400 feet
Length of new culvert: 470 feet
Depth of old culvert: 60 feet
Depth of new culvert: 55 feet
Width of old culvert: 48 inches
Width of new culvert: 51 inches
Capacity of each pump used to divert Thunder Hills Creek: 4,000 gallons a minute.
Length of pipeline that can carry Thunder Hills Creek while crews are installing the new culvert: 2000 feet
Traffic numbers
Average number of vehicles using I-405 daily between SR 167 and SR 169:
- northbound I-405: 70,000
- southbound I-5: 70,000
- Total: 140,000
Average number of vehicles using the northbound SR 167 ramp to northbound I-405 daily: 26,000