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
Construction numbers
Length and depth of the culvert underneath I-405: 400 feet long and 60 feet deep
Number of pumps needed to divert Thunder Hills Creek away from the collapsed culvert: 15
Capacity of each pump: 4,000 gallons a minute.
Total capacity of all 15 pumps: 60,000 gallons a minute, or enough to fill an Olympic-size swimming pool every four minutes
Length of pipeline that will carry Thunder Hills Creek while crews are installing the new culvert: 2000 feet