The Oddstad Box Culvert is located approximately 2.2 miles upstream of Highway where San Pedro Creek passes under Oddstad Boulevard. The box culvert is constructed by two-segmented 6-foot high by 10-foot wide boxes with a small plunge pool downstream and is approximately 64 feet long. The velocities in the culvert range from 8 feet per second to about 25 feet per second.

The Linda Mar Arch Culvert is located along the mainstem approximately 2 miles upstream of Highway 1 where the creek passes below Linda Mar Boulevard. The 14-foot high arch culvert is approx 62 feet long and 20 feet wide. Velocities range from 8 feet per second to 20 feet per second.

The Adobe Box Culvert is located along the mainstem of the creek approximately 1 mile upstream of Highway 1 where San Pedro Creek passes below Adobe Road. The four-sided concrete box culvert is 8 feet high by 8 feet wide by 50 feet long with a peak velocity of 30 feet per second.