Iron Bridge Boat Ramp is a large concrete ramp with good parking located 1 mile east of Columbia on Iron Bridge Road, suitable for motorized boats, canoes, and kayaks.

The access point sits in slackwater at the site of an abandoned Columbia Dam, making it ideal for paddling upstream and downstream exploration at low to medium water levels.

**Critical warning:** Do not paddle downstream beyond the first set of bridges, as a hazardous low-head dam is located 3. 5 miles downstream—attempting to paddle over it will likely result in death.