Officials began looking into ways to deter such attempts after two people jumped off the bridge in July and a third attempted to do so. Four more jumped between July and September, and a fifth was pulled from the edge of the bridge.
Signs listing a hot line number for mental health services are being installed at 100-foot intervals on both sides of the span.
Transportation spokeswoman Erin Phalon says officials looked in to installing fencing over bridge railings but abandoned the idea because of costs.
