The bridge is marked for 35mph, but ive even seen school buses disregard this. The bridge is insanely wide, as are individual lanes. It is noted as one of the largest speed traps in Maine, ecspecially during the summer months. Got tagged for 79 in a 35 last year. I admit, I was pulling away from traffic, and definatly in the wrong, but traffic moves at roughly 50mph across the bridge. State cops, Locals, and unmarks alike constantly monitor this bridge.