If you're driving through New Brunswick, take 10 minutes to take one of the exits off of the Trans-Canada Hwy, either on the east or west side of the St. John River, to drive across the Hartland Covered Bridge. Bear in mind that there are height and weight restrictions, ie. 13' 9", and 10 tonnes.
There's no charge for crossing the bridge.
Foster Road, Hartland, Canada
The Trans-Canada Highway (Route #2) passes over the Hugh John Flemming Bridge, as you cross over the St. John River.
There's no toll to cross this bridge.