Connecticut's drawbridges run on clocks: Mystic at :40 past the hour through downtown, East Haddam on the hour, New Haven's three city bridges locked during rush hours. Every movable bridge, verified against CTDOT's inventory — tap any bridge for its rule.
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App Store Google PlayHow it works: the bridge list is cross-checked against CTDOT’s structure inventory (bridges that stopped moving — Congress Street, East Washington Avenue — are excluded). Opening rules come from the US Coast Guard’s Drawbridge Operation Regulations (33 CFR Part 117); Connecticut’s clocks are unusually strict, so the schedule is nearly as good as live status. Also see Seattle, Washington, Oregon, Michigan, New York, Florida, Louisiana, New Jersey, and North Carolina.