Transportation in New York City City and Fort Lee, New Jersey, is the world's busiest bridge in terms of vehicular traffic. New York has historically been a pioneer in tunnel construction. Most carry rail lines, but there are four exceptions. The Lincoln Tunnel, which carries 120,000 vehicles per day under the Hudson River between New Jersey and Manhattan, is the world's busiest vehicular tunnel. The Holland Tunnel, also under the Hudson River, was the first mechanically ventilated vehicular tunnel in the world and is considered a National Civil Engineering Landmark by the American Society of Civil Engineers. Two other notable tunnels connect Manhattan to other
New York and New Jersey campaign that took place in and around those locations. The Princeton Battlefield and Washington's Crossing are National Historic Landmarks, with state parks also preserving all or part of the locations where events of this campaign occurred in those areas. Morristown National Historical Park preserves locations occupied by the Continental Army during the winter months at the end of the campaign. New York and New Jersey campaign The New York and New Jersey campaign was a series of battles in 1776 and the winter months of 1777 for control of New York City and the state of New Jersey during the American