The northern tube, carrying westbound traffic to New Jersey, is fed from four ramps. The first ramp originates from the intersection of 30th Street and Dyer Avenue, and leads to the northbound Lincoln Tunnel Expressway. This ramp carries traffic from both northbound Tenth Avenue and southbound Ninth Avenue. The second ramp diverges from eastbound 33rd Street and merges directly into the northbound expressway. The third ramp leads from the segment of Dyer Avenue that runs between 34th Street and 36th Street. This ramp carries traffic only from westbound 34th Street, but also contains interchanges with westbound 35th Street and both directions of 36th Street. The third ramp then merges with the expressway, which descends into a short tunnel until 10th Avenue and 40th Street. At this point, the highway surfaces and there is an option to exit on the left, to westbound 39th Street. This is marked as the last exit in New York. The fourth ramp merges with highway traffic at this point, carrying traffic from the intersection of 40th Street and Galvin Avenue. Traffic traveling eastbound on 40th Street is forced to enter this ramp, while westbound traffic on 40th Street and southbound traffic on Galvin Avenue have the option to either enter the ramp or continue on 40th Street. After the fourth ramp merges into the westbound expressway, the roadway dips into the northern tube just east of Eleventh Avenue.
The northern tube, carrying westbound traffic to New Jersey, is fed from four ramps. The first ramp originates from the intersection of 30th Street and Dyer Avenue, and leads to the northbound Lincoln Tunnel Expressway. This ramp carries traffic from both northbound Tenth Avenue and southbound Ninth Avenue. The second ramp diverges from eastbound 33rd Street and merges directly into the northbound expressway. The third ramp leads from the segment of Dyer Avenue that runs between 34th Street and 36th Street. This ramp carries traffic only from westbound 34th Street, but also contains interchanges with westbound 35th Street and both directions of 36th Street. The third ramp then merges with the expressway, which descends into a short tunnel until 10th Avenue and 40th Street. At this point, the highway surfaces and there is an option to exit on the left, to westbound 39th Street. This is marked as the last exit in New York. The fourth ramp merges with highway traffic at this point, carrying traffic from the intersection of 40th Street and Galvin Avenue. Traffic traveling eastbound on 40th Str.eet is forced to enter this ramp, while westbound traffic on 40th Street and southbound traffic on Galvin Avenue have the option to either enter the ramp or continue on 40th Street. After the fourth ramp merges into the westbound expressway, the roa.dway dips into the northern tube just east of Eleventh Avenue.