The speed limit on Interstate 781 East starts out at 65 mph. This is the standard speed limit on most rural Interstate highways in New York. (Photo taken 7/4/15).

Interstate 781 East at mile marker 1. (Photo taken 7/4/15).

Interstate 781 East at mile marker 2. (Photo taken 7/4/15).

Mileage sign on Interstate 781 East. It's 2 miles to the junction of US 11 and 2 1/2 miles to the Main Gate of Fort Drum. (Photo taken 7/4/15).

This sign warns that Interstate 781 ends 1 1/2 miles ahead. Traffic to US 11 must use Exit 4 ahead, as the main lanes of I-781 transition into the main entrance to Fort Drum with no legal turnaround possible. (Photo taken 7/4/15).

Interstate 781 East approaching Exit 4 - 1 mile. (Photo taken 7/4/15).

Approaching Exit 4, the speed limit decreases to 55 mph for all traffic. (Photo taken 7/4/15).

Trucks and convoys to Fort Drum should use US 11 North via Exit 4 ahead. (Photo taken 7/4/15).

1/4 mile mile from the eastern terminus of Interstate 781, the speed limit decreases to 45 mph. (Photo taken 7/4/15).

Interstate 781 East at Exit 4: US 11 - Gouverneur / Canton (Photo taken 7/4/15).

Interstate 781 END shield, visible from the bottom of the ramp for Exit 4. (Photo taken 7/4/15).