Problem 3: Basic Freeway Sections
Figure 2 contains an aerial photograph of the I-787 interchange. You can see the three loop ramps, the four right-hand ramps, and the semi-direct ramp leading from Rte 7 westbound to I-787 southbound. You can also see the auxiliary lane on the south side of eastbound lanes that starts with the right-hand ramps extends through the two loop ramps and then reunites with the eastbound lanes just east of the east-to-north loop ramp. The short northbound weaving section under the Rte 7 bridges is plainly apparent as is the tight radius that is part of the right-hand ramp leading from Rte 7 eastbound to I-787 southbound.
Figure 2. Aerial Photograph of the I-787 Interchange