Route description Interstate 787
view past toll barriers @ south end of i-787, looking north @ exit 1.
i-787 officially begins @ toll barrier i-87/thruway exit 23; however, short 0.57-mile (0.92 km) spur between u.s. route 9w (us 9w) , interchange connecting i-787 thruway, designated ny 912s, unsigned reference route, signed i-787. @ east end of interchange (exit 1) i-87, i-787 northbound merges ny 912s, progressing due east short distance before curving northeast ahead of delaware , hudson railway mainline near exit 2 (ny 32). past ny 32, i-787 parallels hudson river heads northward heart of downtown albany, featuring pair of exits us 9 , us 20 @ massive interchange southeast of empire state plaza on west bank of hudson.
north of downtown albany, i-787 interchanges i-90 @ exit 5 prior crossing menands , meeting ny 32 once more @ exit 6 way of trumpet interchange. ramp trumpet ny 32, 0.28-mile (0.45 km) long roadway, designated unsigned ny 913t. farther north in menands, i-787 intersects ny 378 (exit 7) way of near-cloverleaf interchange. in watervliet, i-787 has 1 interchange 23rd street (exit 8) before reaching near-cloverleaf interchange ny 7 , ny 787 (exit 9) in green island. point, i-787 s alignment becomes uncertain.
northern terminus
i-787 shares brief concurrency us 9 between exits 3 and 4.
the northern terminus of i-787 unclear. appendix e of 2008 new york state department of transportation (nysdot) traffic data report places terminus @ 8th street in troy, creating overlap ny 7 across hudson river via collar city bridge. additionally, there shields i-787 on collar city bridge east of hudson river. other sources, including national highway system map of albany published federal highway administration , nysdot s official description of signed routes in new york state, identifies terminus ny 7 / ny 787 interchange near green island. contemporary maps of albany area lack i-787 shields on collar city bridge, signing roadway ny 7.
according nysdot traffic counts, i-787 10.16 miles (16.35 km) long; limiting i-787 section between thruway , ny 7, length reduced 9.55 miles (15.37 km).
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