
The Robert Moses Causeway, originally known as the Captree Causeway connects the Southern State Parkway with Fire Island and Robert Moses State Park. The original causeways were built as a two lane undivided highway; the northern causeway was twinned in 1967. The southern causeway to Fire Island was planned to be twinned as well, but this was never done.
Mile | Southbound | Northbound | Notes |
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Suffolk County | |||
Speed Limit 55 | |||
0.0 | ![]() |
![]() New York |
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0.0 | ![]() East Islip |
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0.7 | Exit RM1 W![]() New York |
Exit RM1 W![]() New York All trucks buses trailers exit |
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0.7 | Exit RM1 E![]() Montauk |
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2.8 | Exit RM2 W![]() Babylon |
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2.8 | Exit RM2 E![]() Bay Shore |
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Speed Limit 55 | |||
Speed Limit 45 | Speed Limit 55 Minimum 40 |
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Speed Limit 45 | |||
6.7 | Captree Island | ||
6.8 | Drawbridge | ||
Speed Limit 35 | |||
7.0 | ![]() Jones Beach |
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7.0 | ![]() Captree State Park |
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Speed Limit 25 | Speed Limit 35 | ||
8.1 | Robert Moses State Park | ![]() |
Roundabout |
Speed Limit 25 | |||
Suffolk County |