reconstruction included extending merge lanes, replacing and adding lighting, and improving drainage structures. Service roads and the proposed interchange As I-495 was being built across Long Island, it was specifically designed to accommodate certain topographical conditions and proposed interchanges. Exit 30 was originally a partial cloverleaf interchange with the Cross Island Parkway, while eastbound exit 30S was for Easthampton Boulevard with a connecting ramp to the southbound Cross Island Parkway. Exit 31 was originally a westbound only interchange for Douglaston Parkway; it was later combined with the exit for Little Neck Parkway. Exit 39A was intended for the proposed extension of the Wantagh State Parkway near Powell Road in Old Westbury. It was intended to be a full Y interchange with an east-to-southbound-only offramp and a north-to-westbound-only onramp running beneath Powell Road. Exit 40 originally had only same-directional offramps under the expressway providing access to realigned sections of NY 25. When exit 41 was originally constructed, it had no south-to-west connecting ramp. Westbound access to the expressway was provided at the nearby exit 40 onramp at NY 25. An alternate design for exit 42 called for it to be similar to the one proposed for NY 135 and the Bethpage State Parkway, and westbound exit 46 was originally a partial cloverleaf. Exit 47 was never built; it had been intended for the extension of the Bethpage State Parkway near Washington Avenue in Plainview. The site of exit 47 is now a truck inspection site between exits 46 and 48, which opened in 2006. The original right-of-ways for the service roads between exits 48 and 49 were intended to weave around the steep Manetto Hills area of the main road, rather than running parallel to the road as it does today. The land between the service road and the main road was reserved for housing developments. The right-of-way for the original westbound service road still weaves through the development on the north side of the road. Exit 49 was originally a cloverleaf interchange with the outer ramps connecting to the service roads at a point closer to NY 110. This was in preparation for NY 110's formerly proposed upgrade into the Broad Hollow Expressway. After the project was canceled in the 1970s, the west-to-northbound onramp was moved to nearby CR 3 (Pinelawn Road), and the original ramp was replaced with a park and ride. Exit 52 (Commack Road/CR 4) was intended