 New York State Route 400 | ||||
|---|---|---|---|---|
| Aurora Expressway | ||||
 Map of the Buffalo area with NY 400 highlighted in red | ||||
| Route information | ||||
| Maintained byNYSDOT | ||||
| Length | 16.91 mi[1] (27.21 km) | |||
| Existed | January 1, 1970[2]–present | |||
| Major junctions | ||||
| South end |  NY 16 inAurora | |||
| Major intersections |   US 20A /NY 78 inEast Aurora US 20 /NY 78 at theElma–West Seneca line | |||
| North end |   I-90 /New York Thruway in West Seneca | |||
| Location | ||||
| Country | United States | |||
| State | New York | |||
| Counties | Erie | |||
| Highway system | ||||
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New York State Route 400 (NY 400) is a 16.91-mile (27.21 km)freeway located withinErie County, New York, in the United States. The northwest end is connected to theNew York State Thruway (Interstate 90 or I-90) and the southeast end terminates atNY 16 in the town ofAurora. NY 400, known as theAurora Expressway, roughly parallels NY 16 between the two locations. It is most commonly used to carry traffic from Buffalo to thevillage of East Aurora, whereFisher-Price andMoog, Inc are headquartered. It is a busy commuter route to the southern suburbs. NY 400 is signed as a north–south route, although about half of the route runs more east–west.
The northwest end of NY 400 is in the southern part of Buffalo at the Thruway. The southeast end is north of thehamlet of South Wales, which is located in the town ofWales. At this end, the route connects to Olean Road and continues south as NY 16. The highway crossesCazenovia Creek just before ending.
NY 400 begins northwest of thehamlet of South Wales in the town ofAurora; however, South Wales, situated less than 0.5 miles (0.8 km) southeast of the route's end, is located in the adjacent town ofWales. At its southern end, NY 400 splits off of Olean Road, taking with itNY 16 which occupies Olean Road to the south. The two routes head north-northwest from here as the Aurora Expressway through rural areas in the town of Aurora. After passing byEmery County Park, NY 16 leaves the expressway back onto Olean Road on one of three junctions that only allow access in one cardinal direction, this one to the south as a northbound exit and southbound entrance. NY 400 continues heading in a primarily northward direction; however, it briefly turns back in a slight east direction to avoid thevillage of East Aurora.
Remaining rural, NY 400 crosses just to the east of East Aurora, encounteringU.S. Route 20A (US 20A) andNY 78 (Big Tree Road) at a northbound entrance and southbound exit. North of here, entering the town ofElma, it turns to the west to meet with Maple Street at the final single-direction junction, a northbound entrance and southbound exit. The expressway then turns northwest to intersect with Jamison Road (formerlyNY 422) by way of a fulldiamond interchange. NY 400 also passes a small industrial area containing manufacturing plants forMoog, Inc,Motorola, Servotronics, and Steuben Foods located on Maple Street and Jamison Road.
NY 400 continues northwest, parallelingNY 16 and NY 78 on Seneca Street and becoming more suburban and heavily trafficked. On the Elma–West Seneca town line, a fullcloverleaf interchange occurs withUS 20 and NY 78 on Transit Road, just north of the Seneca Street/Transit Road intersection. The expressway turns in a more western direction here, as well, though there is still a slight deflection to the north.
The expressway continues to parallel NY 16 (Seneca Street), now running between NY 16 to the south and the North America Centerindustrial park to the north. TheNorfolk Southern Railway separates NY 400 from the industrial park. It intersects withNY 277 (Union Road), again just north of the NY 16 (Seneca Street) intersection with the road. After a final exit for NY 16, it encounters theNew York State Thruway (I-90) at the beginning of I-90's eight-lane section throughBuffalo, signifying its high use duringrush hour.
Construction began on the Aurora Expressway in the late 1960s and concluded in the early 1970s.[3] The entirety of the expressway, then incomplete, was designated as NY 400 on January 1, 1970.[2]
The intersection where NY 400 terminates at NY 16 inSouth Wales has been reconfigured over time. When the expressway was first constructed, the flow of traffic along Olean Road was unimpeded while traffic from NY 400 was forced to merge with NY 16 at a sharp angled intersection.[4][failed verification] The junction has since been altered so that southbound traffic on NY 400 continues onto NY 16 south with no merging required while commuters on NY 16 north are guided onto the expressway rather than onto Olean Road. Olean Road, however, is still accessible by way of a four-way intersection with Richardson Road just west of the former junction.[5]
The entire route is inErie County. All exits are unnumbered.
| Location | mi[1] | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Town of Aurora | 0.00 | 0.00 |  NY 16 south / Olean Road (NY 951V north) –Holland,Olean,East Aurora | Southern terminus; southern end of NY 16 concurrency | |
| 1.99 | 3.20 |  NY 16 north / Olean Road (NY 951V south) –East Aurora | Northbound exit and southbound entrance; northern end of NY 16 concurrency; northern terminus of unsigned NY 951V | ||
| 4.05 | 6.52 | US 20A /NY 78 –East Aurora | Southbound exit and northbound entrance | ||
| Elma | 7.12 | 11.46 |  CR 241 (Maple Street) | Southbound exit and northbound entrance | |
| 8.39 | 13.50 |  CR 574 (Jamison Road) –Elma | Former routing ofNY 422 | ||
| Elma–West Seneca line | 11.96 | 19.25 | US 20 /NY 78 (Transit Road) | ||
| West Seneca | 14.98 | 24.11 |  NY 277 (Union Road) | ||
| 16.40 | 26.39 | NY 16 (Seneca Street) –West Seneca | |||
| Buffalo | 16.91 | 27.21 | I-90 /New York Thruway –Buffalo,Erie | Northern terminus; exit 54 on I-90 / Thruway | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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