Connecticut Route 15

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Route 15

Route information
Maintained by CTDOT
Length83.53 mi[1] (134.43 km)
Existed1932[2] (relocated 1948)–present
RestrictionsNo commercial vehicles south of exit 67S[3]
Major junctions
South end Hutchinson River Parkway at the New York state line in Greenwich
Major intersections
North end I-84 / US 6 in East Hartford
CountryUnited States
CountiesFairfield, New Haven, Hartford
Highway system
  • Connecticut State Highway System
Route 14 Route 16

Route 15 is a state highway in the U.S. state of Connecticut that runs 83.53 miles (134.43 km) from a connection with New York's Hutchinson River Parkway in Greenwich, Connecticut, to its northern terminus intersecting with Interstate 84 (I-84) in East Hartford, Connecticut. Route 15 consists of four distinct sections: the Merritt Parkway, the Wilbur Cross Parkway, the Berlin Turnpike, and part of the Wilbur Cross Highway. The unified designation was applied to these separate highways in 1948 to provide a continuous through route from New York to Massachusetts. The parkway section of Route 15 is often referred to locally as "The Merritt".

Route description

Merritt Parkway

Signage at the state line in Greenwich

Route 15 begins at the New York border, where the Hutchinson River Parkway continues southwest towards New York City, at the New York State Route 120A interchange in the village of Rye Brook, in the town of Rye, New York. The highway comes into the state of Connecticut, continuing as the Merritt Parkway, a four-lane controlled-access parkway with low bridges, sharp curves, and a tree-filled median, that passes through the affluent urbanized areas of southern Fairfield County. Commercial vehicles are prohibited on this section of Route 15. The parkway heads into the town of Greenwich, where it passes a service plaza in both directions and curves north-northwest, before heading northeast and meeting interchanges at Round Hill Road, providing access to Downtown Greenwich, and at Lake Avenue. From there, Route 15 turns northeast, and curves through its interchange with North Street, which provides another outlet into Downtown Greenwich. Past this interchange, the parkway enters the city of Stamford, where it crosses over the Mianus River within the Mianus River State Park, before reaching an interchange with Route 104 in the residential areas of North Stamford, providing access to Downtown Stamford and the University of Connecticut Stamford Campus. Route 15 continues to an interchange with Route 137 before the route leaves Stamford.[4]

The parkway comes into the town of New Canaan, where it crosses the Noroton River within its interchange with Route 106, adjacent to the Talmadge Hill station on the New Canaan Branch of the Metro-North Railroad's New Haven Line, located to the southeast of the interchange. Afterwards, Route 15 passes under the New Canaan Branch and curves around to meet an interchange for Route 124 before reaching the New Canaan Service Plaza. After crossing the Fivemile River, the parkway enters the city of Norwalk and immediately comes to an interchange with Route 123, which provides access to the Norwalk Community College. Just past its crossing of the Silvermine River, Route 15 meets the U.S. Route 7 (US 7) freeway at an incomplete interchange before it crosses over the Danbury Branch of the New Haven Line just south of the Merritt 7 station, and the Norwalk River and comes to a cloverleaf interchange with Main Avenue which provides the missing movements between the parkway and US 7. From there, Route 15 continues northeast through residential areas in the neighborhood of Cranbury before it leaves Norwalk, after crossing over Route 53 without an interchange.[4]

Traveling Merritt Parkway south Route 58 Black Rock Turnpike at Exit 44 in Fairfield

The parkway enters the town of Westport, where it crosses over the Saugatuck River, and comes to right-in/right-out interchanges with Route 33, just east of the town line. Route 15 turns to the northeast again, upon reaching its interchange with Route 57, that has a park and ride lot serving the town of Westport in its northwest corner. Immediately after this interchange, the parkway crosses over Route 136 with no access and enters its longest stretch without exits, where it passes more wooded residential areas and comes into the town of Fairfield, where it meets its next interchange, five and a half miles later, at Route 58, which also has a park and ride lot, located in its southeastern corner. Route 58 provides access to both Fairfield Center and the campus of Fairfield University. Route 15 crosses the Mill River, passes service plazas in both directions, and then meets Route 59 at a pair of right-in/right-out interchanges. Route 59 provides access to the headquarters of General Electric. The parkway turns east-northeast and enters the town of Trumbull at its interchange with Park Avenue, which provides access to the campus of Sacred Heart University just to the southwest of the road, as well as the campus of the University of Bridgeport in the adjacent city of Bridgeport. Route 15 then reaches a single-point urban interchange with Route 111, adjacent to the Westfield Trumbull shopping mall, in its southwestern corner. The parkway meets the Route 25 freeway at an incomplete turbine interchange, which provides access to the Beardsley Zoo in Bridgeport, and the route crosses the Pequonnock River within the interchange. Past Route 25, Route 15 reaches a southbound exit and northbound entrance for Route 127 and then a full interchange for Route 108, in tandem with stack interchange with the Route 8 freeway.[4]

Route 15 comes into the town of Stratford through more wooded suburban areas, and reaches an interchange with Route 110 at the northeastern edge of town. Past this interchange, the parkway runs due east to cross the Igor Sikorsky Memorial Bridge over the Housatonic River where it leaves both Stratford and Fairfield County. Route 15 enters both Milford and New Haven County, coming to a modified trumpet interchange with the Milford Parkway which provides access to both the I-95 freeway and US 1, north of Downtown Milford. At this point, the Merritt Parkway ends and Route 15 turns northeast again through the wooded residential areas of southwestern New Haven County.[4]

Wilbur Cross Parkway

The next component of Route 15, the Wilbur Cross Parkway, begins at the Milford Parkway junction. The Wilbur Cross Parkway follows the same general configuration and landscape as the Merritt Parkway, continues with the Merritt Parkway's exit numbers, and excludes commercial vehicles from its use, too. A few miles after the Milford Parkway, Route 15 comes into the town of Orange, where it passes a bi-directional service plaza, and meets Route 121 at a pair of right-in/right-out ramps, which provides access to the Orange campus of the University of New Haven. Now running north-northeast, Route 15 continues to a cloverleaf interchange with Route 34 which provides access eastbound to the Yale Bowl, in the city of New Haven. The parkway crosses the Wepawaug River, where it turns northeast and enters the town of Woodbridge, passing under Route 114 without access. Route 15 again crosses a boundary and comes into New Haven, where it meets an interchange with Route 69/Route 63 that provides access to the campus of Southern Connecticut State University, in the neighborhood of Amity, crossing the West River within the interchange.[4]

Traveling Wilbur Cross Parkway north toward Exit 59 and the West Rock Tunnel, dubbed "Heroes Tunnel" by the Connecticut legislature in 2003

From here, the parkway briefly crosses back through the southeastern corner of Woodbridge, before coming back into New Haven, and entering Heroes Tunnel which passes under West Rock Ridge. Immediately after exiting the tunnel, Route 15 comes into the town of Hamden, where it heads into a mix of residential and commercial areas around its interchange with Route 10. The parkway then enters the town of North Haven, where it crosses the Mill River and passes under the Route 40 freeway as the only freeway crossing in the state without an interchange, over East Rock. A short distance later, the parkway meets an interchange with Route 22 and continues northeast to the last pair of service plazas on the route. Past the plazas, Route 15 turns north-northeast along the western edge of the Quinnipiac River State Park, where the route enters the town of Wallingford. In Wallingford, the parkway has exits to Quinnipiac Street providing access to Gaylord Specialty Healthcare and the Wallingford station on Amtrak and ConnDOT's Hartford Line, as well as Route 150 that provides access to the Masonicare Health Center. Route 15 crosses the Quinnipiac River and turns northeast, where it comes to an interchange for US 5, where it also crosses the Hartford Line.[4]

Route 15 continues northeast into the city of Meriden and passes entrances to the ConnDOT maintenance facilities. The parkway continues a short distance before reaching an interchange complex on the east side of town. First, Route 15 crosses over the I-91 freeway, where it turns north to reach a southbound exit and northbound entrance, before meeting East Main Street, which provides access to the Wesleyan University campus, where the Interstate Highway begins to run inside the median. The parkway widens to six lanes through here, then reaches the next exits for northbound I-91 with a northbound exit and southbound entrance, as well as a northbound exit and southbound entrance to and from the westbound direction of the I-691 freeway, where there is also access from westbound I-691 to the northbound Wilbur Cross Parkway. Past I-691, Route 15 narrows back to four lanes, and turns north-northwest before heading north-northeast again, where the Wilbur Cross Parkway ends and northbound US 5 merges with northbound Route 15 to head toward the suburban areas of Greater Hartford.[4]

Berlin Turnpike

Berlin Turnpike

Route 15 continues onto a four-lane divided surface highway concurrent with US 5, known as the Berlin Turnpike, running between Silver Lake to the west and Lamentation Mountain to the east. Here, it passes along a commercial strip before passing areas of residence. The highway enters the town of Berlin and Hartford County, and briefly forms the western edge of Lamentation Mountain State Park, before heading back into commercial areas. An old alignment of the Berlin Turnpike, splits to the west, while US 5/Route 15 curve to their interchange with the Route 9 freeway and Route 372, in which all access besides the ramps from US 5/Route 15 to southbound Route 9 and from southbound Route 9 to US 5/Route 15 is made via Route 372. North of Route 9, the old alignment of the Berlin Turnpike rejoins the new road briefly, before splitting again, this time to the east. The highway crosses the Mattabesset River before intersecting the western terminus of Route 160. US 5/Route 15 passes rows of shopping centers, as it comes into the town of Newington, intersecting the southern terminus of Route 173, which heads north towards the town of West Hartford. The highway continues to its junction with the southern terminus of Route 176, which heads north towards the center of Newington. A park and ride lot is located in the northeastern corner of this intersection, with Griswoldville Avenue. From here, US 5/Route 15 passes the ConnDOT headquarters on the east, prior to reaching the intersections with Route 287. The highway leaves Newington at its interchange with Route 175, which heads west towards the center of town and east towards the town of Wethersfield.[4]

After the Route 175 interchange, US 5/Route 15 enters Wethersfield and passes more commercial areas before reaching the partial interchange with Route 314. The Berlin Turnpike splits and continues north-northeast along Route 314, narrowing to a two-lane undivided road, until it reaches the Hartford city line, continuing into that city as Maple Avenue. US 5/Route 15 exits onto a four-lane freeway that heads northeast towards I-91 as a controlled-access outlet into Hartford.[4]

Wilbur Cross Highway

Past Route 314, US 5/Route 15 continue onto the Wilbur Cross Highway, a four-lane freeway with a jersey barrier in the middle. The highway passes through wooded urbanized areas, to the southeast of the Connecticut Department of Labor headquarters, before it comes to an interchange with the northern terminus of Route 99, in which the overpass that carries the two routes over that route and the Providence and Worcester Railroad's Connecticut Valley Railroad line is called the Clinton "Jiggs" Hughes Memorial Bridge. Next, US 5/Route 15 comes into Hartford, turns north-northeast at an interchange with I-91, where there are ramps from northbound and southbound US 5/Route 15 to southbound I-91, and from northbound I-91 to northbound I-91 to southbound US 5/Route 15. The next interchange at Brainard Road/Airport Road with access to Hartford-Brainard Airport, has no southbound exit. The highway continues through industrial areas and comes exits from the southbound Wilbur Cross Highway to Southbound I-91, as well as an exit from the northbound Wilbur Cross Highway and northbound I-91 that also provides access to westbound I-84.[4]

Route 15 southbound at the Route 5 and I-91 exit in Hartford

From here, US 5/Route 15 cross over the Connecticut River on the Charter Oak Bridge, where the routes enter the town of East Hartford. On the other side of the bridge, there is an interchange serving Route 2, where northbound US 5 splits and exits Route 15 onto Main Street, which runs north through the center of East Hartford. Route 15 curves to a northbound exit and southbound entrance with Silver Lane, before the highway reaches its northern terminus and merges onto eastbound I-84 and US 6. A dedicated connection also exists between Route 15 and I-84/US 6's high-occupancy vehicle lanes. The Wilbur Cross Highway continues northeast along I-84 towards Interstate 90/Massachusetts Turnpike in Sturbridge, Massachusetts.[3][4][5]


The Route 15 designation was created as part of the 1932 state highway renumbering and originally ran from New Haven through Middletown, East Hartford and Stafford Springs to the Massachusetts state line in Union.[2] The original route used the pre-expressway alignment of modern Route 17 to Glastonbury, Main Street to East Hartford center, U.S. Route 5 to the junction with Route 30, then modern Route 30 to Stafford, then modern Route 190 to Union, and modern Route 171 to the Massachusetts state line.[6]

In 1943, a newly constructed two-lane highway (now the Wilbur Cross Highway) between Tolland and Union was opened to traffic. Route 15 was relocated on this new highway and the former Route 15 between Route 74 and Route 190 (then part of Route 20) was redesignated as Route 30. By 1948, the rest of the old two-lane Wilbur Cross Highway to East Hartford had also opened, connecting to the Charter Oak Bridge and the Hartford Bypass. In 1948, the State Highway Department decided to relocate Route 15 to a series of roadways, namely the Merritt Parkway, Wilbur Cross Parkway, Berlin Turnpike, Hartford Bypass, Charter Oak Bridge, and the new Wilbur Cross Highway, creating a modern, high-speed throughway from the New York state line to the Massachusetts state line. The Route 15 designation was applied to the previously unnumbered parkways from Greenwich to Meriden, then overlaid with U.S. Route 5 through East Hartford, then designated on the southern half of the Wilbur Cross Highway to Tolland, connecting with the portion previously designated as Route 15 five years before. The former Route 15 between South Windsor and Tolland was reassigned as an extension of Route 30, and the former Route 15 between New Haven and Glastonbury became redesignated as Route 17.[6][7]

In 1948, a portion of the Wilbur Cross Parkway between Route 34 and Whitney Avenue had still been under construction. Route 15 was temporarily routed along Route 34, Sherman Avenue (former Routes 5 and 10), Henry Street/Munson Street/Hillside Place/Edwards Street (former Route 5), and Whitney Avenue (former Route 10A). By 1949, the Wilbur Cross Parkway was completed and the temporary Route 15 designation was removed from the surface streets. Further improvements in the Wilbur Cross Highway took place over the next several years and the road became a four-lane divided highway by 1954. In 1968, most of the Wilbur Cross Highway was designated as I-86 and further upgrades to the road were implemented. Route 15 and I-86 overlapped from the current 15/84 junction in East Hartford to the Massachusetts state line. In 1984, the overlap was removed, truncating Route 15 to its current northern end, while at the same time I-86 was redesignated as I-84.[7]

Exit list

Exits are currently sequential, but are planned to be converted to mileage-based exit numbering in 2025.

CountyLocationmi[1]kmOld exitNew exitDestinationsNotes
Hutchinson River Parkway south – New York City
Southern terminus; continuation into New York
NY 120A north (King Street) – Armonk, NY
[8] Access to NY 120A south via Hutchinson Parkway exit 19A
3.395.46283Round Hill RoadTo Greenwich Business District
4.166.69294Lake Avenue
30-Butternut Hollow RoadAt-grade intersection; intersection closed 1955[9]
5.719.19315North StreetTo Greenwich Business District
Stamford8.8914.31338Den RoadRight-in/right-out interchange
9.2214.84349 Route 104 (Long Ridge Road)To Downtown Stamford and University of Connecticut Stamford Campus
10.4016.743510 Route 137 (High Ridge Road)
New Canaan13.1521.163613 Route 106 (Old Stamford Road)
3714 Route 124 – New Canaan, Darien
Norwalk16.0125.773815 Route 123 (New Canaan Avenue)To Norwalk Community College
3916-17A US 7 – Norwalk, DanburyNorthbound exit and southbound entrance; signed as exits 39A (16) (south) and 39B (17A) (north); redesign in proposal stage[10]
Main Avenue to US 7 – Norwalk, Danbury
Signed as exits 40A (17B) (south) and 40B (17C) (north) (northbound); will be signed as exits 17B (north) and 17A (south) southbound; no northbound signage for US 7
Westport20.7333.364120 Route 33 – Westport, Wilton
21.5934.754221 Route 57 – Westport, Weston
Fairfield26.9543.374427 Route 58 – Fairfield, ReddingTo Fairfield Business District and Fairfield University
28.5846.004628 Route 59 – Fairfield, EastonTo General Electric Headquarters
Trumbull29.3147.174729Park AvenueTo University of Bridgeport and Sacred Heart University
30.3748.884830 Route 111 (Main Street)Single-point urban interchange
4931-32/32A Route 25 – Bridgeport, DanburySigned as exits 49S (31) (south) and 49N (32) (north) northbound; no southbound access to Route 25 south; exits 5A-B on Route 25
32.9953.095032B Route 127 – TrumbullSouthbound exit and northbound entrance
33.5153.935133 Route 108 (Nichols Avenue)Northbound exit and southbound entrance
5234 Route 8 / Route 108 – Bridgeport, WaterburyNo northbound access to Route 8 south/Route 108; exits 5-6 on Route 8
Stratford36.5458.815336 Route 110 – Stratford, Shelton
Housatonic River37.5360.40Igor I. Sikorsky Memorial Bridge
New HavenMilford37.6760.625437

To I-95 / US 1 – Milford, New London
Access via Milford Parkway
Transition between Merritt and Wilbur Cross Parkways
5538AWheelers Farms RoadSigned as exit 55 (38) southbound
5538BWolf Harbor RoadNorthbound exit only
Orange41.3266.505641 Route 121 – Orange
57-5842 Route 34 – New Haven, DerbyCloverleaf interchange; signed as exits 57 (42A) (east) and 58 (42B) (west)
New Haven46.57–
5946 Route 69 / Route 63 – New Haven, Woodbridge
Heroes Tunnel (formerly West Rock Tunnel)
Hamden50.0080.476050 Route 10 – Hamden, New HavenNo northbound signage for New Haven
51.7283.246151Whitney Avenue – Hamden, New HavenSigned as exits 61 (51) (south) and 62 (52) (north) southbound
6252Dixwell AvenueNorthbound exit and entrance
North Haven53.4586.026353 Route 22 – North Haven
Wallingford58.1793.626458AWallingfordAccess via South Turnpike Road / Quinnipiac Street
58.5594.236558B Route 150 – Yalesville
6661 US 5 – Wallingford, Meriden
Meriden63.02101.4262ConnDOT Maintenance FacilityAlso serves Miller Avenue
I-91 south – New Haven, New York City
Southbound exit and northbound entrance; exit 17 on I-91 north; commercial vehicles must exit here
64.33103.5367W64BEast Main StreetSigned as exit 67 (64A) northbound

I-91 north / I-691 west / Route 66 east – Hartford, Middletown, Meriden, Waterbury
Northbound exit and southbound entrance; signed as exits 68N (north), 68E (68B) (east) and 68W (65) (west); exit 17 on I-91 south; exits 1B-C on I-691
66.89107.65Northern end of freeway section; transition between Wilbur Cross Parkway and Berlin Turnpike

US 5 south (North Broad Street) to I-691 / Route 66
Interchange; southern terminus of US 5 concurrency; southbound exit and northbound entrance
Route 9 / Route 372 – Middletown, New Britain, East BerlinInterchange; exits 31-32 on Route 9; southbound access to Route 372 via Worthington Ridge Road (SR 572)
Route 160 east – Rocky Hill
Western terminus of Route 160
Route 173 north – West Hartford
Southern terminus of Route 173
Route 176 north – Newington
Southern terminus of Route 176
Route 287 west – Newington
Western terminus of Route 287 concurrency
Route 287 east – Wethersfield
Eastern terminus of Route 287 concurrency
Wethersfield76.87123.71 Route 175 – Newington, New Britain, WethersfieldInterchange
Route 314 east (Berlin Turnpike) to Maple Avenue
Interchange; north end of Berlin Turnpike overlap; northbound exit and southbound entrance
Southern end of freeway section; transition between Berlin Turnpike and Wilbur Cross Highway
Route 99 south – Wethersfield, Rocky Hill

I-91 / Brainard Road / Airport Road to I-84 west – New Haven, New York City, Springfield
Signed as exits 86 (I-91 south), 87 (Brainard) and 89 (I-91 north); no southbound access to I-91 north; exits 35B-36 on I-91
Connecticut River81.90131.81Charter Oak Bridge
East Hartford81.95131.8990
US 5 north (Main Street) / Route 2 / East River Drive – Norwich
Northern terminus of US 5 concurrency; no southbound signage for Route 2
82.74133.1691Silver Lane (SR 502)Northbound exit and southbound entrance

I-84 east / US 6 east (Wilbur Cross Highway) – Boston
Northern terminus; exit 57 on I-84
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b State of Connecticut Department of Transportation (2012). "2012 Traffic Volumes, State Maintained Highway Network" (PDF). Retrieved January 27, 2020.
  2. ^ a b "Road Conditions in Connecticut". The Hartford Daily Courant. May 27, 1932. p. 14. Retrieved December 24, 2019 – via
  3. ^ a b Connecticut Department of Motor Vehicles: Registering a Pick-up Truck with Passenger Plates (archived from original article)
  4. ^ a b c d e f g h i j k Google (April 19, 2020). "overview of Connecticut Route 15" (Map). Google Maps. Google. Retrieved April 19, 2020.
  5. ^ "Connecticut State Highway Log (2006)" (PDF). Archived from the original (PDF) on September 27, 2011. Retrieved May 8, 2008.
  6. ^ a b - Route 15
  7. ^ a b Larry Larned, "Route 15: The Road to Hartford", (Arcadia Publishing, 2002)
  8. ^ "Hutchinson River Parkway Guide Signs, Bruckner Interchange to Connecticut Line, S.H. Various, Bronx, Westchester Counties, Contract D264231". New York State Department of Transportation. January 31, 2020. Retrieved July 11, 2021.
  9. ^ "Crossover to be Closed". The Daily Item. Port Chester, New York. November 16, 1955. p. 6. Retrieved May 9, 2021 – via
  10. ^ "Route 7/15 Norwalk Project". Archived from the original on March 28, 2019. Retrieved May 22, 2019.

External links