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 Route 3 | ||||
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| Route information | ||||
| Maintained byCTDOT | ||||
| Length | 14.45 mi (23.26 km) | |||
| Existed | 1941 (extended 1991)–present | |||
| Major junctions | ||||
| South end |  Route 66 inMiddletown | |||
| Major intersections |  Route 372 inCromwell I-91 inWethersfield | |||
| North end |  Route 2 inGlastonbury | |||
| Location | ||||
| Country | United States | |||
| State | Connecticut | |||
| Counties | Middlesex,Hartford | |||
| Highway system | ||||
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Route 3 is a 14.45-mile-long (23.26 km) route connectingMiddletown toGlastonbury. It passes through the towns of Cromwell, Rocky Hill, and Wethersfield. The northernmost 3 miles (4.8 km) of Route 3 is afreeway that was originally intended for the cancelledInterstate 491.
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Route 3 begins atRoute 66 in Middletown, and is a surface road for its first 11 miles (18 km) up toWethersfield. After crossing intoCromwell, it intersectsRoute 372, which offers access toRoute 9 just east of the intersection. After overpassing Route 9, it continues north intoRocky Hill and overpasses Interstate 91 without an interchange. After a brief concurrency withRoute 160, it crosses into Wethersfield, where it meets the eastern end ofRoute 287 and crosses overRoute 99. After the Silas Deane Highway (Route 99) intersection, it becomes a four-lane undividedexpressway. At an interchange with Interstate 91, it becomes a four-lane dividedfreeway crosses theConnecticut River on theWilliam H. Putnam Memorial Bridge intoGlastonbury. The freeway has one exit for Main Street (via Glastonbury Boulevard northbound and Putnam Boulevard southbound) before ending at a trumpet interchange with theRoute 2 expressway at theEast Hartford town line.
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Route 3 was established in 1941. It originally ran from West Street/Berlin Road inCromwell, which was part ofRoute 72 at the time (nowRoute 372), to theSilas Deane Highway (Route 99) inWethersfield.
 Interstate 491 | |
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| Location | Hartford, Connecticut |
| Existed | 1958–1973 |
In late 1958, as part of the plannedInterstate 491 (a southeastern bypass ofHartford), a freeway from I-91 to Main Street in Glastonbury, crossing theConnecticut River on thePutnam Memorial Bridge, was opened. The Route 3 designation was temporarily extended along this freeway pending completion of I-491. In 1973, I-491 was cancelled due to local opposition and the Route 3 designation along this freeway segment became permanent. In the late 1980s, the freeway was extended so that it terminated at Route 2, rather than at Main Street.
In 1991, when the Route 9 freeway through Berlin and New Britain was completed, Route 72 was truncated to end at Route 9 in New Britain. The east–west portion of the old alignment of Route 72 was reassigned to an extended Route 372 (running along Berlin Road/West Street to end at Route 99 in Cromwell). The north–south portion of old Route 72 from Cromwell to Middletown (ending atRoute 66) was reassigned to Route 3.
As part of an upcoming sign replacement project on Route 3 between I-91 and Route 2, new mile-based exit numbers will be added along that stretch of expressway.
| County | Location | mi | km | Exit | Destinations | Notes |
|---|---|---|---|---|---|---|
| Middlesex | Middletown | 0.00 | 0.00 | Route 66 –Middletown,Portland,Meriden | Southern terminus | |
| Cromwell | 3.05 | 4.91 |   ToRoute 372 west –Berlin,New Britain | Access viaSR 524 | ||
| 3.37 | 5.42 |   Route 372 toI-91 /Route 9 –Middletown,Cromwell,Hartford,Berlin,New Britain | ||||
| Hartford | Rocky Hill | 6.59 | 10.61 | ToI-91 –Hartford,New Haven,Dinosaur State Park | Access viaSSR 411 | |
| 7.21 | 11.60 |   Route 160 east –Rocky Hill | Southern end of Route 160 concurrency | |||
| 7.40 | 11.91 | Route 160 west –Berlin | Northern end of Route 160 concurrency | |||
| Wethersfield | 10.21 | 16.43 |  Route 287 west –Newington | Eastern terminus of Route 287 | ||
| 10.37 | 16.69 |  Route 99 –Hartford,Rocky Hill | FormerRoute 9 | |||
| 10.55 | 16.98 | Southern end of limited-access section | ||||
| 11.31 | 18.20 | 11 | I-91 –Hartford,New Haven | Signed as exits 11A (I-91 south) and 11B (I-91 north) southbound; exits 33A and 33B on I-91 | ||
| Connecticut River | 11.63– 12.09 | 18.72– 19.46 | Putnam Bridge | |||
| Glastonbury | 12.96 | 20.86 | 13A | To Main Street –Glastonbury | Northbound exit and entrance; access via Glastonbury Boulevard | |
| 13.26 | 21.34 | 13 | Southbound exit and entrance; access via Putnam Boulevard | |||
| 14.45 | 23.26 | Route 2 –East Hartford,Norwich | Eastern terminus; signed as exits 13B (Route 2 west) and 13C (Route 2 east); exit 4A on Route 2 | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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