Connecticut Route 80
State highway in south-central Connecticut, US
Connecticut Route 80 is a 25.9 mile highway that runs through south-central Connecticut. The route runs from Interstate 91 (I-91) in Quinnipiac Meadows neighborhood of New Haven east to Route 154 in Deep River. Route 80 runs within 5 miles of many town squares- including Downtown New Haven.
Route description
Route 80 begins at the junction of I-91 and Route 17 in New Haven (at exit 8). Route 17 splits off and heads northward right after the exit. Route 80 begins as a 4-lane principal arterial road in New Haven, continuing due east for almost its entire length. It has a junction with the southern end of Route 103 before entering East Haven. It then passes the north end of Route 100 before crossing into North Branford. In North Branford, it has a 1.50 miles (2.41 km) overlap with Route 22, during which it meets the north end of Route 139. Just east of the Route 22 concurrency, Route 80 becomes a 2 lane minor rural arterial road and enters Guilford.
Begin with the source’s own compact description: “Connecticut Route 80” is state highway in south-central Connecticut, US. The dossier treats that line as a proposition to test through Connecticut, Route and State, not as a finished interpretation.
Why this record matters
The phrase “state highway in south-central Connecticut, US” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 10, 2026. The linked authority identifier is Q2245431. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Questions for further research
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This entry incorporates text from “Connecticut Route 80” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.