Connecticut Route 109
State highway in Litchfield County, Connecticut, US
Route 109 is a state highway in western Connecticut, running from New Milford to Thomaston.
Route description
Route 109 begins at an intersection with US 202 in New Milford and heads northeast into Washington, where if overlaps Route 47 for 0.28 miles (0.45 km) before continuing into Morris. In Morris, Route 109 heads east, then northeast and southeast, before cutting across a corner of Litchfield by the Wigwam Reservoir into Thomaston. In Thomaston, Route 109 continues southeast and then east along the Wigwam Reservoir and Branch River to end at an intersection with US 6 and Route 254.
History
In 1922, the Bantam to Morris route was designated as State Highway 310. This became part of Route 109 when it was commissioned in 1932, running from the Bantam section of Litchfield past Bantam Lake to its current eastern terminus in Thomaston. In 1963, the section past Bantam Lake was reassigned to Route 209 and Route 109 was rerouted to its current western terminus using former SR 857. In 1968, the section near the Branch River in Thomaston was rerouted uphill to accommodate a flood control project.
Junction list
The entire route is in Litchfield County.
The public source identifies “Connecticut Route 109” as state highway in Litchfield County, Connecticut, US. This brief keeps that definition visible, then builds a research path around Connecticut, Route and State.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Connecticut Route 109”, the useful work is to connect “state highway in Litchfield County, Connecticut, US” to the records capable of establishing context and consequence.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jul 19, 2026. The linked authority identifier is Q2248033. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1922, 1932, 1963 and 1968.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. 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.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Connecticut Route 109”, its source revision and the description used here.
- Expand the search: follow Connecticut Route 109 primary sources, Connecticut Route 109 archive and Connecticut research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Connecticut Route 109”?
- What physical evidence or contemporary plan supports the description?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Connecticut Route 109” 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.