Blue Line (TRAX)
light rail line in Salt Lake County, Utah, United States
The Blue Line is a light rail line on the TRAX system in the Salt Lake Valley of Utah, in the United States, operated by the Utah Transit Authority (UTA). It is the first line of the TRAX system completed. The line opened on December 4, 1999, one year ahead of schedule after two years of construction. In addition to Salt Lake City, it also serves the communities of South Salt Lake, Murray, Midvale, Sandy and Draper. The line was known as the North/South Line or the Sandy/Salt Lake Line until color names were adopted for each TRAX line in August 2011. An extension of the line to Draper began service on August 18, 2013.
As of 2019, the Utah Transit Authority has begun restoring the Siemens SD 100 and 160s that run on the line. The first restored unit was placed into service on April 8, 2019.
Route
The TRAX Blue Line is designated as UTA Route 701. The right of way used by the Blue Line is one of the oldest in the state of Utah.
This brief starts where responsible research should: with the source description of “Blue Line (TRAX)” as light rail line in Salt Lake County, Utah, United States. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as light rail line in Salt Lake County, Utah, United States. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Aug 6, 2026. The linked authority identifier is Q4929373. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1999, 2011, 2013 and 2019.
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 “Blue Line (TRAX)”, its source revision and the description used here.
- Expand the search: follow Blue Line (TRAX) primary sources, Blue Line (TRAX) archive and Blue 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 “Blue Line (TRAX)”?
- Which earlier names or jurisdictions may reveal additional records?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Blue Line (TRAX)” 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.