Interstate 20 in Louisiana
section of Interstate Highway in Louisiana, United States

Interstate 20 (I-20) is a part of the Interstate Highway System that spans 1,539.38 miles (2,477.39 km) from Reeves County, Texas, to Florence, South Carolina. Within the state of Louisiana, the highway travels 189.84 miles (305.52 km) from the Texas state line west of Greenwood to the Mississippi River, which it crosses into Vicksburg, Mississippi.
I-20 traverses the northern portion of the state, serving the metropolitan areas of Shreveport–Bossier City and Monroe, as well as the smaller cities of Minden and Ruston. It entirely parallels the older U.S. Highway 80 (US 80) corridor through Louisiana. The route is mirrored by I-10, which traverses the southern portion of the state. The two are connected by I-49, the state's major north–south Interstate Highway.
Route description
I-20 enters Louisiana about 20 miles (32 km) east of Marshall, Texas, near Waskom. I-20 passes through Greenwood to the north of town, where US 80/US 79 serve as the main east–west highway. I-20 enters Shreveport about 5 miles (8.0 km) east of Greenwood. I-20 intersects I-220 (the north Shreveport bypass) and Louisiana Highway 3132 (LA 3132, the south Shreveport bypass) on the westside of the city.
“Interstate 20 in Louisiana” enters the record as section of Interstate Highway in Louisiana, United States. Crown Archives preserves that source wording while asking what Interstate, Louisiana and section can confirm, complicate or overturn.
Why this record matters
“Interstate 20 in Louisiana” is worth following because a concise public description often conceals a longer documentary argument. Here, Interstate, Louisiana and section provides the most credible route into that argument.
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 Mar 29, 2026. The linked authority identifier is Q2398959. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Interstate 20 in Louisiana”, its source revision and the description used here.
- Expand the search: follow Interstate 20 in Louisiana primary sources, Interstate 20 in Louisiana archive and Interstate 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 “Interstate 20 in Louisiana”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Interstate 20 in Louisiana” 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.