Lewis and Clark Memorial Bridge
bridge in United States of America
The Lewis and Clark Memorial Bridge in the US state of South Dakota is a bridge that carries Interstate 90 (I-90) across the Missouri River and Lake Francis Case between Chamberlain on the east bank and Oacoma on the west bank of the river. Construction on the bridge began in 1967 and cost $8 million. It was dedicated on July 7, 1974, and was opened to traffic in August.
A historical marker, located at the Lewis and Clark Interpretive Center in Chamberlain-Oacoma, South Dakota, overlooks the bridge.
This brief starts where responsible research should: with the source description of “Lewis and Clark Memorial Bridge” as bridge in United States of America. 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 bridge in United States of America. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated May 27, 2025. The linked authority identifier is Q54933314. Authority coordinates are 43.799, -99.350. None of the 2 selected statements returned an explicit reference. The first chronological checks are 1967 and 1974.
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 “Lewis and Clark Memorial Bridge”, its source revision and the description used here.
- Expand the search: follow Lewis and Clark Memorial Bridge primary sources, Lewis and Clark Memorial Bridge archive and Lewis 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 “Lewis and Clark Memorial Bridge”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Lewis and Clark Memorial Bridge” 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.