Talk:Interstate 90

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Interstate 90 is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.

This article appeared on Wikipedia's Main Page as Today's featured article on September 12, 2023.

Article milestones
Date	Process	Result
January 29, 2005	Featured article candidate	Not promoted
January 31, 2007	Peer review	Reviewed
August 28, 2016	Good article nominee	Not listed
December 24, 2020	Good article nominee	Not listed
December 14, 2021	Good article nominee	Listed
April 29, 2022	Featured article candidate	Promoted

A fact from this article appeared on Wikipedia's Main Page in the "Did you know?" column on January 4, 2022.

The text of the entry was: Did you know ... that Interstate 90 is the longest freeway in the United States, at 3,020 miles (4,860 km)?

Current status: Featured article

U.S. Roads: Interstates High‑importance

	U.S. roads portal This article is within the scope of the U.S. Roads WikiProject, an attempt to build a comprehensive and detailed guide to state highways and other major roads in the United States. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion.U.S. RoadsWikipedia:WikiProject U.S. RoadsTemplate:WikiProject U.S. RoadsU.S. road transport
High	This article has been rated as High-importance on the project's importance scale.
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	Interstate Highway System
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	A fact from this article was featured on the Did you know? section of the U.S. Roads Portal in October 2007, April 1, 2009, May 2009, February 2016.
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Wisconsin segment length

It should be very clear that the FHWA has an error in their webpage for the length of the segment of I-90 within Wisconsin. Continuing to ignore this error and no make the appropriate correction is not helpful.

The I-39/I-90 overlap in Wisconsin uses I-90's mileposts and continues its exit number sequence. There is an exit 185 near the border, which would not be possible if I-90 were only 108 miles in length.
- Those mileposts and exit numbers increase in the southbound direction; if they corresponded to I-39, they'd increase in the opposite direction.
- I-90 in the state predates the designation of I-39 by decades, and the exit numbers and mileposts likewise predate I-39 in Wisconsin.
WisDOT's own log gives the full length in their state, which is consistent with the mileposts and exit numbers.
The FHWA length corresponds to the length of I-90 or I-90/I-94 up to the point where I-39 joins in. It is only a reasonable conclusion that for some reason, FHWA has omitted the length of I-39/I-90(/I-94) from the length of I-90 in the state.

For these reasons, I have changed the length of the Wisconsin section in the table and updated the overall total. The WisDOT log has been cited. Should FHWA actually correct their log, we can make any minor corrections based on any variance in computing the length at that time and change the footnotes accordingly. Imzadi 1979 → 00:08, 27 January 2025 (UTC)[reply]