(July 1, 1920-September 4, 1941)

IA 11 endpoint history
FROM TO NORTH SOUTH
7/1/20 2/18/24 Minnesota state line (US 52) Mount Sterling OR Missouri line
2/18/24 3/18/25 Missouri state line (Old IA 15)
3/18/25 10/16/26 Calmar (IA 24/150 at US 52)
10/16/26 193X
US 161 (College Dr at 1st Ave)
193X July 1940
US 30 (1st Ave at 10th St SE)
July 1940 9/4/41 US 218 (K St at 16th Ave SW)

NORTH End (1): Minnesota state line, now near US 52, Winneshiek County IA/Fillmore County MN

Facing north on 11 (5/19/04)

In 1924, IA 20 replaced IA 11 north of Decorah, in all likelihood to match MN 20. The 1922 Minnesota state map from the Minnesota Digital Library is the oldest online that includes highway numbers. Before 1924, the road came to this point, jogged east, then turned north. That was changed in 1928 to curve a bit east to the state line; in 1974 it was re-realigned to go straight. Unfortunately, aerial photos cut off right at the line, so I can't specify if Prosper was bypassed before the road was straightened at the line.

NORTH End (2): IA 20, now IA 150/IA 24 at US 52, Calmar, Winneshiek County

Facing north on 11 (7/14/02)

Photo by Jason Hancock

Many more pictures of this intersection can be seen on the Calmar page.

IA 20, whose northernmost part originally went northwest from Decorah and then north-northeast to the state line, was changed in 1924 presumably to get the result of connecting to MN 20. MN/IA 20 from Cannon Falls to Dubuque became US 53 (unless it didn't), US 55, then US 52; IA 20 from Dubuque to Keokuk became US 61.

This is the present north end of IA 150, which replaced IA 11 in what was possibly a misguided attempt to extend US 150. (US 150 itself, which runs from the Illinois side of the Quad Cities to central Kentucky, is a weird highway, a diagonal route greatly lengthened after a 1934 extension.)

SOUTH End (3): US 161, now College Dr. at 1st Ave., Cedar Rapids, Linn County

This intersection would be IA 11's south end after implementation of the 1926 series. It had two other endpoints in Cedar Rapids over the next 15 years. College Drive is 13th Street as it goes through Coe College and then has a non-intersecting intersection (it's weird) with Center Point Road.

Cedar Rapids is a commercial pivot of a territory whose population numbers over one million and a quarter people within a radius of 100 miles; a young city already strong, not only in its numbers, but in its citizenship; a city advantageously situated in the garden spot of the Middle West — the envy of her sister cities as a distributing center; a city which has already won distinction for commercial and industrial enterprise...
Huebinger's Map and Guide for Iowa Official Transcontinental Route (1912)
[It goes on from there, and on, and on. Hyperbole existed long before the field of public relations. — Ed.]

SOUTH End (2): Missouri state line, now V56 at state line, Van Buren County IA/Scotland County MO

Facing south on 11 (6/11/07)

In early 1924, after months of planning, the IHC moved the southernmost part of IA 11 to connect with the Missouri route coming up from the south. The original intention was for Mount Sterling to remain in the state system, with a new "stub route" IA 113. However, this never got put into effect. Less than four years after the primary system's creation, Mount Sterling became the first Iowa community to permanently lose a connection. It would disincorporate about 90 years later.

Closeup of first sign (6/11/07)

The "Memphis Road" south from Milton to the county seat of Memphis MO has carried the numbers 11, 23, and 15. This was the "south" IA 15 created in the Great Renumbering of 1969.

SOUTH End (1): Mount Sterling OR Missouri state line, Van Buren County IA/Clark County MO

Probably not facing south on 11 (10/3/15)

Mount Sterling is close enough to the state line that it's not possible to tell if IA 11 ended there or here. The only hint is that the 1914 county map says the mile south of Mount Sterling was added in 1926, making the end north of this picture. The Waubonsie Trail went from Cantril to Mount Sterling on gravel J56, then went into Missouri on what's now Route V, before turning north to Farmington on MO/IA 81. (Had the Sullivan Line been drawn straight, it all would have been in Iowa.) That wouldn't have worked for a highway across the southern tier of Iowa, and thus IA 3 ran to the north.

The road curves to follow the Clark/Schuyler county line in Missouri.

Page created 5/10/20; last updated 4/25/22

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