Category Archives: Construction

Feb 08

DOT plans to change cloverleaf at 35/30

March 25, 2010: It turns out I’ve only photographed this exit once because watching for merging traffic takes priority. There are fewer pure cloverleaf interchanges in Iowa than you might think, but two of them – I-80/I-380 and I-35/US 30 … Continue reading

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Feb 03

Smoothing out Swiss Valley Road curve

The point east of Peosta where US 20 angles sharply northeast toward Dubuque has been there since 20 was realigned in Dubuque County in 1959, near where the four-lane road ended at the time. In the decades since, traffic has … Continue reading

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Jan 04

Construction progress reports

From the Gazette: “Highway 100 extension on schedule and budget” From the Sioux City Journal: “Highway 20 widening heads to finish line” Both of these projects are expected to be completed by the end of the decade, and the I-74 … Continue reading

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Dec 09

Forevergreen Road plans out, including six-lane I-380

The plan for construction of an I-380 exit at Forevergreen Road in North Liberty is out. It includes upgrading I-380 to six lanes under Forevergreen but narrowing to two to the north. South of there, I-380 will be six-laned as … Continue reading

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Dec 07

Iowa’s second diverging diamond planned for Ankeny

Last week, shortly after the first diverging diamond interchange in Iowa opened in Dallas County, the Iowa DOT released plans for a second interchange of that style, also in the Des Moines metro area. The DOT has multiple maps and … Continue reading

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Dec 03

Great River Road near Montrose open again

The Keokuk Daily Gate City reports that River Road (County Road X28) south of Montrose reopened about 10 days ago. The road had been closed since July because of a slide, and a temporary fix has been applied.

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Nov 30

Iowa’s first diverging diamond interchange opens Tuesday

The I-80 interchange at Alice’s Road Grand Prairie Parkway between Waukee and West Des Moines is scheduled to open Dec. 1, the Des Moines Register reports. The interchange is a diverging diamond, where traffic temporarily runs on the left side … Continue reading

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Nov 17

Correctionville construction update

The Sioux City Journal reports that construction on US 20 is on track in Woodbury County. Trees have been removed in the Little Sioux River valley to make way for the new bridge that will be built next year. Traffic … Continue reading

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Nov 12

Bedrock impedes Bettendorf I-74 construction

The Quad-City Times has a construction update on I-74, which is a little behind schedule from unexpectedly tough bedrock. Linked at the end of the story is a 6½-minute video from the Iowa DOT from January with a visual flyover … Continue reading

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Oct 23

IA 58 meeting in Cedar Falls Tuesday

A public hearing with a presentation about changing IA 58’s intersection with Viking Road into an interchange will be held Tuesday, the Waterloo-Cedar Falls Courier reports. The roadbed for current 58 will be lowered and a very tight SPUI constructed. … Continue reading

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