Category Archives: Construction

Mar 11

Detailed plan for new 30 in Tama County released

When the initial announcement was made about this month’s meeting regarding expansion of US 30 between Tama and IA 21, I noted the text left an opening for leaving existing 30 behind as a frontage road. The map (PDF) does … Continue reading

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Mar 10

Woodbury County US 20 detour starts Monday

The calendar catches up with the weather in shifting from “Still Winter” to “Construction” on Monday. US 20 will be closed between Moville and Correctionville until Thanksgiving week. The existing lanes will be destroyed and new lanes built just to … Continue reading

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Feb 29

Meeting about US 30 in Toledo this week

The Iowa DOT will hold a meeting in Toledo on Thursday to discuss the plan to four-lane US 30 in eastern Tama County. It won’t be completed for years, but the first step is acquiring right-of-way. The project statement says … Continue reading

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Feb 27

Top ‘structurally deficient’ bridges on replacement cycle

Getting attention this week was an update to a type of report that gets issued in various forms semi-regularly since the I-35W bridge collapse in Minneapolis in 2007, regarding the condition of bridges nationwide. One-fifth of Iowa’s bridges, over 5000 … Continue reading

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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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