Future WEST End: Interchange, US 30/218, Cedar Rapids, Linn County

In 2014, it was finally time to add a line to this page. The long-awaited western extension of IA 100 is now officially under construction and in the programmed plan to be completed around the end of the decade. From Edgewood Road, IA 100 will go west, cross the Cedar River, head southwest, then head nearly due south along 80th Street to the half-interchanges at the west end of the Cedar Rapids bypass, which will be rebuilt. Here are links to an overview PDF and individual files of segments.

WEST End: Partial interchange, Covington Road, Cedar Rapids, Linn County

The IA 100 extension to Covington Road (old IA 94) opened to traffic December 15, 2016 - ahead of schedule. Above, local dignitaries cut the ribbon for the extension at Edgewood Road 12 days earlier.

Old WEST End: Partial interchange, Edgewood Road, Cedar Rapids, Linn County

Facing west on 100

Photo by Jason Hancock

Until 2015, 100 ended at an unfinished half-diamond interchange with Edgewood Road. When the extension was built, the interchange became a SPUI. This sign notes the end of the freeway in half a mile.

Closeup of above signage

Facing west on 100

Photo by Jason Hancock

All traffic for 100 was directed onto what would eventually be the off/on ramps for Edgewood Road. Plans to extend the route repeatedly ran into financial and environmental roadblocks. Right now, the western extension is projected to be finished in 1990 2005 2016 2020 or Real Soon Now (that's a technical term), whichever comes later.

Facing west on 100 offramp

Photo by Jason Hancock

Facing north on Edgewood Road

Photo by Jason Hancock

Notice the 100 shield at the ramp. No changes to the area were made until grading began for the western extension in 2013 and Edgewood traffic endured construction in 2014.

Old WEST End: I-380 exit 24/24A, Cedar Rapids, Linn County

Facing west on 100

Photo by Jason Hancock

East of I-380, at about the point that old IA 150 took a slight turn southwest before going north, modern 100 has an "exit ramp" that drivers must use to get to I-380. Between here and there is a stoplight at Center Point Road (old IA 150 north). This was 100's west end for about a year, from commissioning in August 1984 to extension in 1985.

Facing west on 100

Photo by Jason Hancock

The IA 100 interchange is mixed in with other nearby exits that form a sort of Texas-style frontage road for a distance along I-380 in addition to the volleyball interchange. Compared to the pure volleyball interchange of US 77 at I-29 in Sioux City, this position facing west is equivalent to the first signs you see on the northbound 29 offramp.

Facing south on 380

Photo by Jason Hancock

Facing north on 380

Facing north on 380

Photo by Jason Hancock

Unlike southbound 380, the exit ramps for 100 and Blairs Ferry Road are split up.

Facing north on 380 at the volleyball

The bridge is for 100 "thru traffic" that doesn't have to stop at the stoplights with the I-380 ramps.

Old EAST End: Stoplight, Business US 151/1st Ave., Cedar Rapids, Linn County

Facing east on 100

This was the eastern end of 100 between 1984 (when it was commissioned) and 1996. Before that, it was the south end of 150 before it was rerouted to Vinton. Highway 100 was commissioned August 14, 1984, the same day IA 101 was decommissioned and IA 150 rerouted.

Facing west on 100

Facing north on Business 151

Photo by Jason Hancock

Before 1996, 100 started at the left of this photo. Jason Hancock says that this is the end of unsigned Iowa 922, which is the DOT's secret number for Business 151 through Cedar Rapids. (The segment through Marion is maintained by the city; the city limits change a few hundred feet north of here.)

Facing northeast, but heading north, on Business 151

Facing southwest, but heading south, on Business 151

EAST End: Stoplight (was 4-way stop), US 151/IA 13 and E45, Marion, Linn County

Facing east on 100

Facing east on 100

In 2003, E45 was not marked here.

Facing north on 151/13

Facing north on 151/13

Facing south on 151/13

Facing south on 151/13

Facing west on Secrist Road (secret Linn Co. E45)

This intersection is (as of spring 2007) surrounded by farmland, but there is development one mile north at the north end of Business 151 and creeping southward.

Weeks after the above pictures were taken, a stoplight finally appeared at this intersection.

Facing east on 100

Photo by Jason Hancock

Signs on stoplight arms

Photos by Jason Hancock

Facing north on 151

Photo by Jason Hancock

Notice that this assembly is prepared for a double-left-turn lane, which is going to be a tight squeeze.

Pictures by Jason Hancock: Second, fourth, and 22nd, 12/2/01; fifth and sixth, 5/18/03; seventh-ninth and eleventh, 10/21/05; 28th-31st, 6/17/07

Pictures by me: First and third, 12/3/16; tenth, 7/15/06; 12th and 18th-27th, 3/12/07; 13th, 14th, 16th, and 17th, 7/16/06

Page created 2/24/02; last updated 3/6/17

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