Coral Ridge Avenue Improvements

Coral Ridge Avenue Improvements: Oakdale Boulevard to Forevergreen Road

Coral Ridge Avenue from Oakdale Boulevard to Forevergreen Road underwent total reconstruction in 2018 and will continue in spring 2019. This is the final section of Coral Ridge Avenue that needs to be improved.
  1. Highlights
  2. Cost
  3. Timeline


After work is complete, this widened one mile stretch of Coral Ridge Avenue will feature:
  • Four lanes (widened from the current two lanes), with a raised center median and dedicated turn lanes at all intersections
  • Upgraded traffic signals at both Oakdale Boulevard and Forevergreen Road
  • New traffic signals at both University Parkway and Wheaton Road
  • New pedestrian tunnel just north of Oakdale Boulevard
  • New 10' trail along the west side of Coral Ridge Avenue
  • New storm sewer system and stormwater quality enhancements
  • Roadway lighting and landscaping

Side street closures

Coral Ridge Ave access closed at University Pkwy and at Wheaton Rd.
Coral Ridge Ave Improvements

Contact Us

  1. Dan Holderness

    City Engineer

    Scott Larson

    Assistant City Engineer

    1512 7th St.
    P.O. Box 5127
    Coralville, IA  52241

    Ph: 319.248.1720
    Fx: 319.248.1894

    Staff Directory

At a Glance

Final improvements to be completed in spring/summer 2019:

  • The initial focus is to complete final street, median, and sidewalk construction on the east half of Coral Ridge Avenue between University Parkway and Forevergreen Road
  • Roadway lighting
  • Remaining intersection paving at University Parkway, Wheaton Road, and Forevergreen Road
  • Streetscaping at all intersections
  • Sidewalk and trail connections, including through the new pedestrian underpass north of Oakdale Boulevard
  • Stormwater bio-retention cells along both sides of Coral Ridge Avenue to help remove pollutants from street runoff
  • Final landscaping, including street trees
Summer 2019 traffic impact:
  • Expect lane closures, with efforts to minimize traffic impact
  • Traffic is restricted to one lane in each direction through most of the project corridor until the project nears completion.
  • Northbound Coral Ridge Avenue drivers approaching Forevergreen Road have a combined thru/left turn lane and a dedicated right turn lane. However, the north-south movements through the Forevergreen Road intersection run separately until dedicated left turn lanes are available.
Side street closures (see image)
  • The east and west legs of Coral Ridge Avenue & University Parkway (including IMCC’s northerly entrance) are closed.  
  • Wheaton Road is closed between Coral Ridge Avenue and Crosspark Road.


Current & Upcoming Work*

Work June 14-20 included:
  • Completed northbound and southbound Coral Ridge Avenue left turn lanes at Wheaton Road.
  • Completed installation of field fence and sprayed hydromulch on the back slope along west side of Coral Ridge Avenue north of University Parkway. 
  • Continued working on crosswalks within the southbound lanes of Coral Ridge Avenue.
  • Continued working on the center median from Wheaton Road to Forevergreen Road.
  • Completed light fixture installation within pedestrian underpass tunnel; electrical work remains. 
  • Placed compacted subbase material within the pedestrian underpass tunnel ahead of the rain forecast to keep the trail grade solid and hopefully allow paving to begin the week of June 24.  
  • Placed compacted subbase material on the corner landings at University Parkway and Wheaton Road ahead of the rain forecast; paved portions of three landings at University Parkway.  
Progress expected June 20-27, weather permitting:
  • Continue working on crosswalks and corner landings at University Parkway and Wheaton Road.
  • Continue center median brick pavers and landscaping north of University Parkway.
  • Continue with final grading and temporary seeding where possible.
  • Continue electrical work within the pedestrian tunnel.
  • Begin trail paving near pedestrian underpass tunnel?
Looking ahead
  • The Coral Ridge Avenue project has a substantial completion date of June 28, 2019. 
  • Construction on the stormwater bio-retention cells will continue through July.  
  • Final landscaping and seeding will occur after August 10 (fall seeding period is August 10 to September 30).  
*Updated June 20, 2019

Merging Traffic

How to Merge Efficiently on Coral Ridge Avenue

When traffic is slow and heavy, merging too early can create traffic backups. During peak traffic times on Coral Ridge Avenue, using a "zipper merge" can keep traffic moving and reduce traffic backups.

A "zipper merge" is when drivers use both lanes of traffic until they reach the defined merge area, and then alternate in "zipper" style into the open lane. This maximizes road space, reduces congestion, and allows both lanes to move at similar speeds.

How to "Zipper Merge"
  1. Watch for signs giving drivers notice that there is a merge ahead
  2. Stay in your lane up to the point of merge
  3. Take turns with drivers to safely ease into the remaining lane
  4. Always merge when it is safe

Merging FAQs

When is it best to use the zipper merge?

When traffic is congested and traveling at slower speeds, it is best to remain in your lane until the point where traffic can take turns merging, which is indicated by a "BEGIN MERGE" sign.

When is it best to merge early?
When traffic conditions are light and vehicles are traveling at highway speeds, it is best to merge as soon as safely possible.

Zipper Merge Resources

Take Turns sign

Pre-Project Planning

Duct Banks

In anticipation of the 
project, underground duct banks were proactively constructed in 2017. These duct banks provided places for the private utilities companies to relocate their overhead and underground facilities to be out of the way before the 2018 improvement projects. The duct banks should minimize delays caused by private utility relocations, which can be common during street projects.

Stay Informed

  1. Northbound Coral Ridge Avenue Traffic to Shift to Correct Side of Center Median

    Traffic remains single lane northbound and southbound, but on the correct side of the center median, beginning June 4 Read on...
  2. Iowa River Trail Closure

    Trail between the Iowa River Power Restaurant parking lot & E. 7th Street/Quarry Road intersection closed until further notice Read on...
  1. Construction to Resume on Coral Ridge Avenue

    Construction on Coral Ridge Ave. between Oakdale Blvd. and Forevergreen Rd. will start again on April 2 Read on...
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