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 continued in 2019. This is the final section of Coral Ridge Avenue to be improved.
This widened one mile stretch of Coral Ridge Avenue features:
- 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
- Bid in January 2018
- Low bid: $8,451,528.03 (Peterson Contractors Inc. of Reinbeck, Iowa)
- Funding: The Iowa Department of Transportation is contributing $1.7 million, with the balance coming from local funds and assessments. The City of North Liberty is also contributing funds since a portion of the project is located within North Liberty.
- Start: March 2018
- Winter shutdown: Late 2018-late March 2019
- Estimated completion: All lanes, intersections, and sidewalks open before August 23, 2019, weather permitting
Current & Upcoming Work*
Progress September 6-13, 2019, included:
- Completed relocation of the traffic signal pole on the southeast corner of University Parkway.
- Completed median nose repairs on east and south legs of Coral Ridge Avenue & Oakdale Boulevard intersection.
- Continued planting trees, included replacing some from last year that didn’t survive.
- Continued the corner pedestrian landings on the southeast corner at University Parkway, and the southeast and southwest corners at Forevergreen Road. The concrete for the three corners should be poured September 14.
- Complete corner pedestrian landings on the west leg of the Wheaton Road intersection.
- Continue/complete corner pedestrian landings at the Forevergreen Road intersection.
- Finish remaining pavement marking symbols.
- Final landscaping will continue through September (fall seeding period is August 10 to September 30).
- A final determination on what sections of the west side trail need to be replaced has been delayed until the full contractor team is available for a meeting the week of September 16.
- A short section of curb and gutter on northbound Coral Ridge Avenue over the new pedestrian tunnel needs to be replaced due to ponding water after rain events. That work will require a lane closure, but the exact time frame for the work has not been set.
At a Glance
Final improvements to be completed in spring/summer 2019:
- 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.
- The east leg of Coral Ridge Avenue & University Parkway is closed. Traffic leaving the Iowa Medical and Classification Center will need to turn north or south onto Coral Ridge Avenue.
Maps & Documents
- Project map and construction staging plan (PDF)
- Coral Ridge Avenue project schedule (PDF) - updated November 9, 2018
- "Construction That Is Worth the Wait" (March 28, 2019)
- "Coral Ridge Avenue Update: August 21"
- "Coral Ridge Avenue Update: July 31"
- "Coral Ridge Avenue Update: July 10"
- "Coral Ridge Avenue Update: June 25"
- "Coral Ridge Avenue Update: June 5"
- "Coral Ridge Avenue Update: Week of May 14"
- "Coral Ridge Avenue Update: Week of April 30"
- "Coral Ridge Avenue Update: Week of April 16"
- "Coral Ridge Avenue Update: Week of April 9"
- "Coral Ridge Avenue Update: Week of April 2"
- "Coral Ridge Avenue Update: Week of March 26"
- "Coral Ridge Avenue Road Reconstruction: The Basics" (March 20, 2018)
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"
- Watch for signs giving drivers notice that there is a merge ahead
- Stay in your lane up to the point of merge
- Take turns with drivers to safely ease into the remaining lane
- Always merge when it is safe
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
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.
- Sign up for e-news alerts ("Construction and Traffic Updates" category)
- Like City of Coralville, Iowa on Facebook
- Follow the City of Coralville, Iowa on Twitter
- Join Nextdoor (a private social network for Coralville neighborhoods)
- Pay attention to construction message boards along 1st Avenue during construction
- Check local news for media releases
- Attend weekly meetings April-June 2019 with the City and the contractors, and open to the public:
- Thursdays from 10:00-11:00 am
- Coralville City Hall (1512 7th St.)
- call 319.248.1720 for more information