What type of closures or restrictions
should I expect during construction?
During construction three lanes in each direction will be maintained on the bridge.
This will be done utilizing a "Contraflow" traffic pattern. Motorists heading south on I-77 will have two lanes continue on the southbound side of I-77 while the third lane will cross over onto the northbound side of I-77.
Portable concrete barriers will be used to separate north and southbound traffic while one or more lanes are shifted onto the opposite side of the highway.
This configuration allows the contractor to have full access to a safe work zone during all phases of construction.
The image on the right details how traffic will be maintained during Phase 1A. As phases change during the project the image on the right will be updated to reflect the most current traffic configurations.
From early-spring to late-fall, during active construction, the I-77 southbound exit ramp to I-480 westbound and the I-480 eastbound exit ramp to I-77 northbound will be closed.
I-77 southbound motorists will be detoured via I-490 westbound to SR 176 southbound to I-480 westbound.
I-480 eastbound motorists will be detoured via SR 176 northbound to I-490 eastbound to I-77.
Also, the I-480 westbound ramp to I-77 northbound will be reduced to one lane to help improve traffic flow on I-77. The right lane will be closed on this ramp from early-spring to late-fall. Motorists will be encouraged to use SR 176 northbound to I-490 eastbound to I-77 to avoid any congestion on this ramp.
The I-77 southbound ramp to I-480 eastbound will also be reduced to one lane due to the contraflow lane configuration.
Check out the videos below to see how easy it is to detour around these closures.
Will the speed limit be reduced?
Yes, during construction the speed limit in the work zone will be 50 mph and this will be strictly enforced.
What is the timeline of this project?
- In 2014, crews will replace the southbound bridge deck using three traffic phases.
- In 2015, crews will replace the northbound bridge deck using three traffic phases.
Will this work take place during the winter months?
No, from early-November through mid-March all lanes and ramps will be open and in their normal configuration.
What alternate routes can I use to avoid this project?
- I-480 east and westbound motorists are encouraged to use SR 176 northbound to I-490 eastbound to I-77.
- I-77 northbound motorists can use I-480 westbound to SR 176 northbound to I-490 eastbound to I-77.
- I-77 southbound motorists can use I-490 westbound to SR 176 southbound to I-480.
How can I get updates about the project?
Sign up today here to receive email updates. Select the I-77 and I-480 updates list to receive all up-to-date information straight to your inbox.