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Columbus Crossroads
I-70/I-71 South Innerbelt - June 2004

ODOT Unveils Analysis of New Concepts


The Ohio Department of Transportation has completed its analysis of eight concepts for the Interstate 70/71 downtown “split,” which may hold the key to reducing accidents and congestion on the 1.5 mile stretch of overlapping highway. The concepts were identified during a series of public and community meetings held earlier this year.

The concepts range from minimal to major changes, with some proposing to gut and rebuild the entire system and others advocating leaving ramps and other features unchanged. Over the past several months, ODOT has analyzed the concepts based on safety, efficiency, environmental and community issues to see if they work.

ODOT will be sharing the results with the public throughout June and July. By the end of July, the department plans to narrow the number of concepts to two or three, which will be analyzed in greater detail throughout the summer.

The following is a general description of each of the new concepts ODOT analyzed, with various categories of maps and renderings for each alternatives (click here for the legends to use with the graphics):

1) No Build.
or leave the corridor entirely unchanged.

No Build graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


2) One-way Pair, Collector-Distributor Roads (Alternative A)
These one-way CD roads would parallel both sides of the highway and collect traffic from existing downtown areas to distribute onto the highway. ODOT will analyze a variation of the existing CD road concept discussed at public meetings, but with additional ramps to increase connectivity downtown.

One-way Pair, Collector-Distributor Roads graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

3) Tunnel. (Alternative B)
Build express lanes for through traffic by tunneling under the existing highway.

Tunnel graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

4) Freeway Collector-Distributor Road. (Alternative C)
This concept would place the CD road on the same level as the existing freeway with a ramp system similar to what exists today.

Freeway Collector-Distributor Road graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

5) Urbanized Freeway System. (Alternative D)
This concept would untangle portions of the I-70/71 overlap, improve existing ramps, but leave the highway and ramp system largely unchanged. The most unsafe ramps could be consolidated or closed.

Urbanized Freeway System graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

6) Arterial Boulevard. (Alternative E) 
This concept would upgrade SR 104 and reroute I-70 through traffic out of downtown. Portions of existing I-70 in downtown Columbus would be replaced with a city boulevard. 

Arterial Boulevard graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

 

7) Two-way, Collector-Distributor Road Decked over the Freeway. (Alternative F)
Move the CD roads away from the neighborhoods and place them over the highway.

Two-way, Collector-Distributor Road Decked over the Freeway graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map


 

 

8) Two-way, Collector-Distributor Road Using Local Street System. (Alternative G)
This concept would create a two-way, CD road and move it into the downtown along Fulton and Lester.

Two-way, Collector-Distributor Road Using Local Street System graphics:
General Information Map | 3D Diagram | Unsafe Roadway Features Map
Weaving and Lane Shift Map | Percent Change In Average Daily Traffic (ADT) Map 


 

Emergency Response Charts Travel Time Savings (AM Peak Hour) 1.06 Mb PDF file


 

Neighborhood Charts Travel Time Savings (AM Peak Hour) 1.01 Mb PDF file


 

Freeway Enhancement Examples photos of aesthetic design elements from other projects


 

Cap Capable Areas  Areas where caps over the roadways are feasible for each alternative
2 files:
For No Build, Alt. A, Alt. B, and Alt C 1.25 Mb PDF file   | and For Alt. D, Alt. E, Alt. F and Alt. G 1.37 Mb PDF file